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Francesca Calore02/03/2022, 16:00
Axion-like particles (ALPs) and other feebly interacting particles (FIPs) can be efficiently produced in core collapse SNe and escape the SNe envelope.
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During propagation in the interstellar medium and interaction with the environment, depending on their couplings, they may leave trace of their presence in cosmic backgrounds of high-energy radiation, from X to gamma rays, as well as specific... -
Alexander Philippov02/03/2022, 16:40
In this talk I will review the state-of-the-art understanding of pulsar magnetospheres and their radiation using first-principles kinetic simulations. I will focus on physics of pair production discharges near the star, magnetic reconnection close to the light cylinder, and their role in producing observed coherent radio and gamma-ray radiation.
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Malte Buschmann02/03/2022, 17:20
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Samuel Witte02/03/2022, 18:30
Axion dark matter may undergo efficient conversion to photons deep in the magnetospheres of neutron stars, generating narrow spectral features observable with radio telescopes. In this talk I will discuss the current state-of-the-art in the forward modeling of these systems, which rely on the use of geometric ray tracing algorithms to compute the anisotropy, spectral properties, and magnitude...
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Joshua Foster02/03/2022, 18:50
The efficient conversion of axion to radio-band photons in neutron star magnetospheres provides a tantalizing opportunity to search for micro-eV axion dark matter through indirect means with existing and upcoming telescopes. We search for evidence of this conversion process using archival Green Bank Telescope data collected in a survey of the Galactic Center in the C-Band by the Breakthrough...
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