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The central engine of gamma-ray bursts (GRBs) remains an open and forefront topic in the era of multimessenger astrophysics. The X-ray plateaus appear in some GRB afterglows, which are widely considered to originate from the spindown of…

High Energy Astrophysical Phenomena · Physics 2021-12-08 Shu-Jin Hou , Shuang Du , Tong Liu , Hui-Jun Mu , Ren-Xin Xu

This manuscript presents a multilevel analysis of gamma-ray bursts (GRBs). We focus on the plateau phase, which is often observed in the light curves (LCs) of GRBs. We discuss its observational properties and then thoroughly examine…

High Energy Astrophysical Phenomena · Physics 2025-04-09 Aleksander Ł. Lenart , Maria G. Dainotti , Nikita Khatiya , Dhruv Bal , Dieter H. Hartmann , Nissim Fraija , Bing Zhang

Gamma-ray bursts (GRBs) are extremely high-energy events that can be observed at very high redshift. In addition to gamma rays, they can emit in X-ray, optical, and sometimes radio wavelengths. Here, following the approach in…

High Energy Astrophysical Phenomena · Physics 2022-12-07 M. G. Dainotti , D. Levine , D. Warren , N. Fraija , S. Sourav

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) afterglow emission can be observed from sub-TeV to radio wavelengths, though only 6.6\% of observed GRBs present radio afterglows. We examine GRB radio light curves (LCs) to look for the presence of radio plateaus,…

High Energy Astrophysical Phenomena · Physics 2022-02-02 Delina Levine , Maria Dainotti , Kevin J. Zvonarek , Nissim Fraija , Donald C. Warren , Poonam Chandra , Nicole Lloyd-Ronning

Many long-duration gamma-ray bursts (GRBs) were observed by {\it Swift}/XRT to have plateaus in their X-ray afterglow light curves. This plateau phase has been argued to be evidence for long-lasting activity of magnetar (ultra-strongly…

High Energy Astrophysical Phenomena · Physics 2014-01-09 S. X. Yi , Z. G. Dai , X. F. Wu , F. Y. Wang

The plateau phase in the radio afterglows has been observed in very few gamma-ray bursts (GRBs), and 27 radio light curves with plateau phase were acquired from the published literature in this article. We obtain the related parameters of…

High Energy Astrophysical Phenomena · Physics 2023-10-09 Xiao Tian , Jia-Lun Li , Shuang-Xi Yi , Yu-Peng Yang , Jian-Ping Hu , Yan-Kun Qu , Fa-Yin Wang

Based on X-ray afterglow observations from the Swift satellite, we construct a sample of 169 long gamma-ray bursts (LGRBs) exhibiting the canonical magnetar plateau signature, i.e., a plateau followed by a $t^{-2}$ decay. We derive the…

High Energy Astrophysical Phenomena · Physics 2026-05-15 Yu-Qi Zhou , Shuang-Xi Yi , Yu-Peng Yang , Yan-Kun Qu , Ning Gai , Yan-Ke Tang , Fa-Yin Wang

The origin of gamma-ray burst (GRB) X-ray plateau, especially the internal plateau, is still unclear, but it could be related to GRB's central engine of magnetar. It is generally believed that the spin-down power of the magnetar is injected…

High Energy Astrophysical Phenomena · Physics 2020-09-30 Shuang Du

Gamma-ray bursts (GRBs), which have been observed up to redshifts z approx 9.5 can be good probes of the early universe and have the potential of testing cosmological models. The analysis by Dainotti of GRB Swift afterglow lightcurves with…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Maria Giovanna Dainotti , Vahe' Petrosian , Jack Singal , Michal Ostrowski

The spin-down energy of millisecond magnetars has been invoked to explain X-ray afterglow observations of a significant fraction of short and long gamma-ray bursts. Here, we extend models previously introduced in the literature,…

High Energy Astrophysical Phenomena · Physics 2020-12-16 Nikhil Sarin , Paul D. Lasky , Gregory Ashton

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

The X-ray afterglow plateau emission observed in many Gamma-ray Bursts (GRBs) has been interpreted as either being fueled by fallback onto a newly formed black hole, or by the spin-down luminosity of an ultra-magnetized millisecond neutron…

High Energy Astrophysical Phenomena · Physics 2018-12-26 G. Stratta , M. G. Dainotti , S. Dall'Osso , X. Hernandez , G. De Cesare

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,…

Short gamma-ray bursts (GRBs) exhibiting a plateau phase provide valuable insights into the post-merger activity of their central engines. Although the physical origin of the plateau remains uncertain, the magnetar energy injection model…

High Energy Astrophysical Phenomena · Physics 2026-02-24 Chen Deng , Yong-Feng Huang , Abdusattar Kurban , Jin-Jun Geng , Fan Xu , Xiao-Fei Dong , Hao-Xuan Gao , En-Wei Liang , Liang Li

We analyze a sample of\textit{ Swift} gamma-ray bursts (GRBs) with extended emissions in $\gamma$-rays and/or X-ray plateaus that may be driven by magnetars. Multi-wavelength data and multi-standards have been adopted to investigate the…

High Energy Astrophysical Phenomena · Physics 2025-12-01 C. T. Hao , J. H. Jing , X. L. Han , H. R. Lan , W. C. Du , X. N. Liu , Z. B. Zhang , H. C. Liu , J. F. Wu , X. L. Xia

The X-ray afterglows of some gamma-ray bursts (GRBs) exhibit plateaus, which can be explained by the internal dissipation of a newborn millisecond magnetar wind. In the early phase of these newborn magnetars, the magnetic inclination angle…

High Energy Astrophysical Phenomena · Physics 2024-11-26 Biao Zhang , Shu-Qing Zhong , Long Li , Zi-Gao Dai

Gamma-ray bursts (GRBs), which have been observed up to redshifts $z \approx 9.5$ can be good probes of the early universe and have the potential of testing cosmological models. The analysis by Dainotti of GRB Swift afterglow lightcurves…

High Energy Astrophysical Phenomena · Physics 2013-07-30 Maria Giovanna Dainotti , Vahe' Petrosian , Jack Singal , Michal Ostrowski

Cosmological models and their corresponding parameters are widely debated because of the current discrepancy between the results of the Hubble constant, $H_{0}$, obtained by SNe Ia, and the Planck data from the Cosmic Microwave Background…

High Energy Astrophysical Phenomena · Physics 2022-10-12 M. G. Dainotti , A. Ł. Lenart , A. Chraya , G. Sarracino , S. Nagataki , N. Fraija , S. Capozziello , M. Bogdan

For gamma-ray bursts (GRBs) with a plateau phase in the X-ray afterglow, a so called $L-T-E$ correlation has been found which tightly connects the isotropic energy of the prompt GRB ($E_{\gamma,\rm{iso}}$) with the end time of the X-ray…

High Energy Astrophysical Phenomena · Physics 2021-10-26 Fan Xu , Chen-Han Tang , Jin-Jun Geng , Fa-Yin Wang , Yu-Yang Wang , Abudushataer Kuerban , Yong-Feng Huang
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