DOCSLIB.ORG

UNIVERSITY of BIRMINGHAM School of Physics and Astronomy Lectureship in Stellar Astrophysics

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
UNIVERSITY of BIRMINGHAM School of Physics and Astronomy Lectureship in Stellar Astrophysics UNIVERSITY OF BIRMINGHAM School of Physics and Astronomy Lectureship in Stellar Astrophysics Astrophysics and Space Research GroupJob references: 52928 Closing date: 8th January 2016 Post Title and Post Number Lectureship in Stellar Astrophysics Organisation Advertising School of Physics and Astronomy Description Post Number 52928 Full Time/Part Time Full Time Duration of post Open Post is open to: Internal and External Candidates Grade Grade 8 Salary Starting salary is normally in the range £38,511 to £45,954. With potential progression once in post to £51,702 a year Terms and Conditions Academic Teaching Staff Closing Date Friday 8th January 2016 Job Summary The School of Physics and Astronomy at the University of Birmingham invites applications for a tenured faculty position in the Solar and Stellar Astrophysics Group at the Lectureship level, or exceptionally at a higher level. The research activities of the group are centered on studies of stars, including the Sun, the characterization of exoplanet systems, and stellar population studies, using in particular the techniques of helio- and asteroseismology. Expertise in the group spans the domains of observation and instrumentation through to theory and modelling. Members of the group have leading positions in major international projects, such as Kepler, K2, PLATO and TESS. The group runs its own global network of helioseismic observatories, the Birmingham Solar-Oscillations Network (BiSON). It is also one of the nodes of the Stellar Astrophysics Centre (SAC), an international centre of excellence in stellar and exoplanet studies. The appointment is expected to contribute to and expand existing research activities. Applications are invited in the areas of stellar and solar studies, with an emphasis on expertise in the domain of data- analysis. Experience with instrumentation may also be beneficial. The successful applicant will also contribute to the School’s undergraduate and postgraduate teaching. 1 Solar and Stellar Astrophysics at Birmingham The Solar and Stellar Physics Group is part of the School of Physics and Astronomy at the University of Birmingham. The Group is one of the world-leading research groups in asteroseismology and helioseismology, with expertise that spans the breadth of observation and data collection, data analysis, and modelling and interpretation. The group currently has three permanent academics, Professor William Chaplin (Head of Group), Professor Yvonne Elsworth, and Dr Andrea Miglio, as well as five postdoctoral researchers, one senior technical member of staff, seven graduate students, a technician, and a secretary. The research focus is on the study of the Sun, cool main-sequence, sub-giant and red-giant stars. This includes an interest in the characterisation of newly discovered exoplanet systems and in using asteroseismology as a tool for Galactic stellar population studies. Members of the Group have leading positions in Kepler, K2, CoRoT, TESS and PLATO. On the solar side, the group runs its own global network of helioseismic observatories, the Birmingham Solar-Oscillations Network (BiSON), and has a particular interest in studies of the solar cycle and the current unusual (by modern standards) low levels of activity. The group has a diverse funding stream, and holds grants from the UK Science and Technology Facilities Council, and the EU. The group is also part of the Stellar Astrophysics Centre (SAC), an international Centre of Excellence funded by the Danish National Research Foundation, the focus being the study of stars and exoplanetary systems using cutting-edge data from space missions, such as Kepler and CoRoT, and ground-based telescopes. The Birmingham group is one of seven international nodes. In addition to those forged through SAC, the group has extensive and wide-ranging international collaborations, through its leading involvement in major international projects. Role Purpose To enhance the strength of one of the research areas referred to above by conducting world-class research in the area. To create and disseminate knowledge through initiating and conducting original research, through publication and through developing and delivering undergraduate and postgraduate programmes. To contribute to the research group and School through management and leadership. Main Responsibilities Research To plan and carry out research, using appropriate methodology and techniques: Pursue personal research including developing research ideas and winning support, including financial support. Plan, publish and/or execute high quality research Project manage research activities, and supervise other research staff Present findings in high quality publications and conference proceedings Develop novel methodologies and techniques appropriate to the type of research being pursued Supervise and examine PhD students, both within the institution and externally Provide expert advice to staff and students within the discipline Apply knowledge in a way which develops new intellectual understanding 2 Learning and Teaching To use a variety of methods in teaching and advising individuals and groups of undergraduates and postgraduates: Teach and examine courses at a range of levels Plan and review own teaching approaches and act as a mentor to encourage others to do the same Develop programme proposals and make substantial contributions to the design of teaching programmes more widely in the School Undertake and develop the full range of responsibilities in relation to supervision, marking and examining Use appropriate