Gamma-ray variability of the BL Lacertae object markarian 421

被引：121

作者：

Buckley, JH

Akerlof, CW

Biller, S

CarterLewis, DA

Catanese, M

Cawley, MF

Connaughton, V

Fegan, DJ

Finley, JP

Gaidos, J

Hillas, AM

Kartje, JF

Konigl, A

Krennrich, F

Lamb, RC

Lessard, R

Macomb, DJ

Mattox, JR

McEnery, JE

Mohanty, G

Quinn, J

Rodgers, AJ

Rose, HJ

Schubnel, MS

Sembroski, GL

Smith, PS

Weekes, TC

Wilson, C

Zweerink, J

机构：

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

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

[3] IOWA STATE UNIV,DEPT PHYS & ASTRON,AMES,IA 50011

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

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

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

[7] UNIV CHICAGO,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637

[8] NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771

[9] UNIV SPACE RES ASSOC,ASTROPHYS PROGRAM,GREENBELT,MD

[10] UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742

[11] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 472卷 / 01期

基金：

美国国家航空航天局;

关键词：

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

D O I：

10.1086/310352

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the gamma-ray variability of Mrk 421 at E(gamma) > 300 GeV during the 1995 season, and concentrate on the results of an intense multiwavelength observing campaign in the period April 20 to May 5, which included > 100 MeV gamma-ray, X-ray, extreme-ultraviolet, optical, and radio observations, some of which show evidence for correlated behavior. Rapid variations in the TeV gamma-ray light curve with doubling and decay times of less than or similar to 1 day require a compact emission region and significant Doppler boosting. The TeV data reveal that the gamma-ray emission is best characterized by a succession of rapid flares with a relatively low baseline level of steady emission.

引用

页码：L9 / L12

页数：4

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