%0 Generic %1 bar2019there %A Bar, Nitsan %A Blum, Kfir %A D'Amico, Guido %D 2019 %K tifr %T Is there a supernova bound on axions? %U http://arxiv.org/abs/1907.05020 %X We present a critical assessment of the SN1987A supernova cooling bound on axions and other light particles. Core-collapse simulations used in the literature to substantiate the bound omitted from the calculation the envelope exterior to the proto-neutron star (PNS). As a result, the only source of neutrinos in these simulations was, by construction, a cooling PNS. We show that if the canonical delayed neutrino mechanism failed to explode SN1987A, and if the pre-collapse star was rotating, then an accretion disk would form that could explain the late-time ($t\gtrsim5$ sec) neutrino events. Such accretion disk would be a natural feature if SN1987A was a collapse-induced thermonuclear explosion. Axions do not cool the disk and do not affect its neutrino output, provided the disk is optically-thin to neutrinos, as it naturally is. These considerations cast doubt on the supernova cooling bound.

@misc{bar2019there, abstract = {We present a critical assessment of the SN1987A supernova cooling bound on axions and other light particles. Core-collapse simulations used in the literature to substantiate the bound omitted from the calculation the envelope exterior to the proto-neutron star (PNS). As a result, the only source of neutrinos in these simulations was, by construction, a cooling PNS. We show that if the canonical delayed neutrino mechanism failed to explode SN1987A, and if the pre-collapse star was rotating, then an accretion disk would form that could explain the late-time ($t\gtrsim5$ sec) neutrino events. Such accretion disk would be a natural feature if SN1987A was a collapse-induced thermonuclear explosion. Axions do not cool the disk and do not affect its neutrino output, provided the disk is optically-thin to neutrinos, as it naturally is. These considerations cast doubt on the supernova cooling bound.}, added-at = {2019-07-12T06:30:39.000+0200}, author = {Bar, Nitsan and Blum, Kfir and D'Amico, Guido}, biburl = {https://www.bibsonomy.org/bibtex/2d34adba97e33531649317c418a5710b3/citekhatri}, description = {Is there a supernova bound on axions?}, interhash = {be8d04b487996fbe55e99404a7904d2f}, intrahash = {d34adba97e33531649317c418a5710b3}, keywords = {tifr}, note = {cite arxiv:1907.05020Comment: 6 pages, 1 figure}, timestamp = {2019-07-12T06:30:39.000+0200}, title = {Is there a supernova bound on axions?}, url = {http://arxiv.org/abs/1907.05020}, year = 2019 }