Astronomy: ASASSN-15lh: A highly super-luminous supernova
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Fecha
2016-01
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
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Título del volumen
Editor
American Association for the Advancement of Science
Nombre de Curso
Licencia CC
Licencia CC
Resumen
We report the discovery of ASASSN-15lh (SN 2015L), which we interpret as the most luminous supernova yet found. At redshift z = 0.2326, ASASSN-15lh reached an absolute magnitude of Mu,AB = –23.5 ± 0.1 and bolometric luminosity Lbol = (2.2 ± 0.2) × 1045 ergs s–1, which is more than twice as luminous as any previously known supernova. It has several major features characteristic of the hydrogen-poor super-luminous supernovae (SLSNe-I), whose energy sources and progenitors are currently poorly understood. In contrast to most previously known SLSNe-I that reside in star-forming dwarf galaxies, ASASSN-15lh appears to be hosted by a luminous galaxy (MK ≈ –25.5) with little star formation. In the 4 months since first detection, ASASSN-15lh radiated (1.1 ± 0.2) × 1052 ergs, challenging the magnetar model for its engine.
Notas
Indexación: Scopus.
Palabras clave
ASASSN-15lh (SN 2015L), Most Luminous Supernova
Citación
Science. Volume 351, Issue 6270, Pages 257 - 260. 15 January 2016
DOI
10.1126/science.aac9613