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2013 January/February AAS Newsletter 31 January, 2013
2013 January/February AAS Newsletter 31 January, 2013 President's Column David J. Helfand Quest University Canada As I noted in my opening remarks at the 221st meeting of the Society in Long Beach, the state of the AAS — unlike that of the nation — is strong. We ended the year with a small positive balance in the Society's account for the fourth year in a row. Our collection of journals — the highest impact journals in the world in our field — is in even stronger financial shape. Our semiannual conferences exceed expected attendance levels every time we meet, and we are exploiting the Executive Office's outstanding meeting organization resources to support more of our Division Meetings and to launch the Topical Conference Series with three smaller, focused meetings this summer. We will have an expanded public policy presence with the recruitment of Joel Parriott to the fulltime role of Director of Public Policy, and our education and public outreach activities continue to grow in size and impact. This enviable position of strength affords us the opportunity to examine many of the things we do for our members to see if we can do them even better. It also allows us to work on some of the issues in our discipline where we face notable challenges in the research funding trajectory, in facilities access, and with employment/demographic issues. In the months ahead, you will see initiatives in several of these areas. The Employment Committee, chaired by Kelle Cruz, has a new Strategic Plan which promises future benefits for our members. -
The Morphology of the X-Ray Afterglows and of the Jetted Gev Emission in Long Grbs
MNRAS 000,1– ?? (2020) Preprint 17 March 2021 Compiled using MNRAS LATEX style file v3.0 The morphology of the X-ray afterglows and of the jetted GeV emission in long GRBs R. Ruffini,1;2;5;7;14 R. Moradi,1;2;15? J. A. Rueda,1;2;4;8;16 L. Li,1;2;15 N. Sahakyan,1;6 Y.-C. Chen,1;2 Y. Wang,1;2;15 Y. Aimuratov,1;2;9 L. Becerra,1;2;17 C. L. Bianco,1;2;16 C. Cherubini,1;3;11 S. Filippi,1;3;10 M. Karlica,1;2 G. J. Mathews,1;12 M. Muccino,13 G. B. Pisani,1;2 and S. S. Xue1;2 1 ICRANet, Piazza della Repubblica 10, I-65122 Pescara, Italy 2 ICRA, Dipartimento di Fisica, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Roma, Italy 3 ICRA, University Campus Bio-Medico of Rome, Via Alvaro del Portillo 21, I-00128 Rome, Italy 4 ICRANet-Ferrara, Dipartimento di Fisica e Scienze della Terra, Università degli Studi di Ferrara, Via Saragat 1, I–44122 Ferrara, Italy 5 ICRANet-Rio, Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud 150, 22290–180 Rio de Janeiro, Brazil 6 ICRANet-Armenia, Marshall Baghramian Avenue 24a, Yerevan 0019, Republic of Armenia 7 Université de Nice Sophia-Antipolis, Grand Château Parc Valrose, Nice, CEDEX 2, France 8 Dipartimento di Fisica e Scienze della Terra, Università degli Studi di Ferrara, Via Saragat 1, I–44122 Ferrara, Italy 9 Fesenkov Astrophysical Institute, Observatory 23, 050020 Almaty, Kazakhstan 10 Department of Engineering, University Campus Bio-Medico of Rome, Nonlinear Physics and Mathematical Modeling Lab, Via Alvaro del Portillo 21, 00128 Rome, Italy 11 Department of Science and Technology for Humans and the Environment and Nonlinear Physics and Mathematical Modeling Lab, University Campus Bio-Medico of Rome, Via Alvaro del Portillo 21, 00128 Rome, Italy 12 Center for Astrophysics, Department of Physics, University of Notre Dame, Notre Dame, IN, 46556, USA 13 Instituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, I-00044 Frascati, Italy 14 INAF, Viale del Parco Mellini 84, 00136 Rome, Italy 15 INAF – Osservatorio Astronomico d’Abruzzo,Via M. -
What Is Gravity Probe B? a Quest for Experimental Truth the GP-B Flight
What is Gravity Probe B? than Gravity Probe B. It’s just a star, a telescope, and a spinning sphere.” However, it took the exceptional collaboration of Stanford, Gravity Probe B (GP-B) is a NASA physics mission to experimentally MSFC, Lockheed Martin and a host of others more than four decades investigate Einstein’s 1916 general theory of relativity—his theory of gravity. to develop the ultra-precise gyroscopes and the other cutting- GP-B uses four spherical gyroscopes and a telescope, housed in a satellite edge technologies necessary to carry out this “simple” experiment. orbiting 642 km (400 mi) above the Earth, to measure, with unprecedented accuracy, two extraordinary effects predicted by the general theory of rela- The GP-B Flight Mission & Data Analysis tivity: 1) the geodetic