Broadband Light Curve Characteristics of Two Prototypical Low-Luminosity Gamma-Ray Bursts

2008 ◽  
Author(s):  
Fu-Wen Zhang ◽  
Yong-Feng Huang ◽  
Zi-Gao Dai ◽  
Bing Zhang
Keyword(s):  
Light Curve ◽  
Gamma Ray ◽  
Gamma Ray Bursts

scholarly journals Luminous supernovae associated with ultra-long gamma-ray bursts from hydrogen-free progenitors extended by pulsational pair-instability

2020 ◽  
Vol 641 ◽  
pp. L10
Author(s):  
Takashi J. Moriya ◽  
Pablo Marchant ◽  
Sergei I. Blinnikov
Keyword(s):  
Light Curve ◽  
Energy Input ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Core Collapse ◽  
Decay Energy ◽  
Slow Cooling ◽  
Gamma Ray Burst ◽  
The Core ◽  
Optical Light Curve

We show that the luminous supernovae associated with ultra-long gamma-ray bursts can be related to the slow cooling from the explosions of hydrogen-free progenitors that are extended by pulsational pair-instability. We have recently shown that some rapidly-rotating hydrogen-free gamma-ray burst progenitors that experience pulsational pair-instability can keep an extended structure caused by pulsational pair-instability until the core collapse. These types of progenitors have large radii exceeding 10 R⊙ and they sometimes reach beyond 1000 R⊙ at the time of the core collapse. They are, therefore, promising progenitors of ultra-long gamma-ray bursts. Here, we perform light-curve modeling of the explosions of one extended hydrogen-free progenitor with a radius of 1962 R⊙. The progenitor mass is 50 M⊙ and 5 M⊙ exists in the extended envelope. We use the one-dimensional radiation hydrodynamics code STELLA in which the explosions are initiated artificially by setting given explosion energy and 56Ni mass. Thanks to the large progenitor radius, the ejecta experience slow cooling after the shock breakout and they become rapidly evolving (≲10 days), luminous (≳1043 erg s−1) supernovae in the optical even without energy input from the 56Ni nuclear decay when the explosion energy is more than 1052 erg. The 56Ni decay energy input can affect the light curves after the optical light-curve peak and make the light-curve decay slowly when the 56Ni mass is around 1 M⊙. They also have a fast photospheric velocity above 10 000 km s−1 and a hot photospheric temperature above 10 000 K at around the peak luminosity. We find that the rapid rise and luminous peak found in the optical light curve of SN 2011kl, which is associated with the ultra-long gamma-ray burst GRB 111209A, can be explained as the cooling phase of the extended progenitor. The subsequent slow light-curve decline can be related to the 56Ni decay energy input. The ultra-long gamma-ray burst progenitors we proposed recently can explain both the ultra-long gamma-ray burst duration and the accompanying supernova properties. When the gamma-ray burst jet is off-axis or choked, the luminous supernovae could be observed as fast blue optical transients without accompanying gamma-ray bursts.

Precursors of short gamma-ray bursts detected by the INTEGRAL observatory

2018 ◽  
Vol 27 (10) ◽  
pp. 1844013 ◽  
Author(s):  
Pavel Minaev ◽  
Alexei Pozanenko ◽  
Sergei Molkov
Keyword(s):  
Statistical Analysis ◽  
Light Curve ◽  
Relative Intensity ◽  
Gamma Ray ◽  
Convincing Evidence ◽  
Gamma Ray Bursts ◽  
Light Curves ◽  
Upper Limits ◽  
Short Grbs

We have analyzed the light curves of 527 short gamma-ray bursts (GRBs) registered by the SPI-ACS, SPI and IBIS/ISGRI experiments of INTEGRAL observatory totally to search for precursors. Both the light curves of each 527 individual burst and the averaged light curve of 372 brightest SPI-ACS bursts have been analyzed. In a few cases, we have found and investigated precursor candidates using SPI-ACS, SPI and IBIS/ISGRI of INTEGRAL, GBM and LAT of Fermi data. No convincing evidence for the existence of precursors of short GRBs has been found. A statistical analysis of the averaged light curve for the sample of brightest short bursts has revealed no regular precursor. Upper limits for the relative intensity of precursors have been estimated. We show that the fraction of short GRBs with precursors is less than 0.4% of all short bursts, detected by INTEGRAL.

