May 29, 2018 to June 3, 2018
Hyatt Regency Indian Wells Conference Center
US/Pacific timezone

Signatures of Superradiant Axions from Lasing and Binary Merger Events

Jun 1, 2018, 3:20 PM
South Foyer | Pinon Room (Hyatt Regency Indian Wells Conference Center)

South Foyer | Pinon Room

Hyatt Regency Indian Wells Conference Center

44600 Indian Wells Lane, Indian Wells, CA 92210, USA
Parallel DM Dark Matter


Srimoyee Sen (University of Washington)


Superradiant axions around black holes can produce electromagnetic signatures via lasing or via conversion to photons in a strong magnetic field. The latter can also produce gravitational wave signatures besides electromagnetic ones in binary merger events involving a strongly magnetized neutron star and a black hole (BHNS). Due to the smallness of the axion mass, medium effects of the black hole environment and the interstellar medium can significantly affect electromagnetic signatures from lasing. I discuss these medium effects and the conditions under which lasing can take place. I also find that a significant fraction of the energy in the axion condensate can be released via photons in a strong magnetic field of a neutron star within the characteristic time scale of merger events. This could lead to signatures in gravitational waves from merger events of BHNS pairs.
E-mail [email protected]

Primary author

Srimoyee Sen (University of Washington)

Presentation materials