Searches for fast radio transients

被引：242
作者：
Cordes, JM [1 ]
McLaughlin, MA
机构：
[1] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA
[2] Cornell Univ, NAIC, Ithaca, NY 14853 USA
[3] Univ Manchester, Jodrell Bank Observ, Macclesfield SK11 9DL, Cheshire, England
来源：
ASTROPHYSICAL JOURNAL | 2003年 / 596卷 / 02期
关键词：
extraterrestrial intelligence; gamma rays : bursts; pulsars : general; radio continuum : general;
D O I：
10.1086/378231
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We discuss optimal detection of fast radio transients from astrophysical objects while taking into account the effects of propagation through intervening ionized media, including dispersion, scattering, and scintillation. Our analysis applies to the giant-pulse phenomenon exhibited by some pulsars, for which we show examples, and to radio pulses from other astrophysical sources, such as prompt radio emission from gamma-ray burst sources and modulated signals from extraterrestrial civilizations. We estimate scintillation parameters for extragalactic sources that take into account scattering both in the host galaxy and in foreground Galactic plasma.
引用
收藏
页码：1142 / 1154
页数：13
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