2020ApJ...894...88A

Query : 2020ApJ...894...88A

2020ApJ...894...88A - Astrophys. J., 894, 88-88 (2020/May-2)

The γ-ray emission of star-forming galaxies.

AJELLO M., DI MAURO M., PALIYA V.S. and GARRAPPA S.

Abstract (from CDS):

A majority of the γ-ray emission from star-forming galaxies is generated by the interaction of high-energy cosmic rays with the interstellar gas and radiation fields. Star-forming galaxies are expected to contribute to both the extragalactic γ-ray background and the IceCube astrophysical neutrino flux. Using roughly 10 yr of γ-ray data taken by the Fermi Large Area Telescope, in this study we constrain the γ-ray properties of star-forming galaxies. We report the detection of 11 bona fide γ-ray-emitting galaxies and 2 candidates. Moreover, we show that the cumulative γ-ray emission of below-threshold galaxies is also significantly detected at ∼5σ confidence. The γ-ray luminosity of resolved and unresolved galaxies is found to correlate with the total (8-1000 µm) infrared luminosity as previously determined. Above 1 GeV, the spectral energy distribution of resolved and unresolved galaxies is found to be compatible with a power law with a photon index of ≃2.2-2.3. Finally, we find that star-forming galaxies account for roughly 5% and 3% of the extragalactic γ-ray background and the IceCube neutrino flux, respectively.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Starburst galaxies - Gamma-rays - Neutrino astronomy

VizieR on-line data: <Available at CDS (J/ApJ/894/88): table1.dat fig2.dat fig3.dat>

Simbad objects: 26

goto Full paper

goto View the references in ADS

Number of rows : 26
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 NGC 507 rG 01 23 39.950 +33 15 22.22   13.0       ~ 459 1
5 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
6 PSR J0218+42 Psr 02 18 06.3604 +42 32 17.365           ~ 365 2
7 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
8 PSR J0357+32 Psr 03 57 52.161 +32 05 23.63           ~ 104 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
10 NGC 2146 AGN 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 765 2
11 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
12 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
13 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
14 NGC 3424 AGN 10 51 46.322 +32 54 02.44   13.2       ~ 176 1
15 PSR B1055-52 Psr 10 57 59.0450 -52 26 56.330           ~ 757 0
16 IC 694 AG? 11 28 27.312 +58 34 42.29   18.2       ~ 258 2
17 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
18 PSR J1231-1411 Psr 12 31 11.3069 -14 11 43.628           ~ 139 0
19 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
20 PSR J1311-3430 Psr 13 11 45.7292612136 -34 30 30.294149760   21.0   18.8   ~ 181 1
21 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
22 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
23 Z 199-27 AGN 17 54 51.7605214584 +34 46 34.575409236   13.9       ~ 107 0
24 NVSS J175451+344633 Rad 17 54 51.84 +34 46 34.7           ~ 3 1
25 PSR J1836+5925 Psr 18 36 13.661 +59 25 29.77           ~ 153 0
26 NAME Local Group GrG ~ ~           ~ 9325 0

To bookmark this query, right click on this link: simbad:objects in 2020ApJ...894...88A and select 'bookmark this link' or equivalent in the popup menu