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A kilonova (also called a macronova) is a transient astronomical event that occurs in a compact binary system when two neutron stars (BNS) or a neutron star and a black hole merge.[1] The merger produces instantaneous gravitational wave and short gamma-ray burst signals, followed over the following weeks and months by the kilonova, an isotropically expanding luminous afterglow of electromagnetic radiation associated with the radioactive decay of ejected r-process nuclei.[2][3]
The high sphericity of kilonovae through its early epochs was deduced from the blackbody nature of the spectrum observed for the most important recorded BNS merger, GW170817 / AT2017gfo.[4][5]
- ^ Cite error: The named reference
LiPaczynski1998was invoked but never defined (see the help page). - ^ Metzger, Brian D. (2019-12-16). "Kilonovae". Living Reviews in Relativity. 23 (1): 1. arXiv:1910.01617. Bibcode:2019LRR....23....1M. doi:10.1007/s41114-019-0024-0. ISSN 1433-8351. PMC 6914724. PMID 31885490.
- ^ Rosswog, Stephan (2015-04-01). "The multi-messenger picture of compact binary mergers". International Journal of Modern Physics D. 24 (5): 1530012–1530052. arXiv:1501.02081. Bibcode:2015IJMPD..2430012R. doi:10.1142/S0218271815300128. ISSN 0218-2718. S2CID 118406320.
- ^ Cite error: The named reference
Spherwas invoked but never defined (see the help page). - ^ Sneppen, Albert (2023-09-01). "On the Blackbody Spectrum of Kilonovae". The Astrophysical Journal. 955 (1): 44. arXiv:2306.05452. Bibcode:2023ApJ...955...44S. doi:10.3847/1538-4357/acf200. ISSN 0004-637X.