English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We obtain the accretion, evaporation and superradiance phase diagram ofastrophysical and primordial black holes in the mass range $10^{-33}-10^{11} \,M_\odot $. This black hole mass range corresponds to production of $10^{-21} -10^{21}$ eV particles for superradiance (bosons) and evaporation (bosons andfermions). Only accretion and superradiance processes are relevant for heavyblack holes, on the other hand for light black holes of primordial origin, allthree processes can be relevant. We find that superradiance instability canhappen even for black hole spin values as low as $10^{-9}-10^{-2}$. Since lightblack holes are very unstable to these perturbations and sensitive probes ofbosonic particles, a single moderately spinning BH can probe 2-9 orders ofmagnitude of mass parameter space depending on the nature of the perturbationsthat are scalar (axion), vector (dark photon and/or photon with effective mass)and spin-2. If spinning black holes are observed and superradiance is notobserved, possibly due to self-interactions, we find limits on the axion/scalardecay constant and energy density. We generalize these bounds for vector andspin-2 fields.

Accretion, Evaporation and Superradiance Phase Diagram of (Primordial) Black Holes and $10^{-21}-10^{21}$ eV Scalar, Vector, Tensor Fields