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Related papers: A Study of the Gamma-Ray Burst Fundamental Plane

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Long gamma-ray bursts (GRBs) with a plateau phase in their X-ray afterglows obeys a three-dimensional (3D) relation (Dainotti et al. 2016), between the rest-frame time at the end of the plateau, Ta, its corresponding X-ray luminosity, La,…

A class of long Gamma-Ray Bursts (GRBs) presenting light curves with an extended plateau phase in their X-ray afterglows obeys a correlation between the rest frame end time of the plateau, $T_a$, and its corresponding X-ray luminosity,…

High Energy Astrophysical Phenomena · Physics 2017-02-15 Maria Giovanna Dainotti , Sergey Postnikov , Xavier Hernandez , Michał Ostrowski

A plateau phase in the X-ray afterglow is observed in a significant fraction of gamma-ray bursts (GRBs). Previously, it has been found that there exists a correlation among three key parameters concerning the plateau phase, i.e., the end…

High Energy Astrophysical Phenomena · Physics 2019-11-06 Chen-Han Tang , Yong-Feng Huang , Jin-Jun Geng , Zhi-Bin Zhang

Gamma-ray bursts (GRBs) are fascinating events due to their panchromatic nature. We study optical plateaus in GRB afterglows via an extended search into archival data. We comprehensively analyze all published GRBs with known redshifts and…

Gamma-Ray Bursts (GRBs) are the most explosive phenomena in the Universe after the Big Bang. A large fraction of GRB lightcurves (LCs) shows X-ray plateaus. We perform the most comprehensive analysis of all GRBs (with known and unknown…

When a massive star explodes as a Gamma Ray Burst information about this explosion is retained in the properties of the prompt and afterglow emission. We report on new relationships between the prompt and X-ray afterglow emission of…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Dirk Grupe , John A. Nousek , Peter Veres , Binbin Zhang , Neil Gehrels

A large fraction of Gamma-Ray Bursts (GRBs) lightcurves (LCs) shows X-ray plateaus. We analyze all GRBs with known redshifts presenting plateaus observed by \emph{The Neil Gehrels Swift Observatory} from its launch until August 2019. The…

High Energy Astrophysical Phenomena · Physics 2020-11-24 Maria Giovanna Dainotti , Aleksander Lenart , Giuseppe Sarracino , Shigehiro Nagataki , Salvatore Capozziello , Nissim Fraija

Gamma-Ray Bursts (GRBs) are fascinating events due to their panchromatic nature. Their afterglow emission is observed from sub-TeV energies to radio wavelengths. We investigate GRBs that present an optical plateau, leveraging on the…

High Energy Astrophysical Phenomena · Physics 2021-01-06 M. G. Dainotti , S. Livermore , D. A. Kann , L. Li , S. Oates , S. Yi , B. Zhang , B. Gendre , B. Cenko , N. Fraija

To reveal and understand astrophysical processes responsible for the Gamma Ray Burst (GRB) phenomenon, it is crucial to discover and understand relations between their observational properties. The presented study is performed in the GRB…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Maria Giovanna Dainotti , Michal Ostrowski , Richard Willingale

Gamma ray bursts (GRBs) have great advantages for their huge burst energies, luminosities and high redshifts in probing the Universe. A few interesting luminosity correlations of GRBs have been used to test cosmology models. Especially, for…

High Energy Astrophysical Phenomena · Physics 2015-05-27 M. Xu , Y. F. Huang

Gamma-ray burst (GRB) X-ray light curves exhibit a variety of complex temporal structures, such as flares and plateaus. The origin of flares seen in many GRB early afterglows is still uncertain. Here, we analyze a sample of 89 GRBs, 61 of…

High Energy Astrophysical Phenomena · Physics 2025-12-09 H. Dereli-Bégué , A. Pe'er , D. Bégué , F. Ryde , A. Gowri

The Neil Gehrels Swift observatory observe Gamma-Ray bursts (GRBs) plateaus in X-rays. We test the reliability of the closure relations through the fireball model when dealing with the GRB plateau emission. We analyze 455 X-ray lightcurves…

High Energy Astrophysical Phenomena · Physics 2021-07-07 M. G. Dainotti , A. Ł. Lenart , N. Fraija , S. Nagataki , D. C. Warren , B. De Simone , G. Srinivasaragavan , A. Mata

Gamma-Ray Bursts (GRBs) are interesting objects for testing the emission models in highly energetic regimes and are very promising standardizable candles, given their observability at high redshift (up to $z=9.4$) that allows the extension…

High Energy Astrophysical Phenomena · Physics 2023-11-28 Maria Giovanna Dainotti , Biagio De Simone

We present a comprehensive statistical analysis of Swift X-ray light-curves of Gamma-Ray Bursts (GRBs) collecting data from more than 650 GRBs discovered by Swift and other facilities. The unprecedented sample size allows us to constrain…

X-ray flashes (XRFs) and X-ray rich gamma-ray bursts (XRGRBs) share many observational characteristics with long duration GRBs, but the reason for which their prompt emission peaks at lower photon energies, $E_p$, is still under debate.…

Astrophysics · Physics 2009-11-10 Jonathan Granot , Enrico Ramirez-Ruiz , Rosalba Perna

The statistics of X-ray flares in the afterglow of gamma-ray bursts (GRBs) have been studied extensively without considering the possible different origins of each flare. By satisfying six observational criteria, we find a sample composed…

High Energy Astrophysical Phenomena · Physics 2018-02-07 Y. Wang , Y. Aimuratov , R. Moradi , M. Peresano , R. Ruffini , S. Shakeri

Most GRB X-ray afterglow light curves are characterised by a plateau, followed by a normal power-law decay interpreted as afterglow emission. Despite the numerous alternative interpretations, the origin of the plateau remains unclear. In…

High Energy Astrophysical Phenomena · Physics 2025-11-12 C. Guidorzi , R. Maccary , M. Maistrello , S. Kobayashi , M. Bulla , F. Frontera

We have performed a systematic study of Gamma-Ray Bursts (GRBs), which have various values in the peak energy of the ${\nu}F_{\nu}$ spectrum of the prompt emission, $E_{{\rm peak}}$, observed by \textsl{Swift}/BAT and \textsl{Fermi}/GBM,…

High Energy Astrophysical Phenomena · Physics 2020-02-12 Daisuke Katsukura , Takanori Sakamoto , Makoto S. Tashiro , Yukikatsu Terada

Correlation studies of prompt and afterglow emissions from gamma-ray bursts (GRBs) between different spectral bands has been difficult to do in the past because few bursts had comprehensive and intercomparable afterglow measurements. In…

We present a comprehensive statistical analysis of Swift X-ray light-curves of Gamma-Ray Bursts (GRBs), with more than 650 GRBs. Two questions drive this effort: (1) Does the X-ray emission retain any kind of memory of the prompt phase? (2)…

High Energy Astrophysical Phenomena · Physics 2019-08-14 Raffaella Margutti , E. Zaninoni , M. G. Bernardini , G. Chincarini
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