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We assess the variance of supernova(SN)-like explosions associated with the core collapse of rotating massive stars into a black hole-accretion disc system under changes in the progenitor structure. Our model of the central engine evolves…

高能天体物理现象 · 物理学 2024-11-08 Ludovica Crosato Menegazzi , Sho Fujibayashi , Masaru Shibata , Aurore Betranhandy , Koh Takahashi

Among type IIP supernovae there are a few events that resemble the well-studied supernova 1987A produced by the blue supergiant in the Large Magellanic Cloud. We study a peculiar supernova 2000cb and compare it with the supernova 1987A. We…

太阳与恒星天体物理 · 物理学 2015-05-28 V. P. Utrobin , N. N. Chugai

Several highly luminous Type Ia supernovae (SNe Ia) have been discovered. Their high luminosities are difficult to explain with the thermonuclear explosions of the Chandrasekhar-mass white dwarfs (WDs). In the present study, we estimate the…

高能天体物理现象 · 物理学 2012-08-31 Yasuomi Kamiya , Masaomi Tanaka , Ken'ichi Nomoto , Sergei I. Blinnikov , Elena I. Sorokina , Tomoharu Suzuki

The unusual Type IIP SN 2017gmr is revisited in order to pinpoint the origin of its anomalous features, including the peculiar light curve after about 100 days. The hydrodynamic modelling suggests the enormous explosion energy of about…

高能天体物理现象 · 物理学 2021-05-26 V. P. Utrobin , N. N. Chugai , J. E. Andrews , N. Smith , J. Jencson , D. A. Howell , J. Burke , D. Hiramatsu , C. McCully , K. A. Bostroem

Type-Ia supernovae (SN Ia) are powerful stellar explosions that provide important distance indicators in cosmology. There is significant tension between values of the Hubble constant (expansion rate of the universe) determined from SN Ia…

高能天体物理现象 · 物理学 2021-12-20 Alex Deibel , C. J. Horowitz , M. E. Caplan

In the favored progenitor scenario, Type Ia supernovae arise from a white dwarf accreting material from a non-degenerate companion star. Soon after the white dwarf explodes, the ejected supernova material engulfs the companion star;…

天体物理学 · 物理学 2009-11-10 Daniel Kasen , Peter Nugent , R. C. Thomas , Lifan Wang

Photometric and spectroscopic data of the energetic Type Ic supernova (SN) 2002ap are presented, and the properties of the SN are investigated through models of its spectral evolution and its light curve. The SN is spectroscopically similar…

Supernovae of Type IIn (narrow line) appear to be explosions that had strong mass loss before the event, so that the optical luminosity is powered by the circumstellar interaction. If the mass loss region has an optical depth $>c/v_s$,…

高能天体物理现象 · 物理学 2015-06-15 Roger A. Chevalier

We present optical and ultraviolet (UV) observations of a luminous type Ia supernova (SN Ia) SN 2015bq characterized by the early flux excess. This SN reaches a B-band absolute magnitude at $M_B = -19.68 \pm 0.41$ mag and a peak bolometric…

高能天体物理现象 · 物理学 2022-01-19 Liping Li , Jujia Zhang , Benzhong Dai , Wenxiong Li , Xiaofeng Wang , Qian Zhai , Jinming Bai

Supernova (SN) 2009ig was discovered 17 hours after explosion by the Lick Observatory Supernova Search, promptly classified as a normal Type Ia SN (SN Ia), peaked at V = 13.5 mag, and was equatorial, making it one of the foremost supernovae…

Transient surveys have recently discovered a class of supernovae (SNe) with extremely rapidly declining light curves. These events are also often relatively faint, especially compared to Type Ia SNe. The common explanation for these events…

高能天体物理现象 · 物理学 2015-06-17 Io Kleiser , Daniel Kasen

We present a core-collapse supernova model for the extremely luminous Type Ic supernova 2007bi. By performing numerical calculations of hydrodynamics, nucleosynthesis, and radiation transport, we find that SN 2007bi is consistent with the…

高能天体物理现象 · 物理学 2010-06-22 Takashi Moriya , Nozomu Tominaga , Masaomi Tanaka , Keiichi Maeda , Ken'ichi Nomoto

Measurements of explosive nucleosynthesis yields in core-collapse supernovae provide tests for explosion models. We investigate constraints on explosive conditions derivable from measured amounts of nickel and iron after radioactive decays…

太阳与恒星天体物理 · 物理学 2015-07-15 A. Jerkstrand , F. X. Timmes , G. Magkotsios , S. A. Sim , C. Fransson , J. Spyromilio , A. Heger , B. Müller , J. Sollerman , S. J. Smartt

We investigate the possibility of a super-luminous Type Ic core-collapse supernovae producing a large amount of 56Ni. Very massive stars with a main-sequence mass larger than 100 Msun and a metallicity 0.001 < Z < 0.004 are expected to…

太阳与恒星天体物理 · 物理学 2015-06-18 Takashi Yoshida , Shinpei Okita , Hideyuki Umeda

SN2010ah, a very broad-lined type Ic SN discovered by the Palomar Transient Factory, was interesting because of its relatively high luminosity and the high velocity of the absorption lines, which was comparable to that of GRB/SNe,…

宇宙学与河外天体物理 · 物理学 2015-06-15 Paolo A. Mazzali , Emma S. Walker , Elena Pian , Masaomi Tanaka , Alessandra Corsi , Takashi Hattori , Avishay Gal-Yam

SN2006tf is the third most luminous SN discovered so far, after SN2005ap and SN2006gy. SN2006tf is valuable because it provides a link between two regimes: (1) luminous type IIn supernovae powered by emission directly from interaction with…

We present extensive photometric and spectroscopic observations of the peculiar Type Ia supernova (SN Ia) 2022vqz. It shares many similarities with the SN 2002es-like SNe Ia, such as low luminosity ($M_{B,\rm max}=-18.11\pm0.16$ mag) and…

The supernovae of Type Ibc are rare and the detailed characteristics of these explosions have been studied only for a few events. Unlike Type II SNe, the progenitors of Type Ibc have never been detected in pre-explosion images. So, to…

If a black hole formed in a core-collapse supernova is accreting material from the base of the envelope, the accretion luminosity could be observable in the supernova light curve. Here we continue the study of matter fall back onto a black…

天体物理学 · 物理学 2009-10-31 Shmuel Balberg , Luca Zampieri , Stuart L. Shapiro