Optical/UV afterglows: Swift UVOT overview

2007 ◽  
Vol 365 (1854) ◽  
pp. 1227-1234 ◽  
Author(s):  
Keith O Mason ◽  
Patricia Boyd ◽  
Mathew Page ◽  
Shashi Pandey ◽  
Pete Roming ◽  
...  
Keyword(s):  
Light Curve ◽  
Spectral Data ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Nearby Galaxy ◽  
Host Galaxies ◽  
Optical Telescope ◽  
X Ray ◽  
Diagnostic Power ◽  
Peculiar Case

The ultraviolet and optical telescope (UVOT) on Swift provides coverage of gamma-ray bursts and their afterglows in the 170–650 nm band, yielding multiwavelength data of considerable diagnostic power in conjunction with the Swift X-ray Telescope. The results from the first eighteen months of operation show a broad range of afterglow behaviour, with considerably more complexity in many bursts than would be expected from the simple fireball model for the explosion. We briefly illustrate the capabilities of UVOT for measuring the evolution of nearby supernovae by reference to the observations of GRB 060218, and discuss the peculiar case of GRB 060614, which apparently resides in a nearby galaxy but which did not show the expected supernova feature in its light curve due to radioactive nickel decay. We discuss how the combination of X-ray and UV/optical spectral data can be used to investigate the environment of GRB host galaxies.

A One-Dimensional Relativistic Shock Model for the Light Curve of Gamma-ray Bursts

2006 ◽  
Vol 6 (3) ◽  
pp. 323-330 ◽  
Author(s):  
Cheng-Yue Su ◽  
Yi-Ping Qin ◽  
Jun-Hui Fan ◽  
Zhang-Yu Han
Keyword(s):  
Light Curve ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Shock Model ◽  
One Dimensional ◽  
Relativistic Shock

scholarly journals Highly luminous supernovae associated with gamma-ray bursts

2019 ◽  
Vol 624 ◽  
pp. A143 ◽  
Author(s):  
D. A. Kann ◽  
P. Schady ◽  
F. Olivares E. ◽  
S. Klose ◽  
A. Rossi ◽  
...  
Keyword(s):  
Light Curve ◽  
Near Infrared ◽  
Gamma Ray ◽  
Spectral Characteristics ◽  
Gamma Ray Bursts ◽  
Large Samples ◽  
Central Engine ◽  
Prompt Emission ◽  
Lines Of Evidence ◽  
Infrared Data

Context. GRB 111209A, one of the longest gamma-ray bursts (GRBs) ever observed, is linked to SN 2011kl, which is the most luminous GRB supernova (SN) detected so far. Several lines of evidence indicate that this GRB-SN is powered by a magnetar central engine. Aims. We place SN 2011kl into the context of large samples of SNe, addressing in more detail the question of whether this GRB-SN could be radioactively powered, and whether it represents an extreme version of a GRB-SN or an underluminous superluminous SN (SLSN). Methods. We modelled SN 2011kl using SN 1998bw as a template and derived a bolometric light curve including near-infrared data. We compared the properties of SN 2011kl to literature results on stripped-envelope and SLSNe. Results. A comparison in the k, s context, i.e. comparing SN 2011kl to SN 1998bw templates in terms of luminosity and light-curve stretch, clearly shows SN 2011kl is the most luminous GRB-SN to date and is spectrally very dissimilar to other events because it is significantly bluer/hotter. Although SN 2011kl does not reach the classical luminosity threshold of SLSNe and evolves faster than any of these objects, it resembles SLSNe more than the classical GRB-associated broad-lined Type Ic SNe in several aspects. Conclusions. GRB 111209A was a very energetic event, both at early (prompt emission) and at very late (SN) times. We show in a companion publication that with the exception of the extreme duration, the GRB and afterglow parameters are in agreement with the known distributions for these parameters. SN 2011kl, on the other hand, is exceptional both in luminosity and spectral characteristics, indicating that GRB 111209A was likely not powered by a standard-model collapsar central engine, further supporting our earlier conclusions. Instead, it reveals the possibility of a direct link between GRBs and SLSNe.

