2021ApJS..252...17B


Query : 2021ApJS..252...17B

2021ApJS..252...17B - Astrophys. J., Suppl. Ser., 252, 17-17 (2021/February-0)

Radio counterparts of gamma-ray sources in the Cygnus Region.

BENAGLIA P., ISHWARA-CHANDRA C.H., PAREDES J.M., INTEMA H.T., COLAZO M.E. and ISEQUILLA N.L.

Abstract (from CDS):

The view of the gamma-ray universe is being continuously expanded by space high-energy (HE) and ground-based very-high-energy (VHE) observatories. Yet, the angular resolution limitation still precludes a straightforward identification of these gamma-ray emitting sources. Radio observations are an effective tool for searching their possible counterparts at lower energies because the same population of relativistic electrons responsible for radio emission can also produce HE/VHE emission via inverse-Compton scattering. The Cygnus region is crowded by many gamma-ray sources, most of them remaining unidentified. In order to find possible counterparts to unidentified gamma-ray sources, we carried out a deep survey of the Cygnus region using the Giant Metrewave Radio Telescope at 610 and 325 MHz. We did a detailed search for counterparts in the error circle of HE/VHE sources. We report 36 radio sources found in the error ellipse of 15 HE sources, and 11 in those of VHE sources. Eight sources have a very steep radio spectral index α < -1.5, these are most likely to be pulsars and will be followed up for a periodicity search. Such a significant number of pulsar candidates within the error circle of HE/VHE sources prompts a fresh look at the energetics and efficacy of pulsars and pulsar wind nebulae in this context.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Supernova remnants - Pulsars - Gamma-ray sources - Radio continuum emission - Catalogs - Surveys

Nomenclature: Figs 3-15, Tables 3-4: [BIP2021] SNN (Nos S1-S47).

Status at CDS : Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD.

Simbad objects: 52

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Number of rows : 52
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 3FGL J0133.3+5930 BLL 01 33 21 +59 30.8           ~ 10 0
2 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2691 2
3 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4092 2
4 HESS J1858+020 gam 18 58 20.0 +02 05 24           ~ 39 0
5 Ass Cyg OB 8 As* 20 15 +40.9           ~ 69 0
6 [AAA2018] FGL J2018.1+4111 gam 20 18.1 +41 11           ~ 2 0
7 3FGL J2018.6+4213 gam 20 18 42 +42 13.8           ~ 4 0
8 TGSSADR J201846.6+422010 Rad 20 18 46.64 +42 20 10.0           ~ 1 0
9 NVSS J201847+422010 Rad 20 18 47.10 +42 20 11.4           ~ 1 0
10 ARGO J2021+4038 gam 20 19 00.0 +40 42 00           ~ 29 1
11 NAME gam Cyg SNR SNR 20 20 17.100 +40 26 09.00           ~ 212 2
12 PSR J2021+4026 Psr 20 21 30.496 +40 26 53.56           ~ 222 2
13 * gam Cyg V* 20 22 13.7018357 +40 15 24.044963 3.44 2.90 2.23 1.74 1.40 F8Ib 568 0
14 3FGL J2023.5+4126 gam 20 23 29.1 +41 27 03           ~ 10 0
15 [KMH2014] J202335.81+412523.53 Y*O 20 23 35.810 +41 25 23.53           ~ 2 0
16 3FGL J2026.8+4003 gam 20 26 52 +40 03.2           ~ 4 0
17 WN B2026.6+4027 Rad 20 28 24.13 +40 37 44.4           ~ 1 0
18 TGSSADR J202824.3+403749 Rad 20 28 24.34 +40 37 49.8           ~ 1 0
19 NVSS J202824+403751 Rad 20 28 24.46 +40 37 51.8           ~ 1 0
20 19P 6 Rad 20 28 24.7 +40 37 51           ~ 3 0
21 3FGL J2028.5+4040c gam 20 28 32 +40 40.6           ~ 6 0
22 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 729 1
23 PSR J2030+4415 Psr 20 30 51.396 +44 15 38.73           ~ 47 0
24 WSRTGP 2029+4129 Rad 20 31 12.6 +41 39 18           ~ 2 0
25 [PMI2007] 2 Rad 20 31 50.07 +41 32 08.4           ~ 2 0
26 CXOGSG J203151.8+413119 X 20 31 51.8 +41 31 19           ~ 1 0
27 3XMM J203151.8+413118 X 20 31 51.81 +41 31 18.6           ~ 1 0
28 [BDB2006] 234 X 20 31 51.840 +41 31 18.84           ~ 4 0
29 NAME Cyg Complex reg 20 32 +45.0           ~ 561 0
30 TeV J2032+4130 gam 20 32.1 +41 34           ~ 127 0
31 CXOGSG J203213.1+412722 X 20 32 13.1 +41 27 22           ~ 1 0
32 [MT91] 213 Be* 20 32 13.1247390384 +41 27 24.346666440 13.12 13.08 11.266     B0Vp 249 0
33 [PMI2007] 6 Rad 20 32 16.29 +41 30 55.6           ~ 2 0
34 NVSS J203225+405728 Rad 20 32 25.7705 +40 57 27.915           ~ 3 0
35 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1868 2
36 GPSR 079.602+0.506 Rad 20 32 29.57 +40 38 48.9           ~ 2 0
37 19P 18 Rad 20 32 29.7 +40 38 49           ~ 3 0
38 3FGL J2032.5+4032 gam 20 32 30 +40 32.1           ~ 4 0
39 3XMM J203236.1+405603 X 20 32 36.11 +40 56 04.0           ~ 1 0
40 2XMM J203237.5+405557 X 20 32 37.5 +40 55 57           ~ 1 0
41 3XMM J203237.5+405558 X 20 32 37.53 +40 55 58.2           ~ 1 0
42 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 756 0
43 CXOGSG J203248.8+404804 X 20 32 48.8 +40 48 04           ~ 1 0
44 NVSS J203254+403128 Rad 20 32 54.73 +40 31 28.0           ~ 1 0
45 WN B2031.1+4021 Rad 20 32 55.13 +40 31 24.2           ~ 1 0
46 19P 22 Rad 20 32 55.5 +40 31 27           ~ 4 0
47 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 878 0
48 2MASS J20331489+4049096 Em* 20 33 14.8921660680 +40 49 09.609588300           ~ 2 0
49 3FGL J2036.8+4234c gam 20 36 53 +42 34.1           ~ 4 0
50 3FGL J2037.4+4132c gam 20 37 25 +41 32.0           ~ 4 0
51 3FGL J2038.4+4212 gam 20 38 30.0 +42 12 31           ~ 7 0
52 2FGL J2040.1+4105c gam 20 39 25 +41 11.9           ~ 10 0

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2022.08.10-07:45:41

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