STACEE observations of Markarian 421 during an extended gamma-ray outburst

被引：21

作者：

Boone, LM ^{[1
]}

Hinton, JA

Bramel, D

Chae, E

Covault, CE

Fortin, P

Gingrich, DM

Hanna, DS

Mukherjee, R

Mueller, C

Ong, RA

Ragan, K

Scalzo, RA

Schuette, DR

Théoret, CG

Williams, DA

机构：

[1] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[2] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[3] Columbia Univ, Dept Phys, New York, NY 10027 USA

[4] Columbia Univ, Dept Astron, New York, NY 10027 USA

[5] Barnard Coll, New York, NY 10027 USA

[6] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA

[7] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[8] Univ Alberta, Ctr Subatom Res, Edmonton, AB T6G 2N5, Canada

[9] TRIUMF, Vancouver, BC V6T 2A3, Canada

[10] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 579卷 / 01期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

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

D O I：

10.1086/344815

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The active galaxy Markarian 421 underwent a substantial outburst in early 2001. Between January and May of that year, the STACEE detector was used to observe the source in gamma-rays between the energies of 50 and 500 GeV. These observations represent the lowest energy gamma-ray detection of this outburst by a ground-based experiment. Here we present results from these observations, which indicate an average integral gamma-ray flux of (8.0 +/- 0.7 +/- 1.5) x 10(-10) cm(-2) s(-1) above 140 GeV. We also present a light curve for Markarian 421 as observed by STACEE from March to May and compare our temporal, as well as spectral, measurements with those of other experiments.

引用

页码：L5 / L8

页数：4

共 27 条

[1] TeV gamma rays from BL Lac objects due to synchrotron radiation of extremely high energy protons [J].

Aharonian, FA .

NEW ASTRONOMY, 2000, 5 (07) :377-395

[2]

AHARONIAN FA, 2002, IN PRESS A A

[3]

BOERST HG, 2001, 7568 IAU

[4]

BOONE LM, 2002, THESIS U CALIFORNIA

[5] Very high energy gamma-ray astronomy [J].

Catanese, M ;

Weekes, TC .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1999, 111 (764) :1193-1222

[6] TIME-DEPENDENT MODELS OF MAGNETIZED PAIR PLASMAS [J].

COPPI, PS .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 258 (04) :657-683

[7] Simultaneous X-ray and gamma-ray observations of TeV blazars: Testing synchro-compton emission models and probing the infrared extragalactic background [J].

Coppi, PS ;

Aharonian, FA .

ASTROPHYSICAL JOURNAL, 1999, 521 (01) :L33-L36

[8]

COVAULT CE, 2001, P 27 INT COSM RAY C, V1, P2810

[9] Measurement of the Crab flux above 60 GeV with the Celeste Cerenkov telescope [J].

de Naurois, M ;

Holder, J ;

Bazer-Bachi, R ;

Begeret, H ;

Bruel, P ;

Cordier, A ;

Debiais, G ;

Dezalay, JP ;

Dumora, D ;

Durand, E ;

Eschstruth, P ;

Espigat, P ;

Fabre, B ;

Fleury, P ;

Hérault, N ;

Hrabovsky, M ;

Incerti, S ;

Le Gallou, R ;

Münz, F ;

Musquère, A ;

Olive, JF ;

Paré, E ;

Québert, J ;

Rannot, RC ;

Reposeur, T ;

Rob, L ;

Roy, P ;

Sako, T ;

Schovanek, P ;

Smith, DA ;

Snabre, P ;

Volte, A .

ASTROPHYSICAL JOURNAL, 2002, 566 (01) :343-357

[10]

DERMER CD, 1992, ASTRON ASTROPHYS, V256, pL27

← 1 2 3 →