effect—the amount by which the Earth warps the local spacetime in which it resides; and 2) the frame-dragging effect—the amount On April 20, 2004 at 9:57:24 AM PDT, a crowd of over 2,000 current and by which the rotating Earth drags its local spacetime around with it. GP-B former GP-B team members and supporters watched and cheered as the tests these two effects by precisely measuring the precession (displacement) GP-B spacecraft lifted off from Vandenberg Air Force Base. That emotionally angles of the spin axes of the four gyros over the course of a year and com- overwhelming day, culminating with the extraordinary live video of paring these experimental results with predictions from Einstein’s theory. the spacecraft separating from the second stage booster meant, as GP-B Program Manager Gaylord Green put it, “that 10,000 things went right.” A Quest for Experimental Truth Once in orbit, the spacecraft first underwent a four-month Initialization The idea of testing general relativity with orbiting gyroscopes was sug- and Orbit Checkout (IOC), in which all systems and instruments were gested independently by two physicists, George Pugh and Leonard Schiff, initialized, tested, and optimized for the data collection to follow. -
Tests of General Relativity - Wikipedia
12/2/2018 Tests of general relativity - Wikipedia Tests of general relativity T ests of general relativity serve to establish observational evidence for the theory of general relativity. The first three tests, proposed by Einstein in 1915, concerned the "anomalous" precession of the perihelion of Mercury, the bending of light in gravitational fields, and the gravitational redshift. The precession of Mercury was already known; experiments showing light bending in line with the predictions of general relativity was found in 1919, with increasing precision measurements done in subsequent tests, and astrophysical measurement of the gravitational redshift was claimed to be measured in 1925, although measurements sensitive enough to actually confirm the theory were not done until 1954. A program of more accurate tests starting in 1959 tested the various predictions of general relativity with a further degree of accuracy in the weak gravitational field limit, severely limiting possible deviations from the theory. In the 197 0s, additional tests began to be made, starting with Irwin Shapiro's measurement of the relativistic time delay in radar signal travel time near the sun. Beginning in 197 4, Hulse, Taylor and others have studied the behaviour of binary pulsars experiencing much stronger gravitational fields than those found in the Solar System. Both in the weak field limit (as in the Solar System) and with the stronger fields present in systems of binary pulsars the predictions of general relativity have been extremely well tested locally. In February 2016, the Advanced LIGO team announced that they had directly detected gravitational waves from a black hole merger.[1] This discovery, along with additional detections announced in June 2016 and June 2017 ,[2] tested general relativity in the very strong field limit, observing to date no deviations from theory. -
Vatican Observatory N E W S L E T T
vatican observatory NEWSLETTER Spring 2012 embracing, encouraging and promoting scientific study VOF Honors Benefactors at Circles of Giving Awards Dinner DID YOU KNOW? German Jesuit Christoph Cla- vius’s viewing of the total solar eclipse of 1560 made him de- cide that astronomy would be his life's work? He went on to write numerous textbooks and Rich Friedrich and Peter Moore was the senior mathematician on Fr. DiUlio and Marianne Augustine of the Pacific Western Foundation the commission for the reform of On February 24, 2012, the Vatican Observatory Foundation honored friends and benefactors who have so the calendar in 1582. The Vatican generously supported the work of the Vatican Observatory over time. Each year as donors reach a certain Observatory Foundation rec- lifetime giving level, they achieve a Circle of Giving designation and are recognized and thanked publicly ognizes his contribution to the by the President and Board of Directors as well as their fellow benefactors and friends. Each Circle of Giv- field by welcoming benefactors of ing is named in honor of one of the exceptional individuals connected with astronomy, the Society of Jesus $10,000 to the Christoph Clavius and the Vatican Observatory. At this year’s dinner four honorees were present to receive awards from Circle of Giving. Foundation President Fr. Albert J. DiUlio, S.J., and Board Chairman, Richard J. Friedrich. They included Christoph Clavius Bill Ahmanson of The Ahmanson Foundation; Marianne Augustine; Peter Moore of the Pacific Western Foundation; and Dan Cracchiolo of The Steele Foundation, whose award was accepted by his sister, Rose Collins. -
