2024Sci...383..898F

Query : 2024Sci...383..898F

2024Sci...383..898F - Science, 383, 898-903 (2024/February-0)

Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A.

FRANSSON C., BARLOW M.J., KAVANAGH P.J., LARSSON J., JONES O.C., SARGENT B., MEIXNER M., BOUCHET P., TEMIM T., WRIGHT G.S., BLOMMAERT J.A.D.L., HABEL N., HIRSCHAUER A.S., HJORTH J., LENKIC L., TIKKANEN T., WESSON R., COULAIS A., FOX O.D., GASTAUD R., GLASSE A., JASPERS J., KRAUSE O., LAU R.M., NAYAK O., REST A., COLINA L., VAN DISHOECK E.F., GUDEL M., HENNING T., LAGAGE P.-O., OSTLIN G., RAY T.P. and VANDENBUSSCHE B.

Abstract (from CDS):

The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There has been no direct observation of this compact object. In this work, we observe the supernova remnant with JWST spectroscopy, finding narrow infrared emission lines of argon and sulfur. The line emission is spatially unresolved and blueshifted in velocity relative to the supernova rest frame. We interpret the lines as gas illuminated by a source of ionizing photons located close to the center of the expanding ejecta. Photoionization models show that the line ratios are consistent with ionization by a cooling neutron star or a pulsar wind nebula. The velocity shift could be evidence for a neutron star natal kick.

Abstract Copyright: © 2024 American Association for the Advancement of Science. All rights reserved. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER.

Journal keyword(s):

Simbad objects: 8

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Number of rows : 8
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
3 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
4 PSR B0540-69 Psr 05 40 11.2000490438 -69 19 54.198559829           ~ 976 3
5 SNR G054.1+00.3 SNR 19 30 10.6 +18 50 22           ~ 271 1
6 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 790 0
7 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
8 NAME Local Group GrG ~ ~           ~ 9325 0

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