EGRET DETECTION OF THE BLAZAR PKS-0420-014

被引：12

作者：

RADECKE, HD

BERTSCH, DL

DINGUS, BL

FICHTEL, CE

HARTMAN, RC

HUNTER, SD

KANBACH, G

KNIFFEN, DA

LIN, YC

MATTOX, JR

MAYERHASSELWANDER, HA

MICHELSON, PF

VONMONTIGNY, C

NOLAN, PL

SCHNEID, E

THOMPSON, DJ

机构：

[1] NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771

[2] STANFORD UNIV,HANSEN EXPTL PHYS LAB,STANFORD,CA 94305

[3] GRUMMAN AEROSP CORP,BETHPAGE,NY 11714

[4] NASA,GODDARD SPACE FLIGHT CTR,CSC,COMPTON OBSERV SCI SUPPORT CTR,ASTRON PROGRAMS,GREENBELT,MD 20771

[5] HAMPDEN SYDNEY COLL,HAMPDEN SYDNEY,VA 23943

[6] NASA,GODDARD SPACE FLIGHT CTR,UNIV SPACE RES ASSOC,GREENBELT,MD 20771

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 438卷 / 02期

关键词：

GAMMA RAYS; OBSERVATIONS; QUASARS; INDIVIDUAL; (PKS; 0420-014);

D O I：

10.1086/175109

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

During its full-sky survey, the EGRET high-energy instrument aboard the Compton Gamma-Ray Observatory detected gamma-ray emission in the energy range above 30 MeV from a source identified as the blazar PKS 0420-014. This object was observed during two separate viewing periods in 1992 February/March and May/June. An intensity decrease above 100 MeV of a factor of at least 1.5 from a maximum of (5.0 +/- 1.4) x 10(-7) photons cm(-2) s(-1) was observed during that time interval indicating extensive variability. The photon spectrum in the range between 30 and 10,000 MeV at the time of the maximum intensity is well represented by a power law with an exponent of -1.9 +/- 0.3. Some similarities with other EGRET detected blazars are briefly discussed.

引用

页码：659 / 662

页数：4

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