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Pos(BASH 2013)009 † ∗ [email protected] Speaker
The Progenitor Systems and Explosion Mechanisms of Supernovae PoS(BASH 2013)009 Dan Milisavljevic∗ † Harvard University E-mail: [email protected] Supernovae are among the most powerful explosions in the universe. They affect the energy balance, global structure, and chemical make-up of galaxies, they produce neutron stars, black holes, and some gamma-ray bursts, and they have been used as cosmological yardsticks to detect the accelerating expansion of the universe. Fundamental properties of these cosmic engines, however, remain uncertain. In this review we discuss the progress made over the last two decades in understanding supernova progenitor systems and explosion mechanisms. We also comment on anticipated future directions of research and highlight alternative methods of investigation using young supernova remnants. Frank N. Bash Symposium 2013: New Horizons in Astronomy October 6-8, 2013 Austin, Texas ∗Speaker. †Many thanks to R. Fesen, A. Soderberg, R. Margutti, J. Parrent, and L. Mason for helpful discussions and support during the preparation of this manuscript. c Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. http://pos.sissa.it/ Supernova Progenitor Systems and Explosion Mechanisms Dan Milisavljevic PoS(BASH 2013)009 Figure 1: Left: Hubble Space Telescope image of the Crab Nebula as observed in the optical. This is the remnant of the original explosion of SN 1054. Credit: NASA/ESA/J.Hester/A.Loll. Right: Multi- wavelength composite image of Tycho’s supernova remnant. This is associated with the explosion of SN 1572. Credit NASA/CXC/SAO (X-ray); NASA/JPL-Caltech (Infrared); MPIA/Calar Alto/Krause et al. -
Arxiv:1108.0403V1 [Astro-Ph.CO] 1 Aug 2011 Esitps Hleg Oglx Omto Oesadthe and Models Formation Galaxy at to Tion
Noname manuscript No. (will be inserted by the editor) Production of dust by massive stars at high redshift C. Gall · J. Hjorth · A. C. Andersen To be published in A&A Review Abstract The large amounts of dust detected in sub-millimeter galaxies and quasars at high redshift pose a challenge to galaxy formation models and theories of cosmic dust forma- tion. At z > 6 only stars of relatively high mass (> 3 M⊙) are sufficiently short-lived to be potential stellar sources of dust. This review is devoted to identifying and quantifying the most important stellar channels of rapid dust formation. We ascertain the dust production ef- ficiency of stars in the mass range 3–40 M⊙ using both observed and theoretical dust yields of evolved massive stars and supernovae (SNe) and provide analytical expressions for the dust production efficiencies in various scenarios. We also address the strong sensitivity of the total dust productivity to the initial mass function. From simple considerations, we find that, in the early Universe, high-mass (> 3 M⊙) asymptotic giant branch stars can only be −3 dominant dust producers if SNe generate . 3 × 10 M⊙ of dust whereas SNe prevail if they are more efficient. We address the challenges in inferring dust masses and star-formation rates from observations of high-redshift galaxies. We conclude that significant SN dust pro- duction at high redshift is likely required to reproduce current dust mass estimates, possibly coupled with rapid dust grain growth in the interstellar medium. C. Gall Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark Tel.: +45 353 20 519 Fax: +45 353 20 573 E-mail: [email protected] J. -
Planning the VLT Interferometer
No. 60 - -.June 1990 --, Planning the VLTVLT Interferometer J. M. BECKERS, ESO 1. The VlVLTT Interferometer: VLTVLT Reports 44 and 49), the interferointerfero- approved YLTVLT implementation. P. LemaLena One of the Operating Modes metric mode of the VLVLTT was indudedincluded in described the concept and planning torfor ofoftheVLT the VLT the VLTVLT proposal, and accepted inin theIhe the inlerferometricinterferometric mode of the VLTVLT at 1.1.11 Itsfts Context Adaptive Optics at the ESO 3.6-m Telescope The Very Large Telescope has three differenldifferent modes of being used. As four separate 8-metre telescopes it provides theIhe capabililycapability of carrying out in parallel tourfour different observing programmes, each with a sensitivitysensilivity which matches that of the other most powerful