2005A&A...434..459K


Query : 2005A&A...434..459K

2005A&A...434..459K - Astronomy and Astrophysics, volume 434, 459-467 (2005/5-1)

Observation of EGRET gamma-ray sources by an Extensive Air Shower experiment.

KHAKIAN GHOMI M., BAHMANABADI M. and SAMIMI J.

Abstract (from CDS):

Ultra-high-energy (E>100TeV) Extensive Air Showers (EASs) have been monitored for a period of five years (1997-2003), using a small array of scintillator detectors in Tehran, Iran. The data have been analyzed taking into account the dependence of source counts on zenith angle. During a calendar year different sources come into the field of view of the detector at varying zenith angles. Because of varying thickness of the overlaying atmosphere, the shower count rate is extremely dependent on zenith angle, which has been carefully analyzed over time (Bahmanabadi et al., 2002, Exp. Astron., 13, 39). High energy gamma-ray sources from the EGRET third catalogue where observed and the data were analyzed using an excess method. Upper limits were obtained for a number of EGRET sources, including 6 AGNs or probably AGNs and 4 unidentified sources.

Abstract Copyright:

Journal keyword(s): instrumentation: detectors - methods: data analysis - catalogs - gamma rays: observations

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 QSO B0235+1624 BLL 02 38 38.9300958576 +16 36 59.276150136   16.46 15.50 15.92   ~ 1450 2
2 GRO J0407+17 gam 04 07 +17.2           ~ 13 0
3 GRO J0421+15 gam 04 27 +13.6           ~ 17 1
4 7C 080602.89+522749.00 BLL 08 09 49.1868285744 +52 18 58.249938744   16.11 15.59 14.6   ~ 248 2
5 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2512 1
6 2EG J1332+8821 gam 13 08 +87.7           ~ 11 0
7 4C 10.45 QSO 16 08 46.2032041032 +10 29 07.779419592   18.5 18.0 18.03   ~ 353 1
8 3EG J1824+3441 gam 18 25 +34.7           ~ 11 0
9 QSO B2032+107 QSO 20 35 22.3335111432 +10 56 06.786328056   17.96 16.37 17.4   ~ 172 1
10 QSO B2209+236 QSO 22 12 05.9664991416 +23 55 40.543886604   19   19.69   ~ 202 1
11 NAME Gould Belt PoG ~ ~           ~ 797 1

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2022.05.22-00:33:11

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