Resumen: We determine limits from SN 1987A on massive axionlike particles with masses in the 10 keV-100 MeV range and purely coupled to two photons. Axionlike particles produced in the core collapse escape from the star and decay into photons that can be observed as a delayed and diffuse burst. We discuss the time and angular distribution of such a signal. Looking into the future, we also estimate the possible improvements caused by better gamma-ray detectors or the explosion of the red supergiant Betelgeuse in a supernova event. Idioma: Inglés DOI: 10.1103/PhysRevD.98.055032 Año: 2018 Publicado en: PHYSICAL REVIEW D 98, 5 (2018), 055032 [14 pp] ISSN: 2470-0010 Factor impacto JCR: 4.368 (2018) Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 17 / 69 = 0.246 (2018) - Q1 - T1 Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 7 / 29 = 0.241 (2018) - Q1 - T1 Factor impacto SCIMAGO: 1.703 - Physics and Astronomy (miscellaneous) (Q1)