groundground- based telescopes available. In the secsec- ond mode the light of the four tele-lele scopes is combined in a single imageimage making ilit inin sensitivity the most powerful telescope on earth, almost 16t6 metres in diameter if the light losses in the beam eombinationcombination canean be kept low. In the third mode Ihethe light of the four tele-tele scopes is combined coherenlly,coherently, allowallow- This faise-colourfalse-colour photo illustrates the dramatiedramatic improvement in image sharpness whiehwhich is ing interferomelrlcinterferometric observations with the obtained with adaptive optiesoptics at the ESO 3.6·m3.6-m telescope. seeSee also the artielearticle on page 9. unparalleled sensitivity resulting fromtrom I1It shows the 5.5 magnitudemagnilude star HR 6658 in the galacticga/aeUe eluslercluster Messier 7 (NGC 6475), as the 8-metre apertures. In this mode theIhe observed in the infrared L·bandL-band (wavelength 3.5pm),3.Sllm), without ("ullcorrecled",("uncorrected", left) alldand with angular resolulionresolution is determined by the "corrected","corrected, right) the "VL"VLTT adaptive optics prototype" switched on. -
How Supernovae Became the Basis of Observational Cosmology
Journal of Astronomical History and Heritage, 19(2), 203–215 (2016). HOW SUPERNOVAE BECAME THE BASIS OF OBSERVATIONAL COSMOLOGY Maria Victorovna Pruzhinskaya Laboratoire de Physique Corpusculaire, Université Clermont Auvergne, Université Blaise Pascal, CNRS/IN2P3, Clermont-Ferrand, France; and Sternberg Astronomical Institute of Lomonosov Moscow State University, 119991, Moscow, Universitetsky prospect 13, Russia. Email: [email protected] and Sergey Mikhailovich Lisakov Laboratoire Lagrange, UMR7293, Université Nice Sophia-Antipolis, Observatoire de la Côte d’Azur, Boulevard de l'Observatoire, CS 34229, Nice, France. Email: [email protected] Abstract: This paper is dedicated to the discovery of one of the most important relationships in supernova cosmology—the relation between the peak luminosity of Type Ia supernovae and their luminosity decline rate after maximum light. The history of this relationship is quite long and interesting. The relationship was independently discovered by the American statistician and astronomer Bert Woodard Rust and the Soviet astronomer Yury Pavlovich Pskovskii in the 1970s. Using a limited sample of Type I supernovae they were able to show that the brighter the supernova is, the slower its luminosity declines after maximum. Only with the appearance of CCD cameras could Mark Phillips re-inspect this relationship on a new level of accuracy using a better sample of supernovae. His investigations confirmed the idea proposed earlier by Rust and Pskovskii. Keywords: supernovae, Pskovskii, Rust 1 INTRODUCTION However, from the moment that Albert Einstein (1879–1955; Whittaker, 1955) introduced into the In 1998–1999 astronomers discovered the accel- equations of the General Theory of Relativity a erating expansion of the Universe through the cosmological constant until the discovery of the observations of very far standard candles (for accelerating expansion of the Universe, nearly a review see Lipunov and Chernin, 2012). -
Sky & Telescope
Eclipse from the See Sirius B: The Nearest Spot the Other EDGE OF SPACE p. 66 WHITE DWARF p. 30 BLUE PLANETS p. 50 THE ESSENTIAL GUIDE TO ASTRONOMY What Put the Bang in the Big Bang p. 22 Telescope Alignment Made Easy p. 64 Explore the Nearby Milky Way p. 32 How to Draw the Moon p. 54 OCTOBER 2013 Cosmic Gold Rush Racing to fi nd exploding stars p. 16 Visit SkyandTelescope.com Download Our Free SkyWeek App FC Oct2013_J.indd 1 8/2/13 2:47 PM “I can’t say when I’ve ever enjoyed owning anything more than my Tele Vue products.” — R.C, TX Tele Vue-76 Why Are Tele Vue Products So Good? Because We Aim to Please! For over 30-years we’ve created eyepieces and telescopes focusing on a singular target; deliver a cus- tomer experience “...even better than you imagined.” Eyepieces with wider, sharper fields of view so you see more at any power, Rich-field refractors with APO performance so you can enjoy Andromeda as well as Jupiter in all their splendor. Tele Vue products complement each other to pro- vide an observing experience as exquisite in performance as it is enjoyable and effortless. And how do we score with our valued customers? Judging by superlatives like: “in- credible, truly amazing, awesome, fantastic, beautiful, work of art, exceeded expectations by a mile, best quality available, WOW, outstanding, uncom- NP101 f/5.4 APO refractor promised, perfect, gorgeous” etc., BULLSEYE! See these superlatives in with 110° Ethos-SX eye- piece shown on their original warranty card context at TeleVue.com/comments. -