Icranet Activities with Brazil
ICRANet activities with Brazil ICRANet-IRAP PhD Fellowships to Brazilian Students pp. 1-17 Part 1 CAPES-ICRANet Program I cycle – 2013-2016 Part 2 p. 19 2. a – IRAP Ph. D. Program pp. 21-27 2. b – Postdoctoral Program in Europe/Asia pp. 29-42 2. c – Postdoctoral Program in Brazil pp. 43-54 2. d – Senior Visitors in Brazil pp. 55-66 2. e – Senior Visitors in Europe/Asia pp. 67-78 0 1. ICRANet-IRAP PhD Fellowships to Brazilian Students index - de Barros, Gustavo 3 - Pereira, Jonas Pedro 7 - Sversut Arsioli, Bruno 11 - Gomes de Oliveira, Fernanda 15 - Maiolino, Tais 17 1 2 de Barros, Gustavo Position: IRAP PhD – Fifth Cycle, 2006-09 Current position: Professor Adjunto Centro Universitário da Zona Oeste – OEZO Publications: -) Patricelli, B.; Bernardini, M. G.; Bianco, C. L.; Caito, L.; de Barros, G.; Izzo, L.; Ruffini, R.; Vereshchagin, G. V.; “Analysis of GRB 080319B and GRB 050904 within the Fireshell Model: Evidence for a Broader Spectral Energy Distribution”; The Astrophysical Journal, 756 (2012), id. 16; DOI: 10.1088/0004- 637X/756/1/16 -) Bianco, C. L.; Amati, L.; Bernardini, M. G.; Caito, L.; De Barros, G.; Izzo, L.; Patricelli, B.; Ruffini, R.; “The class of ``disguised'' short GRBs and its implications for the Amati relation”; Memorie della Società Astronomica Italiana Supplement, 21 (2012), 139. -) Patricelli, B.; Bernardini, M. G.; Bianco, C. L.; Caito, L.; de Barros, G.; Izzo, L.; Ruffini, R.; Vereshchagin, G.; “High Energetic Gamma Ray Bursts and Their Spectral Properties Within the Fireshell Model”; International Journal of Modern Physics: Conference Series, 12 (2012), pp. -
A Proposed Italian Contribution to the Mirax Scientific Payload 51
IL NUOVO CIMENTO Vol. 34 C, N. 3 Maggio-Giugno 2011 DOI 10.1393/ncc/i2011-10867-0 Colloquia: Scineghe2010 A proposed Italian contribution to the MIRAX Scientific Payload L. Amati(1),M.Feroci(2),F.Frontera(3), C. Labanti(1),A.Vacchi(4), A. Argan(5), R. Campana(2),E.Costa(2), R. Ruffini(6), I. Bombaci(7), E. Del Monte(2), I. Donnarumma(2), A. Drago(3), Y. Evangelista(2), R. Farinelli(3), G. Ghirlanda(8),G.Ghisellini(8),C.Guidorzi(3), F. Fuschino(1), F. Lazzarotto(2), D. Lazzati(9),P.Malcovati(10), M. Marisaldi(1), E. Morelli(1),F.Muleri(2), M. Orlandini(1), L. Pacciani(2), E. Pian(11),M.Rapisarda(2),A.Rubini(2), R. Salvaterra(12), P. Soffitta(2), L. Titarchuk(3),A.Traci(1), A. Rashevsky(4),G.Zampa(4),N.Zampa(4), N. Auricchio(1),A.Basili(1),E.Caroli(1),E.Maiorano(1),N.Masetti(1), L. Nicastro(1), E. Palazzi(1),S.Silvestri(1), J. B. Stephen(1)andJ. Braga(13) (1) INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica - Bologna, Italy (2) INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica - Rome, Italy (3) Universit`a di Ferrara - Ferrara, Italy (4) INFN, Sezione di Trieste - Trieste, Italy (5) INAF, sede centrale - Rome, Italy (6) International Center for Relativistic Astrophysics Network (ICRANet) - Pescara, Italy (7) Universit`adiPisa-Pisa,Italy (8) INAF, Osservatorio Astronomico di Brera - Merate, Italy (9) North Carolina State University - Raleigh, NC, USA (10) Universit`a di Pavia - Pavia, Italy (11) INAF, Osservatorio Astronomico di Trieste - Trieste, Italy (12) Universit`a dell’Insubria - Como, Italy (13) Instituto Nacional de Pesquisas Espaciais (INPE) - Sao Jos`e dos Campos, Brazil (ricevuto il 25 Febbraio 2011) Summary. -
Global Program
PROGRAM Monday morning, July 13th La Sapienza Roma - Aula Magna 09:00 - 10:00 Inaugural Session Chairperson: Paolo de Bernardis Welcoming addresses Remo Ruffini (ICRANet), Yvonne Choquet-Bruhat (French Académie des Sciences), Jose’ Funes (Vatican City), Ricardo Neiva Tavares (Ambassador of Brazil), Sargis Ghazaryan (Ambassador of Armenia), Francis Everitt (Stanford University) and Chris Fryer (University of Arizona) Marcel Grossmann Awards Yakov Sinai, Martin Rees, Sachiko Tsuruta, Ken’Ichi Nomoto, ESA (acceptance speech by Johann-Dietrich Woerner, ESA Director General) Lectiones Magistrales Yakov Sinai (Princeton University) 10:00 - 10:35 Deterministic chaos Martin Rees (University of Cambridge) 10:35 - 11:10 How our understanding of cosmology and black holes has been revolutionised since the 1960s 11:10 - 11:35 Group Picture - Coffee Break Gerard 't Hooft (University of Utrecht) 11:35 - 12:10 Local Conformal Symmetry in Black Holes, Standard Model, and Quantum Gravity Plenary Session: Mathematics