approaches to learning and teaching Disseminate appropriate practices through suitable media Develop and advise others on learning and teaching tasks and methods Devise and supervise projects, student dissertations and practical work Management/Administration To contribute to the research group and School administration or have a high level of responsibility for others: Contribute to the administration and management of research and teaching across the research group and School Advise on personal development of colleagues and students Contribute to widening participation, schools outreach, and public understanding of the discipline. Scope of the Role Contribute to the whole range of research, teaching and administration Initiate, conduct and disseminate world-class research in the subject area Contribute to the development of research strategies Publish results of own research Supervise PhD students Teach and assess at undergraduate and postgraduate level through lectures, seminars and personal supervision Plan and review own teaching and development programmes Develop and advise others Contribute to the administration and management of research and teaching across the Department/School Contribute to widening participation, schools outreach, and public understanding of the discipline. Skills and Experience PhD plus significant postdoctoral experience in the relevant areas of physics/astronomy Strong and growing research profile in one of the areas: solar, stellar and exoplanet studies High level analytical capability Ability to communicate complex information clearly Interest in, and experience of, teaching Proven ability to devise, advise on and manage learning/ research Ability to assess resource requirements and use resources effectively Skills in managing, motivating and mentoring others successfully at all levels 3 Research Experience and achievement reflected in an international reputation Extensive experience and demonstrated success in planning, undertaking and project managing research to deliver high quality results Extensive experience of applying and/or developing and devising successful models, techniques and methods Teaching Ability to design, deliver, assess and revise teaching programmes Some experience in developing appropriate approaches to learning and teaching, and advising colleagues Management Administration Ability to contribute to School and research group management processes Ability to assess and organise resources effectively Understanding of and ability to contribute to broader management/administration processes Planning and Organising Plan for and set teaching programme objectives over a number of years Plan and manage own teaching courses at a range of levels (including design, delivery, assessment) as agreed with the Head of School Plan high quality research Manage research activities and supervise other research staff Organise meetings, conferences, symposia Contribute to the administration and management of research and teaching across the School Decision Making Develop learning and teaching approaches, including approach to mentoring Develop programme proposals and decide what contributions to make to the design of teaching programmes Develop research ideas Decide how to develop and undertake the research Decide where and when to present research findings and what publications and conferences to target for this purpose (with guidance, if required) Contribute to deciding what information to include in a bid for research funding and how to present the bid to maximise the likelihood of securing the funding Advise, supervise and examine PhD students Contribute to management of research group Internal/External Relationships Participate in and develop external networks Provide expert advice to staff and students within the discipline Contribute to recruitment of students Liaise with research staff and support staff on research-related matters
Load more

Recommended publications
  • Winter 2015 Greetings in May the Royal Society Bestowed Fellowship on Professor Yvonne Elsworth For
    Winter 2015 Greetings In May the Royal Society bestowed Fellowship on Professor Yvonne Elsworth for her, “pioneering work in establishing and maintaining an important scientific investigation into the internal structure of the Sun using helioseismic data from the autonomous Birmingham network of observatories complemented by extant data from modes of intermediate degree has permitted an unprecedented investigation into the inner core of the Sun where the nuclear reactions are taking place.” This is well-deserved recognition both for Yvonne and the entire helioseismology group. They are now applying the technique that they pioneered to understanding the structure of stars around which Birmingham, as part of the Kepler mission, is now discovering new planets. Professor Yvonne Elsworth FRS, presenting one of our Physics Role Model seminars. These occur once a term, and are a personal reflection of people’s career paths (this was the first academic career to be showcased); what they are doing; and advice for their younger selves. Please contact us if you would be interested in giving one – we aim to present the diversity of careers possible with a Physics degree. The School and Particle Physics group also celebrated the retirement of Dr John Wilson. John joined the University of Birmingham in 1973 as a Research Fellow, becoming a Lecturer in 1982. He contributed to the work of the group at CERN, particularly the UA1 and Opal experiments, the former being linked to the discovery of the W+/- and Z0 particles – mediators of the weak interaction. John was famed for his contribution to instrumentation and most latterly his spark chamber, which fantastically illustrated the tracks of cosmic rays to a whole generation of School students.
