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1D and 2D supernova simulations for stars between 11 and 25 solar masses are presented, making use of the Prometheus/Vertex neutrino-hydrodynamics code, which employs a full spectral treatment of the neutrino transport. Multi-dimensional…

Astrophysics · Physics 2009-11-11 R. Buras , H. -Th. Janka , M. Rampp , K. Kifonidis

I present progenitor luminosities ($L$) for a sample of 112 Type II supernovae (SNe II), computed directly from progenitor photometry and the bolometric correction technique, or indirectly from empirical correlations between progenitor…

Solar and Stellar Astrophysics · Physics 2022-07-20 Ósmar Rodríguez

We present the results of a large grid of synthetic spectra and compare them to early spectroscopic observations of SN 1993W. This supernova was discovered close to its explosion date and at a recession velocity of 5400 km/s is located in…

Astrophysics · Physics 2009-11-07 E. Baron , Peter E. Nugent , David Branch , Peter H. Hauschildt , M. Turatto , E. Cappellaro

I use photometry and spectroscopy data for 24 Type II plateau supernovae to examine their observed and physical properties. This dataset shows that these objects encompass a wide range of ~5 mag in their plateau luminosities, their…

Astrophysics · Physics 2010-04-06 Mario Hamuy

We examine the nucleosynthesis in the innermost, neutrino-processed ejecta (a few $10^{-3}\,M_\odot$) of self-consistent, two-dimensional explosion models of core-collapse supernovae for six progenitor stars with different initial masses.…

Solar and Stellar Astrophysics · Physics 2018-01-10 Shinya Wanajo , Bernhard Müller , Hans-Thomas Janka , Alexander Heger

All Type IIn supernovae (SNe IIn) show narrow hydrogen emission lines in their spectra. Apart from this common feature, they demonstrate very broad diversity in brightness, duration, and morphology of their light curves, which indicates…

High Energy Astrophysical Phenomena · Physics 2022-08-03 Chunhui Li , Viktoriya Morozova

Producing stable $^{58}$Ni in Type Ia supernovae (SNe Ia) requires sufficiently high density conditions that are not predicted for all origin scenarios, so examining the distribution of $^{58}$Ni using the NIR [Ni II] 1.939 $\mu$m line may…

We use the light curve and spectral synthesis code JEKYLL to calculate a set of macroscopically mixed Type IIb supernova (SN) models, which are compared to both previously published and new late-phase observations of SN 2020acat. The models…

We present ultra-violet to mid-infrared observations of the long-lasting Type IIn supernova (SN) 2013L obtained by the Carnegie Supernova Project II (CSP-II). The spectra of SN 2013L are dominated by H emission features characterized by…

We present an optical photometric and spectroscopic analysis of the fast-declining hydrogen-rich Type II supernova (SN) 2019nyk. The light curve properties of SN 2019nyk align well with those of other fast-declining Type II SNe, such as SNe…

SNe II show great photometric and spectroscopic diversity which is attributed to the varied physical characteristics of their progenitor and explosion properties. In this study, the third of a series of papers where we analyse a sample of…

We present a comprehensive photometric and spectroscopic study of the Type IIP SN 2018is. The $V$-band luminosity and the expansion velocity at 50 days post-explosion are $-$15.1$\pm$0.2 mag (corrected for A$_V$=1.34 mag) and 1400 km…

We present optical photometry and spectroscopy of five type Ia supernovae discovered by the Nearby Supernova Factory selected to be spectroscopic analogues of the candidate super-Chandrasekhar-mass events SN 2003fg and SN 2007if. Their…

We present extensive radio monitoring of a type IIb supernova (SN IIb), SN 2016gkg during $t \sim$ 8$-$1429 days post explosion at frequencies $\nu \sim$ 0.33$-$25 GHz. The detailed radio light curves and spectra are broadly consistent with…

High Energy Astrophysical Phenomena · Physics 2022-08-17 A. J. Nayana , Poonam Chandra , Anoop Krishna , G. C. Anupama