and GR Katarzyna Rejzner (University of York) 12:10 - 12:40 Effective quantum gravity observables and locally covariant QFT Zvi Bern (UCLA Physics & Astronomy) 12:40 - 13:10 Ultraviolet surprises in quantum gravity 14:30 - 18:00 Parallel Session 18:45 - 20:00 Stephen Hawking (teleconference) (University of Cambridge) Public Lecture Fire in the Equations Monday afternoon, July 13th Code Classroom Title Chairperson AC2 ChN1 MHD processes near compact objects Sergej Moiseenko FF Extended Theories of Gravity and Quantum Salvatore Capozziello, Gabriele AT1 A Cabibbo Cosmology Gionti AT3 A FF3 Wormholes, Energy Conditions and Time Machines Francisco Lobo Localized selfgravitating field systems in the AT4 FF6 Dmitry Galtsov, Michael Volkov Einstein and alternatives theories of gravity BH1:Binary Black Holes as Sources of Pablo Laguna, Anatoly M. -
Viktor Ambartsumian International Prize 2012 Goes to Prof. Jaan EINASTO (Estonia) and Prof
Viktor Ambartsumian International Prize Steering Committee Official Press-Release, 21.07.2012, Yerevan, Armenia Viktor Ambartsumian International Prize 2012 goes to Prof. Jaan EINASTO (Estonia) and Prof. Igor NOVIKOV (Russia) Viktor Ambartsumian International Prize has been established by the President of Armenia in 2009 and at present is one of the important awards in astronomy/astrophysics and related sciences. It is being awarded to outstanding scientists from any country and nationality having significant contribution in science. The Prize totals USD 500,000 and since 2010 is being awarded once every two years. March 18 was the deadline for nominations, and the International Steering Committee chaired by the President of the Armenian National Academy of Sciences Prof. Radik Martirosyan received nominations from national academies of sciences, universities, observatories, and Nobel Prize winners for 12 outstanding scientists and teams from different countries. After a thorough study of the nominated works, as well as independent referees’ reports, the Committee had several discussions and finally it was decided to share the Prize between Prof. Jaan Einasto (Tartu Observatory, Estonia), nominated by Tartu Observatory “for his fundamental contributions to the discovery of dark matter and the cosmic web” and Prof. Igor Novikov (Astro-Space Center, P.N. Lebedev Physics Institute, Russia) nominated by the Institute of Theoretical Physics and Astronomy of Vilnius University, Lithuania “for his pioneering formulation how to confirm observationally that our Universe started as a hot one, and for proposing the method for determination of quasar masses”. Jaan Einasto (83) is a senior scientist at the Tartu Observatory, Estonia. Since 1952 he works at Tartu Observatory. -
Sandra Faber Receives $500,000 Gruber Cosmology Prize
Media Contact: A. Sarah Hreha +1 (203) 432-6231 [email protected] Online Newsroom: www.gruber.yale.edu/news-media SANDRA FABER RECEIVES $500,000 GRUBER COSMOLOGY PRIZE FOR CAREER ACHIEVEMENTS Sandra Faber May 17, 2017, New Haven, CT – The 2017 Gruber Foundation Cosmology Prize recognizes Sandra M. Faber for a body of work that has helped establish many of the foundational principles underlying the modern understanding of the universe on the largest scales. The citation praises Faber for “her groundbreaking studies of the structure, dynamics, and evolution of galaxies.” That work has led to the widespread acceptance of the need to study dark matter, to an appreciation of the inextricable relationship between the presence of dark matter and the formation of galaxies, and to the recognition that black holes reside at the heart of most large galaxies. She has also made significant contributions to the innovations in telescope technology that have revolutionized modern astronomy. Through these myriad achievements, the Gruber citation adds, Faber has “aided and inspired the work of astronomers and cosmologists worldwide.” Faber will receive the $500,000 award as well as a gold medal at a ceremony this fall. Less than a hundred years ago, astronomers were still debating whether our Milky Way Galaxy was the entirety of the universe or if other galaxies existed beyond our own. Today astronomers estimate the number of galaxies within the visible universe at somewhere between 200 billion and 2 trillion. For more than four decades Faber—now Professor Emerita at the University of California, Santa Cruz, and Astronomer Emerita of the University of California Observatories—has served as a pivotal figure in leading and guiding the exploration of this unimaginably vast virgin scientific territory. -
What Is Gravity Probe B?
