The Tev gamma-ray spectrum of Markarian 421 during an intense flare

被引：41

作者：

Zweerink, JA

Akerlof, CW

Biller, SD

Boyle, P

Buckley, JH

Burdett, A

Gordo, JB

CarterLewis, DA

Catanese, M

Cawley, MF

Fegan, DJ

Finley, JP

Gaidos, JA

Hillas, AM

Krennrich, F

Lamb, RC

Lessard, RW

McEnery, JE

Mohanty, G

Quinn, J

Rodgers, AJ

Rose, HJ

Samuelson, FW

Schubnell, MS

Sembroski, G

Srinivasan, R

Weekes, TC

Wilson, C

机构：

[1] UNIV MICHIGAN,RANDALL LAB PHYS,ANN ARBOR,MI 48109

[2] UNIV LEEDS,DEPT PHYS & ASTRON,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND

[3] NATL UNIV IRELAND UNIV COLL DUBLIN,DEPT PHYS,DUBLIN 4,IRELAND

[4] HARVARD SMITHSONIAN CTR ASTROPHYS,FRED LAWRENCE WHIPPLE OBSERV,AMADO,AZ 85645

[5] ST PATRICKS COLL,DEPT PHYS,MAYNOOTH,KILDARE,IRELAND

[6] PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907

[7] CALTECH,SPACE RADIAT LAB,PASADENA,CA 91125

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 490卷 / 02期

基金：

美国国家航空航天局;

关键词：

BL Lacertae objects; individual (Markarian 421); gamma rays; observations;

D O I：

10.1086/311036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the gamma-ray spectrum of the BL Lacertae object, Markarian 421, above 500 GeV during its most intense recorded TeV flare, on 1996 May 7. The spectrum is well fitted by a power law with an exponent of -2.56 +/- 0.07 +/- 0.1 (statistical and systematic errors). The spectrum extends above 5 TeV with no evidence for a cutoff, favoring determinations of the extragalactic infrared energy density that do not produce a sharp cutoff at these energies.

引用

页码：L141 / L144

页数：4

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