Journal ArticleDOI
SYNAPPS: Data-Driven Analysis for Supernova Spectroscopy
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TLDR
A new computer program, SYNAPPS, for forward-modeling of supernova (SN) spectroscopy data sets, a spectrum fitter embedding a highly parameterized synthetic SN spectrum calculation within a parallel asynchronous optimizer.Abstract:
We introduce a new computer program, SYNAPPS, for forward-modeling of supernova (SN) spectroscopy data sets. SYNAPPS is a spectrum fitter embedding a highly parameterized synthetic SN spectrum calculation within a parallel asynchronous optimizer. This open-source code is primarily aimed at the problem of systematically interpreting large sets of SN spectroscopy data. While SYNAPPS should be useful to current SN spectroscopy efforts like the Nearby Supernova Factory, Lick Observatory Supernova Search, Palomar Transient Factory, Harvard Center for Astrophysics SN program, and so on, it could also benefit future similar efforts connected to the Dark Energy Survey, Panoramic Survey Telescope and Rapid Response System, or the Large Synoptic Survey Telescope. Smaller programs are also potential users. SYNAPPS illustrates the potential for data-driven discovery enabled by high-performance computing, where complex physical systems are directly constrained by large information-rich sets of scientific observations. Here, we discuss the motivation of our approach, outline the structure of the code, present some example calculations, and describe a few enhancements in terms of physics modeling, optimization, and computing that we will be pursuing for the future.read more
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Journal ArticleDOI
Supernova SN 2011fe from an exploding carbon–oxygen white dwarf star
Peter Nugent,Peter Nugent,Mark Sullivan,S. Bradley Cenko,R. C. Thomas,Daniel Kasen,Daniel Kasen,D. Andrew Howell,D. Andrew Howell,D. Bersier,Joshua S. Bloom,Shrinivas R. Kulkarni,M. T. Kandrashoff,Alexei V. Filippenko,Jeffrey M. Silverman,Geoffrey W. Marcy,Andrew W. Howard,Howard Isaacson,Kate Maguire,Nao Suzuki,J. E. Tarlton,Yen-Chen Pan,Lars Bildsten,Benjamin J. Fulton,Benjamin J. Fulton,Jerod T. Parrent,Jerod T. Parrent,David J. Sand,David J. Sand,Philipp Podsiadlowski,Federica B. Bianco,Federica B. Bianco,Benjamin Dilday,Benjamin Dilday,Melissa L. Graham,Melissa L. Graham,J. D. Lyman,Phil A. James,Mansi M. Kasliwal,Nicholas M. Law,Robert M. Quimby,Isobel Hook,Emma S. Walker,Paolo A. Mazzali,Elena Pian,Eran O. Ofek,Eran O. Ofek,Avishay Gal-Yam,Dovi Poznanski,Dovi Poznanski,Dovi Poznanski +50 more
TL;DR: Early observations of type Ia supernova SN 2011fe in the galaxy M101 at a distance from Earth of 6.4 megaparsecs find that the exploding star was probably a carbon–oxygen white dwarf, and from the lack of an early shock it is concluded that the companion was likely a main-sequence star.
Journal ArticleDOI
THE SPECTROSCOPIC DIVERSITY OF TYPE Ia SUPERNOVAE
Stéphane Blondin,Thomas Matheson,Robert P. Kirshner,Kaisey S. Mandel,Kaisey S. Mandel,P. Berlind,M. Calkins,Peter M. Challis,Peter M. Garnavich,Saurabh Jha,Maryam Modjaz,Adam G. Riess,Adam G. Riess,Brian P. Schmidt +13 more
TL;DR: In this article, the authors presented 2603 spectra of 462 nearby Type Ia supernovae (SNe Ia), including 2065 previously unpublished spectra, obtained during 1993-2008 through the Center for Astrophysics Supernova Program.
