000063549 001__ 63549 000063549 005__ 20200221144211.0 000063549 0247_ $$2doi$$a10.1088/1475-7516/2016/05/057 000063549 0248_ $$2sideral$$a95264 000063549 037__ $$aART-2016-95264 000063549 041__ $$aeng 000063549 100__ $$aGiannotti, Maurizio 000063549 245__ $$aCool WISPs for stellar cooling excesses 000063549 260__ $$c2016 000063549 5060_ $$aAccess copy available to the general public$$fUnrestricted 000063549 5203_ $$aSeveral 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. 000063549 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/RYC-2012-10957 000063549 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000063549 590__ $$a4.734$$b2016 000063549 591__ $$aPHYSICS, PARTICLES & FIELDS$$b7 / 29 = 0.241$$c2016$$dQ1$$eT1 000063549 591__ $$aASTRONOMY & ASTROPHYSICS$$b13 / 63 = 0.206$$c2016$$dQ1$$eT1 000063549 592__ $$a0.999$$b2016 000063549 593__ $$aAstronomy and Astrophysics$$c2016$$dQ2 000063549 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000063549 700__ $$0(orcid)0000-0003-1163-1687$$aIrastorza, Igor$$uUniversidad de Zaragoza 000063549 700__ $$0(orcid)0000-0002-1044-8197$$aRedondo, Javier$$uUniversidad de Zaragoza 000063549 700__ $$aRingwald, Andreas 000063549 7102_ $$12004$$2405$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Teórica 000063549 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl. 000063549 773__ $$g2016, 5 (2016), [24 pp.]$$pJ. Cosmol. Astropart. Phys.$$tJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS$$x1475-7516 000063549 8564_ $$s1018247$$uhttps://zaguan.unizar.es/record/63549/files/texto_completo.pdf$$yPostprint 000063549 8564_ $$s64158$$uhttps://zaguan.unizar.es/record/63549/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000063549 909CO $$ooai:zaguan.unizar.es:63549$$particulos$$pdriver 000063549 951__ $$a2020-02-21-13:11:39 000063549 980__ $$aARTICLE