Gravitational Waves and gamma -Ray Bursts
Gravitational Waves and gamma -Ray Bursts
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DOI：
10.1086/187083
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发表时间：
1993-05
期刊：
影响因子：
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通讯作者：
C. Kochanek;T. Piran
中科院分区：
文献类型：
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作者：
C. Kochanek;T. Piran
如果GRO探测到的伽马射线暴源是在宇宙学距离上的合并双星，那么应该有一个重合的引力辐射信号。利用伽玛暴率，我们预测的引力辐射探测率作为在地球上的引力波应变的函数。这种预测速率的方法避免了目前估计中的巨大统计不确定性，目前的估计是基于到目前为止在银河系中发现的三个包含中子星的中子星星双星。最明亮的伽马射线暴应该伴随着LIGO或VIRGO可探测到的引力脉冲，通过使用这些暴作为LIGO/VIRGO的触发器，它们的灵敏度可以提高50%，探测率提高3倍。LIGO/VIRGO必须达到10（sup-20.7）h（sub 0）的应变灵敏度才能检测到每十年一次的爆发，如果在应变灵敏度为10（sup-20.6）h（sub 0）的情况下未能以每年一次的速度找到巧合，将排除二元假设。如果它们被探测为引力波源，伽马射线和引力波之间的时间延迟将有助于确定爆发机制，而引力波的偏振将有助于确定爆发几何形状。
If the gamma-ray burst sources detected by GRO are coalescing binaries at cosmological distances there should be a coincident gravitational radiation signal. Using the GRBs rate we predict the gravitational radiation detection rate as a function of the gravitational wave strain at Earth. This method of predicting the rate avoids the large statistical uncertainties in the current estimates that are based on the three neutron star binaries containing pulsars found, so far, in the Galaxy. The brightest gamma-ray bursts should be accompanied by a gravitational pulse detectable by LIGO or VIRGO, and by using the bursts as triggers for LIGO/VIRGO their sensitivity can be improved by 50% and the detection rate increases by a factor of 3. LIGO/VIRGO must reach a strain sensitivity of 10(sup-20.7)h(sub 0) to detect one burst per decade, and a failure to find coincidences at a rate of one per year with a strain sensitivity of 10(sup -20.6)h(sub 0) will rule out the binary hypothesis. If they are detected as gravitational wave sources, the time delay between the gamma-rays and the gravitational waves will help to determine the burst mechanism, and the polarization of the gravitational waves will help to determine the burst geometry.