EARLY X-RAY AND OPTICAL AFTERGLOW OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS

被引：162

作者：

Zhang, Bing ^{[1
,2
,3
]}

机构：

[1] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

[2] Peking Univ, Dept Astron, Beijing 100871, Peoples R China

[3] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2013年 / 763卷 / 01期

基金：

美国国家科学基金会;

关键词：

gamma-ray burst: general; gravitational waves; MILLISECOND PULSARS; EXTENDED EMISSION; MAGNETIC-FIELDS; ACCELERATION; COUNTERPARTS; RADIATION; MODEL;

D O I：

10.1088/2041-8205/763/1/L22

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Double neutron star mergers are strong sources of gravitational waves. The upcoming advanced gravitational wave detectors are expected to make the first detection of gravitational wave bursts (GWBs) associated with these sources. Proposed electromagnetic counterparts of a GWB include a short gamma-ray burst, an optical macronova, and a long-lasting radio afterglow. Here we suggest that at least some GWBs could be followed by an early afterglow lasting for thousands of seconds, if the post-merger product is a highly magnetized, rapidly rotating, massive neutron star rather than a black hole. This afterglow is powered by dissipation of a proto-magnetar wind. The X-ray flux is estimated to be as bright as (10(-8)-10(-7)) erg s(-1) cm(-2). The optical flux is subject to large uncertainties but could be as bright as 17th magnitude in R band. We provide observational hints of such a scenario, and discuss the challenge and strategy to detect these signals.

引用

页数：4

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