2010MNRAS.408..422S


Query : 2010MNRAS.408..422S

2010MNRAS.408..422S - Mon. Not. R. Astron. Soc., 408, 422-429 (2010/October-2)

Using the ROSAT catalogue to find counterparts for unidentified objects in the first Fermi/LAT catalogue.

STEPHEN J.B., BASSANI L., LANDI R., MALIZIA A., SGUERA V., BAZZANO A. and MASETTI N.

Abstract (from CDS):

There are a total of 1451 gamma-ray emitting objects in the Fermi Large Area Telescope First Source Catalogue. The point source location accuracy of typically a few arcmin has allowed the counterparts for many of these sources to be found at other wavelengths, but even so there are 630 which are described as having no plausible counterpart at 80 per cent confidence. In order to help identify the unknown objects, we have cross-correlated the positions of these sources with the ROSAT All Sky Survey Bright Source Catalogue. In this way, for Fermi sources which have a possible counterpart in soft X-rays, we can use the much smaller ROSAT error box to search for identifications. We find a strong correlation between the two samples and calculate that there are about 60 sources with a ROSAT counterpart. Using the ROSAT error boxes we provide tentative associations for half of them, demonstrate that the majority of these are either blazars or blazar candidates, and give evidence that most belong to the BL Lac class. Given that they are X-ray selected and most are high synchrotron peaked objects, which indicates the presence of high-energy electrons, these sources are also good candidates for TeV emission, and therefore good probes of the extragalactic background light.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): catalogues - surveys - gamma-rays: general

Simbad objects: 38

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Number of rows : 38
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 2FGL J0051.4-6241 BLL 00 51 16.68 -62 42 04.3 17.50 17.42 17.38     ~ 40 0
2 HE 0052-2511 WD? 00 54 46.7593944754 -24 55 29.219522094   18.3       DC? 6 0
3 3HSP J005446.7-245529 BLL 00 54 46.76 -24 55 29.0 17.06 16.85 16.78     ~ 38 0
4 2MASS J01310723+6120334 BLL 01 31 07.24 +61 20 33.5           ~ 39 1
5 2MASS J01375047+5814112 BLL 01 37 50.4768015493 +58 14 11.325812306           ~ 40 2
6 PSR B0136+57 Psr 01 39 19.744 +58 14 31.73     13.41     ~ 141 0
7 6dFGS gJ022314.3-111738 BLL 02 23 14.2529523752 -11 17 38.471735746   19.02   18.46   ~ 31 0
8 4FGL J0506.9-5435 BLL 05 06 57.8140 -54 35 03.796 17.60 17.25 17.14     ~ 47 0
9 WISEA J060408.61-481725.1 BLL 06 04 09.40 -48 17 26.1 17.96 17.91 17.79     ~ 35 0
10 87GB 064555.8+152016 BLL 06 48 47.6489790744 +15 16 24.797273299       16.2   ~ 67 0
11 1FGL J0838.6-2828 Psr 08 38 30.15 -28 25 55.5           ~ 31 0
12 RX J0838.7-2827 CV* 08 38 43.3523501979 -28 27 01.137928294           ~ 11 0
13 HD 74208 PM* 08 41 21.3066800067 -35 57 15.453993365   8.28 7.91     F2V 12 0
14 4FGL J0841.3-3554 BLL 08 41 21.6331 -35 55 05.967           ~ 29 1
15 4FGL J0848.7+0508 Bz? 08 48 39.60 +05 06 18.0           ~ 14 0
16 XSS J12270-4859 LXB 12 27 58.7475950389 -48 53 42.826034125           ~ 218 0
17 2FGL J1304.3-4353 BLL 13 04 21.0058121281 -43 53 10.200297624 16.09 15.84 15.71     ~ 54 0
18 RX J130739.6-425939 BLL 13 07 37.9837457852 -42 59 38.987357236 16.39 16.10 15.92 15.80 14.59 ~ 48 0
19 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4110 3
20 4FGL J1353.6-6640 BL? 13 53 40.17 -66 39 57.9           ~ 26 0
21 2FGL J1419.4+7730 BLL 14 19 00.5 +77 32 27           ~ 33 0
22 1FGL J1544.5-1127 Psr 15 44 14.33 -11 24 42.0           ~ 44 0
23 1RXS J154439.4-112820 X 15 44 39.4 -11 28 20           ~ 21 0
24 2FGL J1553.5-3116 BLL 15 53 33.5451590109 -31 18 31.424450036       15.7   ~ 36 0
25 4FGL J1643.5-0646 BLL 16 43 28.9224841208 -06 46 19.763076555           ~ 31 0
26 2E 4061 BLL 18 23 38.58 -34 54 12.0           ~ 36 0
27 2MASS J18414705+3218389 BLL 18 41 47.0423857944 +32 18 39.145743164           ~ 37 0
28 W 49b SNR 19 11 09.000 +09 06 24.00           ~ 415 1
29 87GB 192614.4+614823 BLL 19 26 49.8916732993 +61 54 42.345449963           ~ 35 1
30 2FGL J1933.3+0722 BLL 19 33 20.30 +07 26 21.9           ~ 26 0
31 GB6 B1940+1026 Rad 19 42 47.30 +10 33 31.0           ~ 1 0
32 4FGL J1942.7+1033 BLL 19 42 47.4841088474 +10 33 27.102252397           ~ 39 1
33 2MASS J20420604+2426523 BLL 20 42 06.0490487702 +24 26 52.339916743           ~ 33 0
34 4C 49.35 BLL 20 56 42.73987 +49 40 06.6010           ~ 55 1
35 4FGL J2146.5-1344 AGN 21 46 37.01 -13 43 59.9           ~ 29 0
36 4FGL J2322.8-4916 BLL 23 22 54.42 -49 16 30.1           ~ 29 0
37 APMUKS (BJ) B232010.42-493502.4 AGN 23 22 57.22 -49 18 33.9           ~ 2 0
38 4FGL J2329.2+3755 AGN 23 29 14.2673278518 +37 54 14.482792004           ~ 37 1

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2021.08.02-14:12:02

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