Radio Supernovae and the Square Kilometer Array
RADIO SUPERNOVAE AND THE SQUARE KILOMETER ARRAY SCHUYLER D. VAN DYK IPAC/Caltech, MS 100-22, Pasadena, CA 91125, USA E-mail: [email protected] KURT W. WEILER & MARCOS J. MONTES Naval Research Lab, Code 7214, Washington, DC 20375-5320 USA E-mail: [email protected], [email protected] RICHARD A. SRAMEK NRAO/VLA, PO Box 0, Socorro, NM 87801 USA E-mail: [email protected] NINO PANAGIA STScI/ESA, 3700 San Martin Dr., Baltimore, MD 21218 USA E-mail: [email protected] Detailed radio observations of extragalactic supernovae are critical to obtaining valuable informa- tion about the nature and evolutionary phase of the progenitor star in the period of a few hundred to several tens-of-thousands of years before explosion. Additionally, radio observations of old super- novae (>20 years) provide important clues to the evolution of supernovae into supernova remnants, a gap of almost 300 years (SN 1680, Cas A, to SN 1923A) in our current knowledge. Finally, new empirical relations indicate that it may be possible to use some types of radio supernovae as distance yardsticks, to give an independent measure of the distance scale of the Universe. However, the study of radio supernovae is limited by the sensitivity and resolution of current radio telescope arrays. Therefore, it is necessary to have more sensitive arrays, such as the Square Kilometer Array and the several other radio telescope upgrade proposals, to advance radio supernova studies and our understanding of supernovae, their progenitors, and the connection to supernova remnants. 1 Supernovae Supernovae (SNe) play a vital role in galactic evolution through explosive nucleosynthesis and chemical enrichment, through energy input into the interstellar medium, through production of stellar remnants such as neutron stars, pulsars, and black holes, and by the production of cosmic rays. -
The Deepest Radio Observations of Nearby Type IA Supernovae: Constraining Progenitor Types and Optimizing Future Surveys
Draft version January 20, 2020 Typeset using LATEX default style in AASTeX63 The Deepest Radio Observations of Nearby Type IA Supernovae: Constraining Progenitor Types and Optimizing Future Surveys Peter Lundqvist,1, 2 Esha Kundu,1, 2, 3 Miguel A. Pérez-Torres,4, 5 Stuart D. Ryder,6, 7 Claes-Ingvar Björnsson,1 Javier Moldon,8 Megan K. Argo,8, 9 Robert J. Beswick,8 Antxon Alberdi,4 and Erik C. Kool1, 2, 6, 7 1Department of Astronomy, AlbaNova University Center, Stockholm University, SE-10691 Stockholm, Sweden 2The Oskar Klein Centre, AlbaNova, SE-10691 Stockholm, Sweden 3Curtin Institute of Radio Astronomy, Curtin University, GPO Box U1987, Perth WA 6845, Australia 4Instituto de Astrofísica de Andalucía, Glorieta de las Astronomía, s/n, E-18008 Granada, Spain 5Visiting Scientist: Departamento de Física Teorica, Facultad de Ciencias, Universidad de Zaragoza, Spain 6Dept. of Physics and Astronomy, Macquarie University, Sydney NSW 2109, Australia 7Australian Astronomical Observatory, 105 Delhi Rd, North Ryde, NSW 2113, Australia 8Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, M13 9PL, UK 9Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK (Received December 30, 2019; Revised January 15, 2020; Accepted January 16, 2020) ABSTRACT We report deep radio observations of nearby Type Ia Supernovae (SNe Ia) with the electronic Multi-Element Radio Linked Interferometer Net-work (e-MERLIN), and the Australia Telescope Compact Array (ATCA). No detections were made. With standard assumptions for the energy densities of relativistic electrons going into a power-law energy distribution, and the magnetic field strength (e = B = 0:1), we arrive at the upper limits on mass-loss rate for the progenitor system of SN 2013dy (2016coj, 2018gv, 2018pv, 2019np), to be Û −8 −1 −1 M ∼< 12 ¹2:8; 1:3; 2:1; 1:7º × 10 M yr ¹vw/100 km s º, where vw is the wind speed of the mass loss. -
Arxiv:1008.2754V2 [Astro-Ph.HE] 25 Jan 2011 H Yei N20b.Te Hwdisrs Ie( Time Rise Its Showed 2010A; Studied They (2010) Al