    [Show full text]
  • Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite
    The Astrophysical Journal Letters, 889:L34 (8pp), 2020 February 1 https://doi.org/10.3847/2041-8213/ab6443 © 2020. The American Astronomical Society. All rights reserved. Detection and Characterization of Oscillating Red Giants: First Results from the TESS Satellite Víctor Silva Aguirre1 , Dennis Stello1,2,3 , Amalie Stokholm1 , Jakob R. Mosumgaard1 , Warrick H. Ball1,4 , Sarbani Basu5 , Diego Bossini6 , Lisa Bugnet7,8 , Derek Buzasi9 , Tiago L. Campante6,10 , Lindsey Carboneau9 , William J. Chaplin1,4 , Enrico Corsaro11 , Guy R. Davies1,4 , Yvonne Elsworth1,4, Rafael A. García7,8 , Patrick Gaulme12,13 , Oliver J. Hall1,4 , Rasmus Handberg1 , Marc Hon2 , Thomas Kallinger14 , Liu Kang15 , Mikkel N. Lund1 , Savita Mathur16,17 , Alexey Mints18 , Benoit Mosser19 , Zeynep Çelik Orhan20 , Thaíse S. Rodrigues21 , Mathieu Vrard6,22, Mutlu Yıldız20 , Joel C. Zinn2,22,23 , Sibel Örtel20 , Paul G. Beck16,17,24 , Keaton J. Bell25,62 , Zhao Guo26 , Chen Jiang27 , James S. Kuszlewicz12 , Charles A. Kuehn28, Tanda Li1,3,4, Mia S. Lundkvist1, Marc Pinsonneault22 , Jamie Tayar29,63 , Margarida S. Cunha4,6 , Saskia Hekker1,12 , Daniel Huber29, Andrea Miglio1,4 , Mario J. P. F. G. Monteiro6,10 , Ditte Slumstrup1,30 , Mark L. Winther1, George Angelou31 , Othman Benomar32,33 , Attila Bódi34,35, Bruno L. De Moura36, Sébastien Deheuvels37, Aliz Derekas34,38,39 , Maria Pia Di Mauro40 , Marc-Antoine Dupret41, Antonio Jiménez16,17, Yveline Lebreton19,42 , Jaymie Matthews43 , Nicolas Nardetto44 , Jose D. do Nascimento, Jr.45,46 , Filipe Pereira6,10 , Luisa F. Rodríguez Díaz1 , Aldo M. Serenelli47,48, Emanuele Spitoni1 , Edita Stonkutė49, Juan Carlos Suárez50,51, Robert Szabó34,35, Vincent Van Eylen52 , Rita Ventura11 , Kuldeep Verma1 , Achim Weiss31 , Tao Wu53,54,55 , Thomas Barclay56,57 , Jørgen Christensen-Dalsgaard1 , Jon M.
