COMPTEL observations of PKS 0208-512 from 1991 to 1998

被引：0

作者：

Williams, OR ^{[1
]}

Bennett, K ^{[1
]}

Collmar, W ^{[1
]}

Iyudin, AF ^{[1
]}

Schönfelder, V ^{[1
]}

Steinle, H ^{[1
]}

Bloemen, H ^{[1
]}

Hermsen, W ^{[1
]}

McConnell, M ^{[1
]}

Ryan, J ^{[1
]}

Stacy, G ^{[1
]}

机构：

[1] European Space Agcy, Estec, Div Astrophys, NL-2200 AG Noordwijk, Netherlands

来源：

EXPLORING THE GAMMA-RAY UNIVERSE | 2001年 / 459卷

关键词：

blazars; gamma-rays;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A systematic re-analysis of a observations with the blazar PKS 0208-512 in the COMPTEL field-of-view has been performed. Evidence for a possible spectral peak in the MeV band has been reported previously using data from two observations during May and June 1993. When excluding these observations, we clearly detect a low flux from PKS 0208-512 using the summed data from the remaining eighteen observations. It was also found that the detailed results with respect to the possible MeV peak depend on the range of measured photon scatter angles applied during the background estimation. The impact of this increase in the measurement uncertainties on the interpretation of the data are discussed.

引用

页码：357 / 360

页数：4

共 50 条

[21] COMPTEL observations of the quasar PKS 0528+134 during the first 3.5 years of the CGRO mission
Collmar, W
Bennett, K
Bloemen, H
Blom, JJ
Hermsen, W
Lichti, GG
Pohl, M
Ryan, J
Schonfelder, V
Stacy, JG
Steinle, H
Williams, OR
ASTRONOMY & ASTROPHYSICS, 1997, 328 (01) : 33 - 42
[22] COMPTEL observations of the blazar PKS 1622-297 during a gamma-ray high state in 1995
Zhang, S
Collmar, W
Schönfelder, V
Bloemen, H
Hermsen, W
Ryan, J
Bennett, K
Williams, OR
Reimer, O
EXPLORING THE GAMMA-RAY UNIVERSE, 2001, 459 : 361 - 364
[23] Observations of TeV emission from PKS 2005-489 and PKS 0548-322
Chadwick, PM
Lyons, K
McComb, TJL
Orford, KJ
Osborne, JL
Rayner, SM
Shaw, SE
Turver, KE
GEV-TEV GAMMA RAY ASTROPHYSICS WORKSHOP, 2000, 515 : 96 - 99
[24] 56CO γ-rays from SN1998BU:: COMPTEL upper limits
Plüschke, S
Georgii, R
Diehl, R
Collmar, W
Lichti, GG
Schönfelder, V
Bloemen, H
Hermsen, W
Bennett, K
McConnell, M
Ryan, J
EXPLORING THE GAMMA-RAY UNIVERSE, 2001, 459 : 87 - 90
[25] The galactic supernova rate from COMPTEL 44Ti γ-line observations
The, LS
Diehl, R
Hartmann, DH
Iyudin, AF
Leising, MD
Oberlack, U
FIFTH COMPTON SYMPOSIUM, 2000, 510 : 64 - 68
[26] COMPTEL upper limits for the 56Co γ-rays from SN1998bu
Georgii, R
Plüschke, S
Diehl, R
Collmar, W
Lichti, GG
Schönfelder, V
Bloemen, H
Knödlseder, J
McConnell, M
Ryan, J
Bennett, K
FIFTH COMPTON SYMPOSIUM, 2000, 510 : 49 - 53
[27] COMPTEL UPPER LIMITS ON GAMMA-RAY LINE EMISSION FROM SUPERNOVA 1991T
LICHTI, GG
BENNETT, K
DENHERDER, JW
DIEHL, R
MORRIS, D
RYAN, J
SCHONFELDER, V
STEINLE, H
STRONG, AW
WINKLER, C
ASTRONOMY & ASTROPHYSICS, 1994, 292 (02): : 569 - 579
[28] New observations on the bow fibula from Altenerding grave 512
Haas-Gebhard, Brigitte
von Looz, Gabriele
ARCHAOLOGISCHES KORRESPONDENZBLATT, 2009, 39 (04): : 579 - 588
[29] Parties and power structures in Ukraine from 1991 to 1998
Leitinger, R
EUROPE-ASIA STUDIES, 2000, 52 (06) : 1167 - 1168
[30] Parties and the power structure in the Ukraine from 1991 to 1998
Sasse, G
SLAVIC REVIEW, 2001, 60 (02) : 422 - 423

← 1 2 3 4 5 →