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Infrared flash from pair-rich GRB fireball
Zhuo, L; Dai, ZG; Lu, T
2003
发表期刊STELLAR ASTROPHYSICS - A TRIBUTE TO HELMUT A. ABT
卷号298页码:281-283
摘要Gamma-ray bursts (GRBs) are believed to originate from ultra-relativistic fireballs, with initial Lorentz factor eta similar to10(2) - 10(3). in order to avoid that the MeV photons are absorbed for e(+/-) production (Meszaros 2002). However very high energy photons may still suffer from gammagamma interaction. We show here that in a wide range of model parameters, the resulting pairs may dominate electrons associated with the fireball baryons. Because the pairs do not suffer from annihilation for an observed GRB, they would be carried into a reverse shock so that a shocked pair-rich fireball may produce a strong flash at lower frequencies, say, the IR band, in contrast with optical/UV emission from a pair-poor fireball. This may provide an explanation for the rarity of prompt optical detections. A rapid response to the GRB trigger at the IR band would detect such a strong flash.
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/17119
专题院士文集_陆埮
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Zhuo, L,Dai, ZG,Lu, T. Infrared flash from pair-rich GRB fireball[J]. STELLAR ASTROPHYSICS - A TRIBUTE TO HELMUT A. ABT,2003,298:281-283.
APA Zhuo, L,Dai, ZG,&Lu, T.(2003).Infrared flash from pair-rich GRB fireball.STELLAR ASTROPHYSICS - A TRIBUTE TO HELMUT A. ABT,298,281-283.
MLA Zhuo, L,et al."Infrared flash from pair-rich GRB fireball".STELLAR ASTROPHYSICS - A TRIBUTE TO HELMUT A. ABT 298(2003):281-283.
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