    [Show full text]
  • Arxiv:2012.04051V1 [Astro-Ph.SR] 7 Dec 2020
    Draft version December 9, 2020 Typeset using LATEX twocolumn style in AASTeX63 THE K2 GALACTIC ARCHAEOLOGY PROGRAM DATA RELEASE 2: ASTEROSEISMIC RESULTS FROM CAMPAIGNS 4, 6, & 7 Joel C. Zinn,1, 2, 3 Dennis Stello,2, 4, 5, 6 Yvonne Elsworth,7, 5 Rafael A. Garc´ıa,8 Thomas Kallinger,9 Savita Mathur,10, 11, 12 Beno^ıt Mosser,13 Lisa Bugnet,14, 8 Caitlin Jones,7 Marc Hon,15 Sanjib Sharma,4, 6 Ralph Schonrich,¨ 16 Jack T. Warfield,17, 18 Rodrigo Luger,19, 20 Marc H. Pinsonneault,17 Jennifer A. Johnson,17 Daniel Huber,21 Victor Silva Aguirre,5 William J. Chaplin,7, 5 Guy R. Davies,7, 5 and Andrea Miglio5, 7 1Department of Astrophysics, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024, USA 2School of Physics, University of New South Wales, Barker Street, Sydney, NSW 2052, Australia 3Department of Astronomy, The Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA 4Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006, Australia 5Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark 6Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D), Australia 7School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK 8AIM, CEA, CNRS, Universit´eParis-Saclay, Universit´eParis Diderot, Sorbonne Paris Cit´e, F-91191 Gif-sur-Yvette, France 9Institute of Astrophysics, University of Vienna, Turkenschanzstrasse¨ 17, Vienna 1180, Austria 10Space Science Institute, 4750 Walnut Street Suite #205, Boulder, CO 80301, USA 11Instituto de Astrof´ısica de Canarias, La Laguna, Tenerife, Spain 12Dpto.
    [Show full text]
  • PPAN Presentation to IOP Town Meeting
    PPAN Presentation to IOP town meeting Jordan Nash What is PPAN? Particle Physics, Astronomy, Nuclear Physics Science Committee The committee provides advice to Science Board and the executive on all aspects of STFC's particle physics, astronomy, space and planetary science and nuclear physics programmes We meet about 6-8 times a year Our business includes Recommendations on Statements of Interest, Project Proposals, Strategic Issues, Grants, programmatic review Interact with Five PPAN Area Advisory Panels Grants Panels Science Board PPAN Membership Chairs Professor Jordan Nash (Chair) – Imperial College Professor Sheila Rowan (Deputy Chair) – Glasgow Members Professor Dave Barnes – Aberystwyth Professor Peter Butler – Liverpool Professor Yvonne Elsworth – Birmingham Professor Alan Heavens – Edinburgh Professor George Lafferty – Manchester Professor Tom Millar – QUB Professor Dan Tov e y - Sheffield Professor Bob Warwick – Leicester Dr. Alfons Weber – RAL/Oxford Advisory Panels 5 panels reporting to PPAN Particle Physics Nuclear Physics Near Universe Far Universe Particle Astrophysics Remit of the Advisory Panels Provide Horizon scanning input for long term strategy planning Provide input on CSR/Programmatic review priorities Contact point for communication with the community What has happened in the last year … At last year’s town meeting we had just been through a programmatic review The programme was left looking decidedly narrow Then there was an election The spending review cast a large uncertain
    [Show full text]
  • Smutty Alchemy
    University of Calgary PRISM: University of Calgary's Digital Repository Graduate Studies The Vault: Electronic Theses and Dissertations 2021-01-18 Smutty Alchemy Smith, Mallory E. Land Smith, M. E. L. (2021). Smutty Alchemy (Unpublished doctoral thesis). University of Calgary, Calgary, AB. http://hdl.handle.net/1880/113019 doctoral thesis University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Downloaded from PRISM: https://prism.ucalgary.ca UNIVERSITY OF CALGARY Smutty Alchemy by Mallory E. Land Smith A THESIS SUBMITTED TO THE FACULTY OF GRADUATE STUDIES IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY GRADUATE PROGRAM IN ENGLISH CALGARY, ALBERTA JANUARY, 2021 © Mallory E. Land Smith 2021 MELS ii Abstract Sina Queyras, in the essay “Lyric Conceptualism: A Manifesto in Progress,” describes the Lyric Conceptualist as a poet capable of recognizing the effects of disparate movements and employing a variety of lyric, conceptual, and language poetry techniques to continue to innovate in poetry without dismissing the work of other schools of poetic thought. Queyras sees the lyric conceptualist as an artistic curator who collects, modifies, selects, synthesizes, and adapts, to create verse that is both conceptual and accessible, using relevant materials and techniques from the past and present. This dissertation responds to Queyras’s idea with a collection of original poems in the lyric conceptualist mode, supported by a critical exegesis of that work.