scholarly journals Light-Curve Calculations of Supernovae from Fallback Gamma-Ray Bursts

2007 ◽  
Vol 662 (2) ◽  
pp. L55-L58 ◽  
Author(s):  
Chris L. Fryer ◽  
Aimee L. Hungerford ◽  
Patrick A. Young
Keyword(s):  
Light Curve ◽  
Gamma Ray ◽  
Gamma Ray Bursts

scholarly journals Identifying Subclasses of Long Gamma-Ray Bursts with Cumulative Light-Curve Morphology of Prompt Emissions

2013 ◽  
Vol 65 (1) ◽  
pp. 3 ◽  
Author(s):  
Ryo Tsutsui ◽  
Takashi Nakamura ◽  
Daisuke Yonetoku ◽  
Keitaro Takahashi ◽  
Yoshiyuki Morihara
Keyword(s):  
Light Curve ◽  
Gamma Ray ◽  
Gamma Ray Bursts

scholarly journals The X-ray light curve of gamma-ray bursts: clues to the central engine

2012 ◽  
Vol 539 ◽  
pp. A3 ◽  
Author(s):  
M. G. Bernardini ◽  
R. Margutti ◽  
J. Mao ◽  
E. Zaninoni ◽  
G. Chincarini
Keyword(s):  
Light Curve ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
X Ray ◽  
Central Engine

Mechanism of light curve variability in the gamma ray bursts

2007 ◽  
pp. 173-177
Author(s):  
Saša Simić ◽  
Luka Č. Popović ◽  
Michael I. Andersen ◽  
Lise Christensen
Keyword(s):  
Light Curve ◽  
Gamma Ray ◽  
Gamma Ray Bursts

scholarly journals Plerion model of the X-ray plateau in short gamma-ray bursts

2019 ◽  
Vol 487 (4) ◽  
pp. 5010-5018 ◽  
Author(s):  
L C Strang ◽  
A Melatos
Keyword(s):  
Light Curve ◽  
Supernova Remnants ◽  
Gamma Ray ◽  
Electron Energy Spectrum ◽  
Gamma Ray Bursts ◽  
Time Dependent ◽  
Core Collapse ◽  
X Ray ◽  
Surface Magnetic Field ◽  
Core Collapse Supernova

Abstract Many short gamma-ray bursts (sGRBs) exhibit a prolonged plateau in the X-ray light curve following the main burst. It is shown that an X-ray plateau at the observed luminosity emerges naturally from a plerion-like model of the sGRB remnant, in which the magnetized, relativistic wind of a millisecond magnetar injects shock-accelerated electrons into a cavity confined by the sGRB blast wave. A geometry-dependent fraction of the plerionic radiation is also intercepted and reprocessed by the optically thick merger ejecta. The relative contributions of the plerion and ejecta to the composite X-ray light curve are estimated approximately with the aid of established ejecta models. The plerionic component of the electron energy spectrum is evolved under the action of time-dependent, power-law injection and adiabatic and synchrotron cooling in order to calculate the X-ray light curve analytically. The model yields an anticorrelation between the luminosity and duration of the plateau as well as a sudden cut-off in the X-ray flux, if the decelerating magnetar collapses to form a black hole. Both features are broadly consistent with the data and can be related to the surface magnetic field of the magnetar and its angular velocity at birth. The analogy with core-collapse supernova remnants is discussed briefly.

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