DISCOVERY OF INTENSE GAMMA-RAY FLASHES OF ATMOSPHERIC ORIGIN

被引：648
|
作者：
FISHMAN, GJ
BHAT, PN
MALLOZZI, R
HORACK, JM
KOSHUT, T
KOUVELIOTOU, C
PENDLETON, GN
MEEGAN, CA
WILSON, RB
PACIESAS, WS
GOODMAN, SJ
CHRISTIAN, HJ
机构：
[1] NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,UNIV SPACE RES ASSOC,HUNTSVILLE,AL 35812
[2] UNIV ALABAMA,DEPT PHYS,HUNTSVILLE,AL 35899
来源：
SCIENCE | 1994年 / 264卷 / 5163期
关键词：
D O I：
10.1126/science.264.5163.1313
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Detectors aboard the Compton Gamma Ray Observatory have observed an unexplained terrestrial phenomenon: brief, intense flashes of gamma rays. These flashes must originate in the atmosphere at altitudes above at least 30 kilometers in order to escape atmospheric absorption and reach the orbiting detectors. At least a dozen such events have been detected over the past 2 years. The photon spectra from the events are very hard (peaking in the high-energy portion of the spectrum) and are consistent with bremsstrahlung emission from energetic (million-electron volt) electrons. The most likely origin of these high-energy electrons, although speculative at this time, is a rare type of high-altitude electrical discharge above thunderstorm regions.
引用
收藏
页码：1313 / 1316
页数：4
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