    [Show full text]
  • Stellar Variance for Asteroseismic Parameter Estimation And
    Stellar Variance for Asteroseismic Parameter Estimation and Inferences on the Evolutionary State and Binary Population of Red Giant Stars. by Caitlin Dawn Jones A thesis submitted to the University of Birmingham for the degree of Doctor of Philosophy School of Physics and Astronomy College of Engineering and Physical Sciences University of Birmingham September 2017 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. Abstract The latest generation of space missions have performed large scale observations of stars and this has been revolutionary in the field of asteroseismology. The ability to characterise thousands of stars has been instrumental in understanding the interiors of stars and the evolution of the Galaxy. This thesis focuses on studying red giant stars, both on an individual basis and as a population, using a robust asteroseismic metric we define based on the bandpass filtered estimate of the stellar variance. Here we present results of testing asteroseismic scaling relations, and the assumptions needed to create realistic simulated power spectra. The resulting synthetic datasets then inform three other investigations. We present the results of an investigation into determining the binary population of Kepler red giant branch stars using our variance metric.
    [Show full text]
  • Asteroseismology of Β Cephei and Be Type Stars
    Asteroseismology of β Cephei and Be type stars by Kym Jeanette Frances Goss A thesis submitted to The University of Birmingham for the degree of Doctor of Philosophy School of Physics and Astronomy The University of Birmingham May 2012 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. Abstract The thesis focuses on the asteroseismology of main sequence B-type stars, particularly β Cephei and Be stars. Photometric observations of these stars were analysed in order to detect stellar oscillations. The photometric data analysed in this thesis were collected using the Solar Mass Ejection Imager (SMEI). The analysis initially focussed on known β Cephei stars, to refine information on previously detected frequencies and detect further oscillations. A survey was then conducted using data from the SMEI instrument to search for further β Cephei stars. The results from this survey were analysed, and individual stars were examined in more detail which may possibly be β Cephei like. Due to the long duration of light curves obtained with the SMEI instrument, stellar oscillations can be analysed for evidence of amplitude and phase change.
    [Show full text]
  • Solar Cycle Variation of Νmax in Helioseismic Data and Its Implications for Asteroseismology
    MNRAS 000, 1–6 (2019) Preprint 3 February 2020 Compiled using MNRAS LATEX style file v3.0 Solar cycle variation of νmax in helioseismic data and its implications for asteroseismology Rachel Howe,1,2⋆ William J. Chaplin,1,2 Sarbani Basu,3 Warrick H. Ball,1,2 Guy R. Davies,1,2 Yvonne Elsworth,1,2 Steven J. Hale,1,2 Andrea Miglio,1,2 Martin Bo Nielsen,1,2,4 and Lucas S. Viani3 1School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom 2Stellar Astrophysics Centre (SAC), Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark 3 Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101, USA 4 Center for Space Science, NYUAD Institute, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates Accepted XXX. Received YYY; in original form ZZZ ABSTRACT The frequency, νmax, at which the envelope of pulsation power peaks for solar-like os- cillators is an important quantity in asteroseismology. We measure νmax for the Sun using 25 years of Sun-as-a-Star Doppler velocity observations with the Birmingham Solar-Oscillations Network (BiSON), by fitting a simple model to binned power spec- tra of the data. We also apply the fit to Sun-as-a-Star Doppler velocity data from GONG and GOLF, and photometry data from VIRGO/SPM on the ESA/NASA SOHO spacecraft. We discover a weak but nevertheless significant positive correlation of the solar νmax with solar activity. The uncovered shift between low and high activity, of ≃ 25 µHz, translates to an uncertainty of 0.8 per cent in radius and 2.4 per cent in mass, based on direct use of asteroseismic scaling relations calibrated to the Sun.
