2023AJ....166..149F

Query : 2023AJ....166..149F

2023AJ....166..149F - Astron. J., 166, 149 (2023/October-0)

EMU Detection of a Large and Low Surface Brightness Galactic SNR G288.8-6.3.

FILIPOVIC M.D., DAI S., ARBUTINA B., HURLEY-WALKER N., BROSE R., BECKER W., SANO H., UROSEVIC D., JARRETT T.H., HOPKINS A.M., ALSABERI R.Z.E., ALSULAMI R., BORDIU C., BALL B., BUFANO F., BURGER-SCHEIDLIN C., CRAWFORD E., ENGLISH J., HABERL F., INGALLINERA A., KAPINSKA A.D., KAVANAGH P.J., KORIBALSKI B.S., KOTHES R., LAZAREVIC S., MACKEY J., ROWELL G., LEAHY D., LORU S., MACGREGOR P.J., NICASTRO L., NORRIS R.P., RIGGI S., SASAKI M., STUPAR M., TRIGILIO C., UMANA G., VERNSTROM T. and VUKOTIC B.

Abstract (from CDS):

We present the serendipitous detection of a new Galactic supernova remnant (SNR), G288.8-6.3, using data from the Australian Square Kilometre Array Pathfinder (ASKAP) Evolutionary Map of the Universe (EMU) survey. Using multifrequency analysis, we confirm this object as an evolved Galactic SNR at high Galactic latitude with low radio surface brightness and typical SNR spectral index of α = - 0.41 ± 0.12. To determine the magnetic field strength in SNR G288.8-6.3, we present the first derivation of the equipartition formulae for SNRs with spectral indices α > - 0.5. The angular size is 1.°8 × 1.°6 (107.'6 × 98.'4), and we estimate that its intrinsic size is ∼40 pc, which implies a distance of ∼1.3 kpc and a position of ∼140 pc above the Galactic plane. This is one of the largest in angular size and closest Galactic SNRs. Given its low radio surface brightness, we suggest that it is about 13,000 yr old.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Supernova remnants - Radio astronomy

CDS comments: Kes 97 is a probable misprint for Kes 67 (cf 2018ApJ...852...84P).

Simbad objects: 30

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Number of rows : 30
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 SNR G121.1-01.9 SR? 00 36 02.3 +60 54 21           ~ 3 0
2 MCSNR J0041-7336 SNR 00 40 55 -73 36.9           ~ 36 0
3 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
4 SNR B0450-70.9 SNR 04 49 48.85 -70 51 08.8           ~ 39 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
7 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
8 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
9 ORC J0624-6948 Rad 06 24 17.78 -69 48 37.8           ~ 14 0
10 SNR G181.1+09.5 SNR 06 26 45.5 +32 31 00           ~ 21 0
11 NAME MONOCEROS NEB SNR 06 38 43 +06 30.2           ~ 264 0
12 SNR G249.5+24.5 SNR 09 32 -17.1           ~ 13 0
13 PMN J1028-6441 Rad 10 28 03.54985 -64 41 16.2180           ~ 6 0
14 SNR G288.8-06.3 SNR 10 30 22.30 -65 12 46.5           ~ 11 0
15 AT20G J103042-641526 Bz? 10 30 42.69655 -64 15 26.9119           ~ 14 1
16 PSR J1036-6559 Psr 10 36 20.040 -65 59 09.27           ~ 5 0
17 * tet Car SB* 10 42 57.4019674 -64 23 40.020796 1.53 2.54 2.76 2.87 3.10 B0Vp 351 0
18 SNR G295.5+09.7 SNR 12 09 40 -52 25.0           ~ 301 1
19 NAME Calvera SNR SNR 14 12 +79.4           ~ 11 0
20 SNR G348.7+00.3 SNR 17 13 43.0 -38 10 12           ~ 134 2
21 SNR G348.5+00.1 SNR 17 14 31.780 -38 28 34.50           ~ 233 3
22 FHES J1741.6-3917 gam 17 41.6 -39 17           ~ 6 0
23 SNR G351.0-05.4 SNR 17 45 55.0 -39 24 50           ~ 7 0
24 SNR G001.9+00.3 SNR 17 48 46.02 -27 09 52.0           ~ 243 1
25 SNR G007.5-01.7 SNR 18 09 -23.3           ~ 15 0
26 SWIFT J1818.0-1607 N* 18 18 00.23 -16 07 53.0           ~ 109 0
27 SNR G018.8+00.3 SNR 18 24.0 -12 23           ~ 112 0
28 SNR G065.1+00.6 SNR 19 54.7 +28 35           ~ 65 0
29 SNR G089.0+04.7 SNR 20 45.0 +50 35           ~ 237 0
30 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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