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Neutron stars aren't dark matter--we figured that out a while ago. But new research is telling us that they may be dark matter factories. They may produce the exotic axion, one of the most popular dark matter candidates.
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Hosted by Matt O'Dowd
Written by Matt Caplan, Anirudh Prabhu, & Matt O'Dowd
Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
Executive Producer: Andrew Kornhaber
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Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell
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Journal Papers Referenced In Episode:
Axion clouds around neutron stars: https://journals.aps.org/prx/abstract/10.1103/PhysRevX.14.041015
Polar cap pair cascades as the source of pulsar radio emission: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.124.245101
Axions can be produced above pulsar polar caps: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.055038
Detailed simulations of polar cap cascades: https://iopscience.iop.org/article/10.3847/2041-8213/ac2157
Constraints on axions from non-observation of radio emission from 27 pulsars: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.131.111004
Pulsar nulling from axion clouds: https://journals.aps.org/prl/accepted/99071Yf5Zed14387541d3dd31bdf5002c85cc2299
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