    [Show full text]
  • Arxiv:2002.04377V2 [Astro-Ph.SR] 9 Jun 2020
    Draft version June 11, 2020 Typeset using LATEX preprint style in AASTeX62 The Sixth Data Release of the Radial Velocity Experiment (Rave) { I: Survey Description, Spectra and Radial Velocities Matthias Steinmetz,1 Gal Matijevicˇ,1 Harry Enke,1 Tomaˇz Zwitter,2 Guillaume Guiglion,1 Paul J. McMillan,3 Georges Kordopatis,4 Marica Valentini,1 Cristina Chiappini,1 Luca Casagrande,5 Jennifer Wojno,6 Borja Anguiano,7 Olivier Bienayme´,8 Albert Bijaoui,4 James Binney,9 Donna Burton,10, 11 Paul Cass,10 Patrick de Laverny,4 Kristin Fiegert,10 Kenneth Freeman,5 Jon P. Fulbright,6 Brad K. Gibson,12 Gerard Gilmore,13 Eva K. Grebel,14 Amina Helmi,15 Andrea Kunder,16 Ulisse Munari,17 Julio F. Navarro,18 Quentin Parker,19, 20 Gregory R. Ruchti,6, ∗ Alejandra Recio-Blanco,4 Warren Reid,21, 22 G. M. Seabroke,23 Alessandro Siviero,24 Arnaud Siebert,8 Milorad Stupar,10, 25 Fred Watson,26 Mary E.K. Williams,1 Rosemary F.G. Wyse,6, 27 Friedrich Anders,28, 1 Teresa Antoja,29 Danijela Birko,30 Joss Bland-Hawthorn,31 Diego Bossini,32 Rafael A. Garc´ıa,33, 34 Ismael Carrillo,1 William J. Chaplin,35, 36 Yvonne Elsworth,37, 36 Benoit Famaey,8 Ortwin Gerhard,38 Paula Jofre,39 Andreas Just,14 Savita Mathur,40, 41 Andrea Miglio,37, 36 Ivan Minchev,1 Giacomo Monari,1, 8 Benoit Mosser,42 Andreas Ritter,20 Thaise S. Rodrigues,17 Ralf-Dieter Scholz,1 Sanjib Sharma,31 and Kseniia Sysoliatina14 (The Rave collaboration) 1Leibniz-Institut f¨urAstrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany 2University of Ljubljana, Faculty of Mathematics and Physics, Jadranska 19, SI-1000 Ljubljana, Slovenia 3Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, Box 43, 22100 Lund, Sweden 4Universit´eC^oted'Azur, Observatoire de la C^oted'Azur, CNRS, Laboratoire Lagrange, France 5Research School of Astronomy & Astrophysics, The Australian National University, Canberra, Australia 6The Johns Hopkins University, Department of Physics and Astronomy, 3400 N.
