Very high energy gamma rays from PKS 2155-304

被引：184

作者：

Chadwick, PM ^{[1
]}

Lyons, K ^{[1
]}

McComb, TJL ^{[1
]}

Orford, KJ ^{[1
]}

Osborne, JL ^{[1
]}

Rayner, SM ^{[1
]}

Shaw, SE ^{[1
]}

Turver, KE ^{[1
]}

Wieczorek, GJ ^{[1
]}

机构：

[1] Univ Durham, Sci Labs, Dept Phys, Durham DH1 3LE, England

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 513卷 / 01期

关键词：

BL Lacertae objects : individual (PKS 2155-304); galaxies : active; gamma rays : observations;

D O I：

10.1086/306862

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The close X-ray-selected BL Lac PKS 2155-304 has been observed using the University of Durham Mark 6 very high energy (VHE) gamma-ray telescope during 1996 September/October/November and 1997 October/November, VHE gamma rays with energy more than 300 GeV were detected from this object with a time-averaged integral flux of (4.2 +/- 0.7(stat) +/- 2.0(sys)) x 10(-11) cm(-2) s(-1). There is evidence for VHE gamma-ray emission during our observations in 1996 September and 1997 October/November, with the strongest emission being detected in 1997 November, when the object was producing the largest flux ever recorded in high-energy X-rays and it was detected as a source of gamma rays of energy greater than 100 MeV. The VHE and X-ray fluxes show evidence of a correlation.

引用

页码：161 / 167

页数：7

共 44 条

[1]

ARMSTRONG P, 1999, IN PRESS EXP ASTRON

[2]

BRINKMANN W, 1994, ASTRON ASTROPHYS, V288, P433

[3] Discovery of gamma-ray emission above 350 GeV from the BL Lacertae object 1ES 2344+514 [J].

Catanese, M ;

Akerlof, CW ;

Badran, HM ;

Biller, SD ;

Bond, IH ;

Boyle, PJ ;

Bradbury, SM ;

Buckley, JH ;

Burdett, AM ;

Gordo, JB ;

Carter-Lewis, DA ;

Cawley, MF ;

Connaughton, V ;

Fegan, DJ ;

Finley, JP ;

Gaidos, JA ;

Hall, T ;

Hillas, AM ;

Krennrich, F ;

Lamb, RC ;

Lessard, RW ;

Masterson, C ;

McEnery, JE ;

Mohanty, G ;

Quinn, J ;

Rodgers, AJ ;

Rose, HJ ;

Samuelson, FW ;

Schubnell, MS ;

Sembroski, GH ;

Srinivasan, R ;

Weekes, TC ;

Wilson, CW ;

Zweerink, J .

ASTROPHYSICAL JOURNAL, 1998, 501 (02) :616-623

[4] Multiwavelength observations of a flare from Markarian 501 [J].

Catanese, M ;

Bradbury, SM ;

Breslin, AC ;

Buckley, JH ;

CarterLewis, DA ;

Cawley, MF ;

Dermer, CD ;

Fegan, DJ ;

Finley, JP ;

Gaidos, JA ;

Hillas, AM ;

Johnson, WN ;

Krennrich, F ;

Lamb, RC ;

Lessard, RW ;

Macomb, DJ ;

McEnery, JE ;

Moriarty, P ;

Quinn, J ;

Rodgers, AJ ;

Rose, HJ ;

Samuelson, FW ;

Sembroski, GH ;

Srinivasan, R ;

Weekes, TC ;

Zweerink, J .

ASTROPHYSICAL JOURNAL, 1997, 487 (02) :L143-L146

[5]

CATANESE M, 1997, P 25 INT COSM RAY C, V3, P277

[6]

CAWLEY MF, 1993, MAJOR ATMOSPHERIC CE, V2, P176

[7] Centaurus X-3: A source of high-energy gamma rays [J].

Chadwick, PM ;

Dickinson, MR ;

Dipper, NA ;

Kendall, TR ;

McComb, TJL ;

Orford, KJ ;

Osborne, JL ;

Rayner, SM ;

Roberts, ID ;

Shaw, SE ;

Turver, KE .

ASTROPHYSICAL JOURNAL, 1998, 503 (01) :391-395

[8] TeV gamma rays from PSR 1706-44 [J].

Chadwick, PM ;

Dickinson, MR ;

Dipper, NA ;

Holder, J ;

Kendall, TR ;

McComb, TJL ;

Orford, KJ ;

Osborne, JL ;

Rayner, SM ;

Roberts, ID ;

Shaw, SE ;

Turver, KE .

ASTROPARTICLE PHYSICS, 1998, 9 (02) :131-136

[9]

CHADWICK PM, 1999, UNPUB J PHYS G

[10]

CHIAPETTI L, 1997, 6776 IAU

← 1 2 3 4 5 →