What is Gravity Probe B? Gravity Probe B (GP-B) is a NASA physics mission to experimentally in• William Fairbank once remarked: “No mission could be sim• vestigate Einstein’s 1916 general theory of relativity—his theory of gravity. pler than Gravity Probe B. It’s just a star, a telescope, and a spin• GB-B uses four spherical gyroscopes and a telescope, housed in a satellite ning sphere.” However, it took the exceptional collaboration of Stan• orbiting 642 km (400 mi) above the Earth, to measure, with unprecedented ford, MSFC, Lockheed Martin and a host of others more than four accuracy, two extraordinary effects predicted by the general theory of rela• decades to develop the ultra-precise gyroscopes and the other cut• tivity: 1) the geodetic effect—the amount by which the Earth warps the local ting-edge technologies necessary to carry out this “simple” experiment. spacetime in which it resides; and 2) the frame-dragging effect—the amount by which the rotating Earth drags its local spacetime around with it. GP-B tests these two effects by precisely measuring the precession (displacement) The GP-B Flight Mission angles of the spin axes of the four gyros over the course of a year and com• paring these experimental results with predictions from Einstein’s theory. On April 20, 2004 at 9:57:24 AM PDT, a crowd of over 2,000 current and former GP-B team members and supporters watched and cheered as the A Quest for Experimental Truth GP-B spacecraftlift ed offf rom Vandenberg Air Force Base. -
Marcel Grossmann Awards
MG15 MARCEL GROSSMANN AWARDS ROME 2018 ICRANet and ICRA MG XV MARCEL GROSSMANN AWARDS ROME 2018 and TEST The 15th Marcel Grossmann Meeting – MG XV 2nd July 2018, Rome (Italy) Aula Magna – University “Sapienza” of Rome Institutional Awards Goes to: PLANCK SCIENTIFIC COLLABORATION (ESA) “for obtaining important constraints on the models of inflationary stage of the Universe and level of primordial non-Gaussianity; measuring with unprecedented sensitivity gravitational lensing of Cosmic Microwave Background fluctuations by large-scale structure of the Universe and corresponding B- polarization of CMB, the imprint on the CMB of hot gas in galaxy clusters; getting unique information about the time of reionization of our Universe and distribution and properties of the dust and magnetic fields in our Galaxy” - presented to Jean-Loup Puget, the Principal Investigator of the High Frequency Instrument (HFI) HANSEN EXPERIMENTAL PHYSICS LABORATORY AT STANFORD UNIVERSITY “to HEPL for having developed interdepartmental activities at Stanford University at the frontier of fundamental physics, astrophysics and technology” - presented to Research Professor Leo Hollberg, HEPL Assistant Director Individual Awards Goes to LYMAN PAGE “for his collaboration with David Wilkinson in realizing the NASA Explorer WMAP mission and as founding director of the Atacama Cosmology Telescope” Goes to RASHID ALIEVICH SUNYAEV “for the development of theoretical tools in the scrutinising, through the CMB, of the first observable electromagnetic appearance of our Universe” Goes to SHING-TUNG YAU “for the proof of the positivity of total mass in the theory of general relativity and perfecting as well the concept of quasi-local mass, for his proof of the Calabi conjecture, for his continuous inspiring role in the study of black holes physics” Each recipient is presented with a silver casting of the TEST sculpture by the artist A.