63549 20250113143109.0 doi 10.1088/1475-7516/2016/05/057 sideral 95264 ART-2016-95264 eng Giannotti, Maurizio (orcid)0000-0001-9823-6262 Cool WISPs for stellar cooling excesses 2016 Access copy available to the general public Unrestricted 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. info:eu-repo/grantAgreement/ES/MINECO/RYC-2012-10957 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.734 2016 PHYSICS, PARTICLES & FIELDS 7 / 28 = 0.25 2016 Q1 T1 ASTRONOMY & ASTROPHYSICS 13 / 63 = 0.206 2016 Q1 T1 0.999 2016 Astronomy and Astrophysics 2016 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Irastorza, Igor Universidad de Zaragoza (orcid)0000-0003-1163-1687 Redondo, Javier Universidad de Zaragoza (orcid)0000-0002-1044-8197 Ringwald, Andreas 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 2016, 5 (2016), [24 pp.] J. Cosmol. Astropart. Phys. Journal of Cosmology and Astroparticle Physics 1475-7516 1018247 http://zaguan.unizar.es/record/63549/files/texto_completo.pdf Postprint 64158 http://zaguan.unizar.es/record/63549/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:63549 articulos driver 2025-01-13-14:30:21 ARTICLE