Draft version October 22, 2018 A Preprint typeset using LTEX style emulateapj v. 11/10/09 AN EMERGING CLASS OF BRIGHT, FAST-EVOLVING SUPERNOVAE WITH LOW-MASS EJECTA Hagai B. Perets1, Carles Badenes2,3, Iair Arcavi2, Joshua D. Simon4 and Avishay Gal-yam2 Draft version October 22, 2018 Abstract A recent analysis of supernova (SN) 2002bj revealed that it was an apparently unique type Ib SN. It showed a high peak luminosity, with absolute magnitude MR ∼−18.5, but an extremely fast-evolving light curve. It had a rise time of < 7 days followed by a decline of 0.25 mag per day in B-band, and showed evidence for very low mass of ejecta (< 0.15 M⊙). Here we discuss two additional historical events, SN 1885A and SN 1939B, showing similarly fast light curves and low ejected masses. We discuss the low mass of ejecta inferred from our analysis of the SN 1885A remnant in M31, and present for the first time the spectrum of SN 1939B. The old environments of both SN 1885A (in the bulge of M31) and SN 1939B (in an elliptical galaxy with no traces of star formation activity), strongly support old white dwarf progenitors for these SNe. We find no clear evidence for helium in the spectrum of SN 1939B, as might be expected from a helium-shell detonation on a white dwarf, suggested to be the origin of SN 2002bj. Finally, the discovery of all the observed fast-evolving SNe in nearby galaxies suggests that the rate of these peculiar SNe is at least 1-2 % of all SNe. -
Prospects of Newly Detecting Nearby Star-Forming Galaxies by the Cherenkov Telescope Array
MNRAS 000, 1–9 (2020) Preprint 3 November 2020 Compiled using MNRAS LATEX style file v3.0 Prospects of newly detecting nearby star-forming galaxies by the Cherenkov Telescope Array Naoya Shimono,1¢ Tomonori Totani,1,2 Takahiro Sudoh1 1Department of Astronomy, the University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan 2Research Center for the Early Universe, the University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan Accepted XXX. Received YYY; in original form ZZZ ABSTRACT Prospects of the Cherenkov Telescope Array (CTA) for the study of very high energy gamma- ray emission from nearby star-forming galaxies are investigated. In the previous work, we constructed a model to calculate luminosity and energy spectrum of pion-decay gamma-ray emission produced by cosmic-ray interaction with the interstellar medium (ISM), from four physical quantities of galaxies [star formation rate (SFR), gas mass, stellar mass, and effective radius]. The model is in good agreement with the observed GeV–TeV emission of several nearby galaxies. Applying this model to nearby galaxies that are not yet detected in gamma rays (mainly from the KINGFISH catalog), their gamma-ray luminosities and spectra are predicted. We identify galaxies of the highest chance of detection by CTA, including NGC 5236, M33, NGC 6946, and IC 342. Concerning gamma-ray spectra, NGC 1482 is particularly interesting because our model predicts that this galaxy is close to the calorimetric limit and its gamma-ray spectral index in GeV–TeV is close to that of cosmic-ray protons injected into ISM. Therefore this galaxy may be detectable by CTA even though its GeV flux is below the Fermi sensitivity limit. -
The Fast and Furious Decay of the Peculiar Type-I Supernova 2005Ek
The Astrophysical Journal, 774:58 (18pp), 2013 September 1 doi:10.1088/0004-637X/774/1/58 C 2013. The American Astronomical Society. All rights reserved. Printed in the U.S.A. THE FAST AND FURIOUS DECAY OF THE PECULIAR TYPE Ic SUPERNOVA 2005ek M. R. Drout1, A. M. Soderberg1, P. A. Mazzali2,3,4, J. T. Parrent5,6, R. Margutti1, D. Milisavljevic1, N. E. Sanders1, R. Chornock1, R. J. Foley1,R.P.Kirshner1, A. V. Filippenko7,W.Li7,14,P.J.Brown8,S.B.Cenko7, S. Chakraborti1, P. Challis1, A. Friedman1,9, M. Ganeshalingam7, M. Hicken1,C.Jensen1, M. Modjaz10, H. B. Perets11, J. M. Silverman12,15, and D. S. Wong13 1 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA; [email protected] 2 Astrophysics Research Institute, Liverpool John Moores University, CH41 1LD Liverpool, UK 3 INAF-Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy 4 Max-Planck-Institut for Astrophysik, Karl-Schwarzschildstr. 