000299846 001__ 299846 000299846 005__ 20250717104452.0 000299846 0247_ $$2doi$$a10.1088/1475-7516/2016/05/057 000299846 0247_ $$2arXiv$$aarXiv:1512.08108 000299846 0247_ $$2WOS$$aWOS:000389860500035 000299846 0247_ $$2altmetric$$aaltmetric:8173258 000299846 0247_ $$2inspire$$ainspire:1411398 000299846 0247_ $$2openalex$$aopenalex:W2198403455 000299846 037__ $$aPUBDB-2016-02031 000299846 041__ $$aEnglish 000299846 082__ $$a530 000299846 0881_ $$aDESY-15-245; arXiv:1512.08108 000299846 088__ $$2DESY$$aDESY-15-245 000299846 088__ $$2arXiv$$aarXiv:1512.08108 000299846 1001_ $$0P:(DE-HGF)0$$aGiannotti, Maurizio$$b0 000299846 245__ $$aCool WISPs for stellar cooling excesses 000299846 260__ $$aLondon$$bIOP$$c2016 000299846 3367_ $$2DRIVER$$aarticle 000299846 3367_ $$2DataCite$$aOutput Types/Journal article 000299846 3367_ $$0PUB:(DE-HGF)29$$2PUB:(DE-HGF)$$aReport$$mreport 000299846 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1482139397_22623 000299846 3367_ $$2BibTeX$$aARTICLE 000299846 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000299846 3367_ $$00$$2EndNote$$aJournal Article 000299846 520__ $$aSeveral stellar systems (white dwarfs, red giants, horizontal branch stars and possibly the neutron star in the supernova remnant Cassiopeia A) show a preference for a mild 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 represents the best solution. 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