We present the first photometric population study of double-peaked Type IIb supernovae (SNe IIb). SNe IIb are produced from the core-collapse of massive stars whose outermost Hydrogen layer has been partially stripped prior to explosion.…

High Energy Astrophysical Phenomena · Physics 2025-03-06 Adrian Crawford , Tyler A. Pritchard , Maryam Modjaz , Craig Pellegrino , Sahana Kumar , Raphael Baer-Way

We present extensive ultraviolet to optical photometric and optical to near-infrared (NIR) spectroscopic follow-up observations of the nearby intermediate-luminosity ($M_V = -16.81\pm0.19$~mag) Type Iax supernova (SN) 2024pxl in NGC 6384.…

High Energy Astrophysical Phenomena · Physics 2026-02-04 Mridweeka Singh , Lindsey A. Kwok , Saurabh W. Jha , R. Dastidar , Conor Larison , Alexei V. Filippenko , Jennifer E. Andrews , Moira Andrews , G. C. Anupama , Prasiddha Arunachalam , Katie Auchettl , Dominik BÁnhidi , Barnabas Barna , K. Azalee Bostroem , Thomas G. Brink , RÉgis Cartier , Ping Chen , Collin T. Christy , David A. Coulter , Sofia Covarrubias , Kyle W. Davis , Connor B. Dickinson , Yize Dong , Joseph Farah , Andreas FlÖrs , Ryan J. Foley , Noah Franz , Christoffer Fremling , LluÍs Galbany , Anjasha Gangopadhyay , Aarna Garg , Elinor L. Gates , Or Graur , Alexa C. Gordon , Daichi Hiramatsu , Emily Hoang , D. Andrew Howell , Brian Hsu , Joel Johansson , Arti Joshi , Lordrick A. Kahinga , Ravjit Kaur , Sahana Kumar , Piramon Kumnurdmanee , Hanindyo Kuncarayakti , Natalie Lebaron , C. Lidman , Chang Liu , Keiichi Maeda , Kate Maguire , Bailey Martin , Curtis Mccully , Darshana Mehta , Luca M. Menotti , Anne J. Metevier , A. A. Miller , Kuntal Misra , C. Tanner Murphey , Megan Newsome , Estefania Padilla Gonzalez , Kishore C. Patra , Jeniveve Pearson , Anthony L. Piro , Abigail Polin , Aravind P. Ravi , Armin Rest , Nabeel Rehemtulla , Nicolas Meza Retamal , O. M. Robinson , CÉsar Rojas-Bravo , Devendra K. Sahu , David J. Sand , Brian P. Schmidt , Steve Schulze , Michaela Schwab , Manisha Shrestha , Matthew R. Siebert , Sunil Simha , Nathan Smith , Jesper Sollerman , Shubham Srivastav , Bhagya M. Subrayan , TamÁs Szalai , Kirsty Taggart , Rishabh Singh Teja , Jacco H. Terwel , Samaporn Tinyanont , Stefano Valenti , JÓzsef VinkÓ , Aya L. Westerling , J. Craig Wheeler , Yi Yang , Weikang Zheng

SN 2012ec is a Type IIP supernova (SN) with a progenitor detection and comprehensive photospheric-phase observational coverage. Here, we present Very Large Telescope and PESSTO observations of this SN in the nebular phase. We model the…

Since the discovery of SN (supernova) 1987A, the number of Type II-peculiar SNe has grown, revealing a rich diversity in photometric and spectroscopic properties. In this study, using a single 15Msun low-metallicity progenitor that dies as…

Solar and Stellar Astrophysics · Physics 2018-12-20 Luc Dessart , D. John Hillier

Hydrogen-poor superluminous supernovae (SLSN-I) are a class of rare and energetic explosions discovered in untargeted transient surveys in the past decade. The progenitor stars and the physical mechanism behind their large radiated energies…

An optical photometric and spectroscopic analysis of the slowly-evolving Type IIn SN2007rt is presented, covering a duration of 481 days after discovery. Its earliest spectrum, taken approximately 100 days after the explosion epoch,…