1995A&A...303..872C

Query : 1995A&A...303..872C

1995A&A...303..872C - Astronomy and Astrophysics, volume 303872-880 (1995/11-3)

On the origin of the γ-ray fields in the Ara region.

COMBI J.A. and ROMERO G.E.

Abstract (from CDS):

We report and discuss results of 1435MHz observations of the continuum emission from the Ara region. Using data from the previous 408MHz all-sky survey by Haslam et al. (1981) we have computed the spectral index distribution in the region. After the subtraction of a background component, several interesting features can be observed at both frequencies. We pay particular attention to an extended nonthermal source which is coincident with a strong γ-ray emission zone at 10deg from the galactic plane. We suggest that this feature could be the result of the interaction of a supernova remnant (SNR) with an interstellar cloud. Our interpretation can explain both the nonthermal nature of the radio source as well as the enhancement in the γ-ray flux. Several parameters are estimated for this context and other possible interpretations are briefly discussed.

Abstract Copyright: ∼

Journal keyword(s): ISM: supernova remnants, clouds - radio continuum: ISM - gamma rays: observations

Nomenclature: NAME ARA 335-11, Table 1: [CR95] NN (Nos 1-30)

CDS comments: PKS 1610-60 = PKS 1610-607

Simbad objects: 35

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Number of rows : 35
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 ESO 137-6 rG 16 15 03.864 -60 54 26.14   13.08 12.83 11.33   ~ 119 0
2 HD 152478 Be* 16 56 08.8420101600 -50 40 29.242895268 5.64 6.31 6.33     B3Vnpe 96 0
3 V* V821 Ara LXB 17 02 49.3876391280 -48 47 23.087954544         15.322 ~ 2237 0
4 1RXS J170855.6-440653 LXB 17 08 54.346 -44 06 08.38           ~ 406 1
5 * gam Ara Be* 17 25 23.6593111 -56 22 39.814775 2.25 3.21 3.34     B1Ib 281 0
6 ICRF J173735.7-563403 Sy2 17 37 35.7711421992 -56 34 03.153321552   17.0       ~ 96 0
7 V* V926 Sco LXB 17 38 58.2384053021 -44 27 00.699118812 16.90 17.70 17.5     ~ 480 0
8 GLEAM J174202-605519 Sy1 17 42 01.6 -60 55 20     20     ~ 26 1
9 1Jy 1740-51 Rad 17 44 -51.0           ~ 1 0
10 PKS 1754-59 rG 17 59 06.03 -59 47 02.0           ~ 16 1
11 PKS 1814-51 rG 18 18 06.6332 -51 58 09.943           ~ 25 1
12 QSO B1814-637 Bla 18 19 35.00241 -63 45 48.1926   16.80 14.40 13.4   ~ 154 1
13 [CR95] 15 Rad ~ ~           ~ 1 0
14 [CR95] 19 Rad ~ ~           ~ 1 0
15 [CR95] 20 Rad ~ ~           ~ 1 0
16 [CR95] 21 Rad ~ ~           ~ 1 0
17 [CR95] 23 Rad ~ ~           ~ 1 0
18 [CR95] 25 Rad ~ ~           ~ 1 0
19 [CR95] 26 Rad ~ ~           ~ 1 0
20 [CR95] 27 Rad ~ ~           ~ 1 0
21 [CR95] 28 Rad ~ ~           ~ 1 0
22 [CR95] 29 Rad ~ ~           ~ 1 0
23 [CR95] 30 Rad ~ ~           ~ 1 0
24 NAME Ara reg ~ ~           ~ 22 0
25 [CR95] 2 Rad ~ ~           ~ 1 0
26 [CR95] 3 Rad ~ ~           ~ 1 0
27 [CR95] 4 Rad ~ ~           ~ 1 0
28 [CR95] 5 Rad ~ ~           ~ 1 0
29 [CR95] 6 Rad ~ ~           ~ 1 0
30 [CR95] 7 Rad ~ ~           ~ 1 0
31 [CR95] 9 Rad ~ ~           ~ 1 0
32 [CR95] 10 Rad ~ ~           ~ 1 0
33 [CR95] 12 Rad ~ ~           ~ 1 0
34 [CR95] 13 Rad ~ ~           ~ 1 0
35 [CR95] 14 Rad ~ ~           ~ 1 0

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