YOUNGST@RS - Feebly Interacting Sectors Impact on Cosmology & Astrophysics

Session

X-ray and radio observations

2 Mar 2022, 16:00

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

5. Probing axion-like and other feebly interacting particles from core collapse SNe with high-energy astrophysics

Francesca Calore

02/03/2022, 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.
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...

6. Pulsar magnetospheres and their radiation

Alexander Philippov

02/03/2022, 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.

4. The QCD Axion Mass

Malte Buschmann

02/03/2022, 17:20

27. Radio lines from axion dark matter: on the forward modeling

Samuel Witte

02/03/2022, 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...

28. Axion Dark Matter Searches with Breakthrough Listen SETI Dat

Joshua Foster

02/03/2022, 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...

29. TBA