Cool WISPs for stellar cooling excesses
Resumen: Several stellar systems (white dwarfs, red giants, horizontal branch stars and possibly the neutron star in the supernova remnant Cassiopeia A) show a mild preference for a non-standard cooling mechanism when compared with theoretical models. This exotic cooling could be provided by Weakly Interacting Slim Particles (WISPs), produced in the hot cores and abandoning the star unimpeded, contributing directly to the energy loss. Taken individually, these excesses do not show a strong statistical weight. However, if one mechanism could consistently explain several of them, the hint could be significant. We analyze the hints in terms of neutrino anomalous magnetic moments, minicharged particles, hidden photons and axion-like particles (ALPs). Among them, the ALP or a massless HP represent the best solution. Interestingly, the hinted ALP parameter space is accessible to the next generation proposed ALP searches, such as ALPS II and IAXO and the massless HP requires a multi TeV energy scale of new physics that might be accessible at the LHC.
Idioma: Inglés
DOI: 10.1088/1475-7516/2016/05/057
Año: 2016
Publicado en: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 2016, 5 (2016), [24 pp.]
ISSN: 1475-7516

Factor impacto JCR: 4.734 (2016)
Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 7 / 29 = 0.241 (2016) - Q1 - T1
Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 13 / 63 = 0.206 (2016) - Q1 - T1

Factor impacto SCIMAGO: 0.999 - Astronomy and Astrophysics (Q2)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/RYC-2012-10957
Tipo y forma: Article (PostPrint)
Área (Departamento): Área Física Teórica (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)


Rights Reserved All rights reserved by journal editor


Exportado de SIDERAL (2020-02-21-13:11:39)

Este artículo se encuentra en las siguientes colecciones:
Articles



 Record created 2017-12-18, last modified 2020-02-21


Postprint:
 PDF
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)