1, D-85748 Garching, Germany 5 Department of Physics and Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755, USA 6 Las Cumbres Observatory Global Telescope Network, Goleta, CA 93117, USA 7 Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA 8 Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843-4242, USA 9 Center for Theoretical Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, 6-304, Cambridge, MA 02139, USA 10 Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA 11 Physics Department, Technion-Israel Institute of Technology, 32000 Haifa, Israel 12 Department of Astronomy, University of Texas at Austin, Austin, TX 78712, USA 13 Physics Department, University of Alberta, 4-183 CCIS, Edmonton, AB T6G 2E1, Canada Received 2013 June 10; accepted 2013 July 10; published 2013 August 16 ABSTRACT We present extensive multi-wavelength observations of the extremely rapidly declining Type Ic supernova (SN Ic), SN 2005ek. -
Light Curve Powering Mechanisms of Superluminous Supernovae
Light Curve Powering Mechanisms of Superluminous Supernovae A dissertation presented to the faculty of the College of Arts and Science of Ohio University In partial fulfillment of the requirements for the degree Doctor of Philosophy Kornpob Bhirombhakdi May 2019 © 2019 Kornpob Bhirombhakdi. All Rights Reserved. 2 This dissertation titled Light Curve Powering Mechanisms of Superluminous Supernovae by KORNPOB BHIROMBHAKDI has been approved for the Department of Physics and Astronomy and the College of Arts and Science by Ryan Chornock Assistant Professor of Physics and Astronomy Joseph Shields Interim Dean, College of Arts and Science 3 Abstract BHIROMBHAKDI, KORNPOB, Ph.D., May 2019, Physics Light Curve Powering Mechanisms of Superluminous Supernovae (111 pp.) Director of Dissertation: Ryan Chornock The power sources of some superluminous supernovae (SLSNe), which are at peak 10{ 100 times brighter than typical SNe, are still unknown. While some hydrogen-rich SLSNe that show narrow Hα emission (SLSNe-IIn) might be explained by strong circumstellar interaction (CSI) similar to typical SNe IIn, there are some hydrogen-rich events without the narrow Hα features (SLSNe-II) and hydrogen-poor ones (SLSNe-I) that strong CSI has difficulties to explain. In this dissertation, I investigate the power sources of these two SLSN classes. SN 2015bn (SLSN-I) and SN 2008es (SLSN-II) are the targets in this study. I perform late-time multi-wavelength observations on these objects to determine their power sources. Evidence supports that SN 2008es was powered by strong CSI, while the late-time X-ray non-detection we observed neither supports nor denies magnetar spindown as the most preferred power origin of SN 2015bn. -
Biennial Report 2004 2005 Published in Spain by the ISAAC NEWTON GROUP of TELESCOPES (ING) ISSN 1575–8966 Legal License: TF–1142 /99
I SAAC N EWTON G ROUP OF T ELESCOPES Biennial Report 2004 2005 Published in Spain by the ISAAC NEWTON GROUP OF TELESCOPES (ING) ISSN 1575–8966 Legal license: TF–1142 /99 Apartado de correos, 321 E-38700 Santa Cruz de La Palma; Canary Islands; Spain Tel: +34 922 425 400 Fax: +34 922 425 401 URL: http://www.ing.iac.es/; http://www.ast.cam.ac.uk/ING/ (UK mirror) Editor and designer: Javier Méndez ([email protected]) Preprinting: Gráficas El Time. Tel: +34 922 416 651 Printing: Gráficas Sabater. Tel: +34 922 623 555 Front cover: IC1396 or the Elephant Trunk Nebula. Image obtained as part of the Isaac Newton Telescope Photometric Hα Survey of the Northen Galactic Plane, and it was prepared by Nick Wright, University College London. Inset: Photograph of laser test on the William Herschel Telescope as part of GLAS preparatory study. Credit: Javier Méndez. Other picture credits: Nik Szymanek (WHT, p. 4); Nik Szymanek (INT, p. 4); Nik Szymanek (JKT, p. 4); Nik Szymanek (ING, p. 5); Jens Moser (WHT, back); Jens Moser (INT, back); Nik Szymanek (JKT, back). The ING Biennial Report is available online at http://www.ing.iac.es/PR/AR/ or at http://www.ast.cam.ac.uk/ING/PR/AR/. ISAAC NEWTON GROUP OF TELESCOPES Biennial Report of the PPARC-NWO-IAC ING Board 2004 – 2005 ISAAC NEWTON GROUP William Herschel Telescope Isaac Newton Telescope Jacobus Kapteyn Telescope 4 • ING BIENNIAL R EPORT 2004–2005 OF TELESCOPES The Isaac Newton Group of Telescopes (ING) consists of the 4.2- metre William Herschel Telescope (WHT), the 2.5-metre Isaac Newton Telescope (INT) and the 1.0-metre Jacobus Kapteyn Telescope (JKT).