1995A&A...297L..21W

Query : 1995A&A...297L..21W

1995A&A...297L..21W - Astronomy and Astrophysics, volume 297L21-24 (1995/5-2)

The detection of an unidentified variable gamma-ray source by COMPTEL.

WILLIAMS O.R., MUCH R., BENNETT K., BLOEMEN H., COLLMAR W., HERMSEN W., LICHTI G.G., McCONNELL M., RYAN J., SCHOENFELDER V., STEINLE H. and WINKLER C.

Abstract (from CDS):

We report the detection of an unidentified, high galactic latitude, γ-ray source (GRO J1753+57) by the COMPTEL instrument onboard the Compton Gamma-ray Observatory. The source was clearly detected during observations in November 1992 and had a flux in the 1-3MeV band of approximately half that of the Crab. All other observations of this region by COMPTEL only yield upper limits, or marginal detections, showing that this source is highly variable on a timescale of weeks. Possible counterparts are discussed.

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Journal keyword(s): gamma rays: observations

Simbad objects: 21

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Number of rows : 21
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRO J0516-609 gam 05 16 -60.9           ~ 22 0
2 Z 232-3 Sy1 05 54 53.6080860768 +46 26 21.624853488   15.37 14.62     ~ 563 3
3 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
4 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
5 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
6 2E 1726.0+5958 BLL 17 26 40.5030834432 +59 55 50.233012104   20.82 20.24 18.2   ~ 12 1
7 V* GR Dra LP* 17 28 39.4394970480 +59 02 07.253490948   8.84 8.26     G0 35 0
8 NGC 6394 Sy2 17 30 21.4214207088 +59 38 23.604551520   15.27       ~ 106 1
9 NGC 6418 Sy2 17 38 09.3036957600 +58 42 53.651180340   17.83 16.84     ~ 42 1
10 HD 160934 Er* 17 38 39.6170537492 +61 14 16.102424643   11.34 10.15   8.99 K7Ve 107 0
11 4C 51.37 Bla 17 40 36.97784792 +52 11 43.4073694   18.16 18.70 16.73   ~ 441 1
12 2E 3940 Sy1 17 42 51.5939437344 +61 45 54.562645584   17.88 17.74     ~ 30 1
13 NGC 6454 AGN 17 44 56.60706225 +55 42 17.1610560   13.0 13.5     ~ 83 1
14 GRO J1753+57 gam 17 52.0 +57 10           ~ 7 0
15 1H 1801+579 * 18 02 17 +57 58.3           A3 4 0
16 H 1811+540 X 18 12 +54.0           ~ 1 0
17 HD 234594 * 18 13 47.1625751568 +53 41 10.086778644   10.26 8.76     K5 8 0
18 2MASS J18181039+5343460 Sy1 18 18 10.3936390680 +53 43 45.979759992   15.2       ~ 19 0
19 BD+81 628 PM* 18 23 15.4827319560 +81 13 14.461725612       9.3   G5 16 0
20 2E 1823.3+5649 X 18 24 11.1 +56 51 16           ~ 3 0
21 PSR J1836+5925 Psr 18 36 13.661 +59 25 29.77           ~ 153 0

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