Fan, Yi-Zhong 2013 GRB 130603B的超大质量磁星模型

主要内容:
拟合了X和光学，除了kilonova的光学的点，其它的用磁星能量注入拟合。

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Title:		A Supramassive Magnetar Central Engine for GRB 130603B
Authors:		Fan, Yi-Zhong; Yu, Yun-Wei; Xu, Dong; Jin, Zhi-Ping; Wu, Xue-Feng; Wei, Da-Ming; Zhang, Bing
Affiliation:		AA(Key Laboratory of dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Science, Nanjing 210008, China yzfan@pmo.ac.cn), AB(Institute of Astrophysics, Central China Normal University, Wuhan 430079, China zhang@physics.unlv.edu), AC(Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark), AD(Key Laboratory of dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Science, Nanjing 210008, China), AE(Chinese Center for Antarctic Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China), AF(Key Laboratory of dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Science, Nanjing 210008, China), AG(Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154, USA)
Publication:		The Astrophysical Journal Letters, Volume 779, Issue 2, article id. L25, 4 pp. (2013). (ApJL Homepage)
Publication Date:		12/2013
Origin:		IOP
Astronomy Keywords:		gamma rays: general, radiation mechanisms: non-thermal
DOI:		10.1088/2041-8205/779/2/L25
Bibliographic Code:		2013ApJ...779L..25F

Abstract

We show that the peculiar early optical emission and, in particular, the X-ray afterglow emission of the short-duration burst GRB 130603B can be explained by continuous energy injection into the blastwave from a supramassive magnetar central engine. The observed energetics and temporal/spectral properties of the late infrared bump (i.e., the "kilonova") are also found to be consistent with emission from the ejecta launched during a neutron star (NS)-NS merger and powered by a magnetar central engine. The isotropic-equivalent kinetic energies of both the gamma-ray burst (GRB) blastwave and the kilonova are approximately E_k ~ 10⁵¹ erg, consistent with being powered by a near-isotropic magnetar wind. However, this relatively small value requires that most of the initial rotational energy of the magnetar (~a few × 10⁵² erg) is carried away by gravitational wave radiation. Our results suggest that (1) the progenitor of GRB 130603B was a NS-NS binary system, the merger product of which would have been a supramassive NS that lasted for about ~1000 s (2) the equation of state of the nuclear matter should be stiff enough to allow the survival of a long-lived supramassive NS; thus this suggested that the detection of the bright electromagnetic counterparts of gravitational wave triggers without short GRB associations is promising in the upcoming Advanced LIGO/VIRGO era.

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