EGRET observations of the 1993 March gamma-ray flare from PKS 0528+134

被引:44
作者
Mukherjee, R
Dingus, BL
Gear, WK
Hartman, RC
Hunter, SD
Marscher, AP
Moore, EM
Pohl, M
Robson, EI
Sreekumar, P
Stevens, JA
Terasranta, H
Tornikoski, M
Travis, JP
Wagner, SJ
Zhang, YF
机构
[1] UNIV SPACE RES ASSOC, COLUMBIA, MD USA
[2] ROYAL OBSERV, EDINBURGH EH9 3HJ, MIDLOTHIAN, SCOTLAND
[3] BOSTON UNIV, DEPT ASTRON, BOSTON, MA 02215 USA
[4] MAX PLANCK INST EXTRATERR PHYS, D-37075 GARCHING, GERMANY
[5] JOINT ASTRON CTR, HILO, HI 96720 USA
[6] METSAHOVI RADIO RES STN, SF-02540 KYLMALA, FINLAND
[7] LANDESSTERNWARTE KONIGSTUHL, D-69117 HEIDELBERG, GERMANY
关键词
gamma rays; observations; quasars; individual; (PKS; 0528; 134);
D O I
10.1086/177914
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
EGRET observation of PKS 0528 + 134 during the 1993 March flare in gamma-rays is presented here. During the flare gamma-rays were detected at a level approximately three times greater than the observed intensity in earlier observations. Spectra of the source during the flare, as well as during the nonflaring state are presented. The flux history of PKS 0528 + 134 as observed from the start of the Compton Gamma Ray Observatory (CGRO) mission up to the end of Phase 3 (1993 October) is given. Multiwavelength observations of PKS 0528+134 during the flare are also presented. A detailed relativistic SSC jet model agrees well with the 1993 March Multiwavelength spectrum; the data, however, are insufficient to discriminate between this and other emission models.
引用
收藏
页码:831 / 838
页数:8
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