2020ApJ...896L..33X

Query : 2020ApJ...896L..33X

2020ApJ...896L..33X - Astrophys. J., 896, L33-L33 (2020/June-3)

A serendipitous discovery of GeV gamma-ray emission from Supernova 2004dj in a survey of nearby star-forming galaxies with Fermi-LAT.

XI S.-Q., LIU R.-Y., WANG X.-Y., YANG R.-Z., YUAN Q. and ZHANG B.

Abstract (from CDS):

The interaction between a supernova ejecta and the circumstellar medium drives a strong shock wave that accelerates particles (i.e., electrons and protons). The radio and X-ray emission observed after the supernova explosion can be interpreted as synchrotron emission from accelerated electrons. The accelerated protons are expected to produce GeV-TeV gamma-ray emission via proton-proton collisions, but the flux is usually low since only a small fraction of the supernova kinetic energy is converted into the shock energy at the very early time. The low gamma-ray flux of the nearest supernova explosion, SN 1987A, agrees with this picture. Here we report a serendipitous discovery of a fading GeV gamma-ray source in spatial coincidence with one of the nearest and brightest supernova-SN 2004dj from our gamma-ray survey of nearby star-forming galaxies with Fermi-LAT. The total gamma-ray energy released by SN 2004dj is about 6 x 1047 erg. We interpret this gamma-ray emission arising from the supernova ejecta interacting with a surrounding high-density shell, which decelerates the ejecta and converts ∼1% of the SN kinetic energy to relativistic protons.

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

Journal keyword(s): Gamma-ray sources - Type II supernovae - Non-thermal radiation sources

Simbad objects: 27

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Number of rows : 27
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 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
5 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
6 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
8 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
9 NGC 2146 AGN 06 18 37.710 +78 21 25.27 11.67 11.38 10.59     ~ 765 2
10 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
11 2MASS J07371703+6535579 HXB 07 37 17.0432126424 +65 35 57.826001220           SNIIP 317 1
12 NVSS J073724+653628 Rad 07 37 24.01 +65 36 28.3           ~ 1 0
13 WISEA J073725.73+653638.5 Rad 07 37 25.850 +65 36 38.41           ~ 1 0
14 4FGL J0737.4+6535 gam 07 37 30 +65 35.5           ~ 16 0
15 SN 2016bse SN* 09 20 34.30 +50 41 46.8           SNIIP 134 0
16 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
17 NGC 3067 GiG 09 58 21.0726714528 +32 22 12.012636108   12.7       ~ 255 1
18 NGC 3424 AGN 10 51 46.322 +32 54 02.44   13.2       ~ 176 1
19 NGC 3683 H2G 11 27 31.890 +56 52 36.15   12.7       ~ 197 0
20 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
21 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
22 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
23 IC 4402 Sy2 14 21 13.092 -46 17 52.44   12.79   11.27 11.7 ~ 58 0
24 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1407 1
25 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
26 SNR G347.3-00.5 SNR 17 12 27 -39 41.2     12.27     ~ 761 1
27 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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