학술논문
Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A
Document Type
Working Paper
Author
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.; Lenkić, 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, Th.; Lagage, P. -O.; Őstlin, G.; Ray, T. P.; Vandenbussche, B.
Source
SCIENCE 22 Feb 2024 Vol 383, Issue 6685 pp. 898-903
Subject
Language
Abstract
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 sulphur. 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 pulsar wind nebula. The velocity shift could be evidence for a neutron star natal kick.
Comment: Authors version of manuscript published in Science on 22 Feb 2024
Comment: Authors version of manuscript published in Science on 22 Feb 2024