Journal ArticleDOI
Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory
R. Pereira,R. C. Thomas,Greg Aldering,P. Antilogus,C. Baltay,S. Benitez-Herrera,S. Bongard,C. Buton,A. Canto,F. Cellier-Holzem,J. Chen,M. J. Childress,M. J. Childress,N. Chotard,N. Chotard,Y. Copin,H. K. Fakhouri,H. K. Fakhouri,M. Fink,Dominique Fouchez,E. Gangler,Julien Guy,Wolfgang Hillebrandt,Eric Hsiao,M. Kerschhaggl,M. Kowalski,Markus Kromer,Jakob Nordin,Jakob Nordin,Peter Nugent,K. Paech,Reynald Pain,E. Pecontal,Saul Perlmutter,Saul Perlmutter,David Rabinowitz,M. Rigault,K. Runge,C. Saunders,G. Smadja,Charling Tao,Charling Tao,S. Taubenberger,A. Tilquin,C. Y. Wu,C. Y. Wu +45 more
TL;DR: In this paper, 32 epochs of optical (3300−9700 A) spectrophotometric observations of the nearby quintessential "normal" type Ia supernova (SN Ia) SN 2011fe in the galaxy M101, extending from −15 to +97 d with respect to B -band maximum, obtained by the Nearby Supernova Factory collaboration.
Journal ArticleDOI
Superluminous supernovae from PESSTO
Matt Nicholl,Stephen J. Smartt,Anders Jerkstrand,Cosimo Inserra,Joseph P. Anderson,C. Baltay,S. Benetti,T. W. Chen,Nancy Elias-Rosa,U. Feindt,Morgan Fraser,Avishay Gal-Yam,E. Hadjiyska,D. A. Howell,D. A. Howell,Rubina Kotak,Andy Lawrence,Giorgos Leloudas,Giorgos Leloudas,S. Margheim,Seppo Mattila,M. McCrum,Ryan McKinnon,Alexander Mead,Peter Nugent,David Rabinowitz,Armin Rest,K. W. Smith,Jesper Sollerman,Mark Sullivan,Francesco Taddia,Stefano Valenti,Stefano Valenti,Emma S. Walker,David Young +34 more
TL;DR: In this article, optical spectra and light curves for three hydrogen-poor superluminous supernovae followed by the Public ESO Spectroscopic Survey of Transient Objects (PESSTO) are presented.
Journal ArticleDOI
SN 2015bn: A DETAILED MULTI-WAVELENGTH VIEW OF A NEARBY SUPERLUMINOUS SUPERNOVA
Matt Nicholl,Edo Berger,Stephen J. Smartt,Raffaella Margutti,Atish Kamble,Kate D. Alexander,Ting-Wan Chen,Cosimo Inserra,Iair Arcavi,Iair Arcavi,P. K. Blanchard,Régis Cartier,K. C. Chambers,M. Childress,Ryan Chornock,Philip S. Cowperthwaite,Maria R. Drout,H. Flewelling,Morgan Fraser,Avishay Gal-Yam,Lluís Galbany,Lluís Galbany,Jussi Harmanen,Thomas W.-S. Holoien,Griffin Hosseinzadeh,Griffin Hosseinzadeh,Dale Andrew Howell,Dale Andrew Howell,Mark E. Huber,Anders Jerkstrand,Erkki Kankare,Christopher S. Kochanek,Zhong-Yi Lin,Ragnhild Lunnan,Eugene A. Magnier,Kate Maguire,Curtis McCully,Curtis McCully,Michael McDonald,Brian D. Metzger,Dan Milisavljevic,Achintya Mitra,Achintya Mitra,T. M. Reynolds,J. Saario,Benjamin J. Shappee,K. W. Smith,Stefano Valenti,Stefano Valenti,V. A. Villar,Christopher Waters,David Young +51 more
TL;DR: In this paper, the authors present observations of SN 2015bn, a Type I superluminous supernova (SLSN) at redshift z = 0.1136, and derive physical properties including the bolometric luminosity and non-monotonic temperature and radial evolution.
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