    [Show full text]
  • University of Birmingham Helioseismology
    University of Birmingham Helioseismology - a clear view of the interior Elsworth, Yvonne; Broomhall, Anne-marie; Chaplin, William DOI: 10.1017/S174392131200467X License: None: All rights reserved Document Version Publisher's PDF, also known as Version of record Citation for published version (Harvard): Elsworth, Y, Broomhall, A & Chaplin, W 2011, 'Helioseismology - a clear view of the interior', Proceedings of the International Astronomical Union, vol. 7, no. S286, pp. 77-87. https://doi.org/10.1017/S174392131200467X Link to publication on Research at Birmingham portal Publisher Rights Statement: © Cambridge University Press Eligibility for repository checked July 2014 General rights Unless a licence is specified above, all rights (including copyright and moral rights) in this document are retained by the authors and/or the copyright holders. The express permission of the copyright holder must be obtained for any use of this material other than for purposes permitted by law. •Users may freely distribute the URL that is used to identify this publication. •Users may download and/or print one copy of the publication from the University of Birmingham research portal for the purpose of private study or non-commercial research. •User may use extracts from the document in line with the concept of ‘fair dealing’ under the Copyright, Designs and Patents Act 1988 (?) •Users may not further distribute the material nor use it for the purposes of commercial gain. Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.
    [Show full text]
  • A New Method for the Asteroseismic Determination of the Evolutionary
    Mon. Not. R. Astron. Soc. 000, 000–000 (0000) Printed 11 October 2018 (MN LATEX style file v2.2) A New Method for the Asteroseismic Determination of the Evolutionary State of Red-Giant Stars Yvonne Elsworth1,2,⋆, Saskia Hekker3,2, Sarbani Basu4 & Guy Davies1,2, 1School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK 2Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark 3Max-Planck-Institut f¨ur Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 G¨ottingen, Germany 4Department of Astronomy, Yale University, New Haven, CT 06511, USA submitted 28th September 2016 ABSTRACT Determining the ages of red-giant stars is a key problem in stellar astrophysics. One of the difficulties in this determination is to know the evolutionary state of the individual stars – i.e. have they started to burn Helium in their cores? That is the topic of this paper. Asteroseismic data provide a route to achieving this information. What we present here is an highly autonomous way of determining the evolutionary state from an analysis of the power spectrum of the light curve. The method is fast and efficient and can provide results for a large number of stars. It uses the structure of the dipole- mode oscillations, which have a mixed character in red-giant stars, to determine some measures that are used in the categorisation. It does not require that all the individual components of any given mode be separately characterised. Some 6604 red giant stars have been classified. Of these 3566 are determined to be on the red-giant branch, 2077 are red-clump and 439 are secondary-clump stars.
    [Show full text]
  • History Newsletter CENTER for HISTORY of PHYSICS&NIELS BOHR LIBRARY & ARCHIVES Vol
    History Newsletter CENTER FOR HISTORY OF PHYSICS&NIELS BOHR LIBRARY & ARCHIVES Vol. 42, No. 1 • Summer 2010 Bright Ideas: From Concept to Hardware in the First Lasers Adapted by Dwight E. Neuenschwander, technology and circumstances to catch absorbing a photon whose energy with permission, from Bright Idea: The up with Einstein’s vision. matches the energy difference be- First Lasers, an online exhibit of the tween the two levels. Third, Ludwig Center for History of Physics and Niels Einstein’s 1917 paper depended on Boltzmann’s statistical mechanics gave Bohr Library & Archives at the American four facts that were already well known us an expression for the probability Institute of Physics, hereafter called to physicists, but which Einstein put that an atom resides in a state of a “the Exhibit.”[1] http://www.aip.org/ certain energy when it’s part of history/exhibits/laser/. matter in thermal equilibrium at a given temperature. Fourth, Max Almost everyone living in a Planck’s statistical physics gave us an technological society today owns or expression for the energy distribution uses a laser. Compact disc players, in a gas of photons. Einstein’s 1917 supermarket checkout scanners, laser paper put these four pieces together. printers, and laser pointers are among the applications we encounter daily. Meanwhile, scientists and engineers Some specialized laser applications pushed radio techniques to ever include cauterizing scalpels in surgery, shorter wavelengths. In the 1930s industrial cutters and drills, surveying, some hoped they were on the artificial guide stars for astronomical verge of creating a “death ray” (H.G. observatories, and seismology.
    [Show full text]