| Title | Evidence of X-Ray Plateaus Driven by the Magnetar Spindown Winds in Gamma-Ray Burst Afterglows |
| Authors | Hou, Shu-Jin Du, Shuang Liu, Tong Mu, Hui-Jun Xu, Ren-Xin |
| Affiliation | Nanyang Normal Univ, Dept Phys & Elect Engn, Nanyang 473061, Henan, Peoples R China Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China Wenzhou Univ, Coll Math & Phys, Wenzhou 325035, Zhejiang, Peoples R China Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China Zhengzhou Univ, Int Lab Quantum Funct Mat Henan, Zhengzhou 450001, Henan, Peoples R China Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| Keywords | NEUTRINO-DOMINATED ACCRETION LIGHT CURVES ENERGY INJECTION MODELS STARS LUMINOSITY JETS |
| Issue Date | Dec-2021 |
| Publisher | ASTROPHYSICAL JOURNAL |
| Abstract | The central engine of gamma-ray bursts (GRBs) remains an open and cutting-edge topic in the era of multimessenger astrophysics. X-ray plateaus appear in some GRB afterglows, which are widely considered to originate from the spindown of magnetars. According to the stable magnetar scenario of GRBs, an X-ray plateau and a decay phase similar to t(-2) should appear in X-ray afterglows. Meanwhile, the "normal" X-ray afterglow is produced by the external shock from a GRB fireball. We analyze the Neil Gehrels Swift GRB data, then find three gold samples that have an X-ray plateau and a decay phase similar to t(-2) superimposed on the jet-driven normal component. Based on these features of the lightcurves, we argue that the magnetars should be the central engines of these three GRBs. Future joint multimessenger observations might further test this possibility, which can then be beneficial to constrain GRB physics. |
| URI | http://hdl.handle.net/20.500.11897/629695 |
| ISSN | 0004-637X |
| DOI | 10.3847/1538-4357/ac2c74 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 核物理与核技术国家重点实验室 科维理天文与天体物理研究所 |
