From the 1 of 5 linked papers with an AI index.
5 papers
Neutrino superradiance constraint on asteroid-mass PBH Dark Matter and beyond
Yi-Xuan Lin, Priyanka Sarmah, Martin Spinrath
The paper studies neutrino emission from superradiantly produced boson clouds around rotating primordial black holes in the asteroid‑mass range and uses existing low‑energy neutrin…
Microlensing Black Hole Shadows-II: Constraining Primordial Black Hole Dark Matter using the photon rings of M87 and Sgr A*
Himanshu Verma, Priyanka Sarmah, Joseph Silk +1
The resolution of photon rings of Sgr~A and M87 is the next milestone of upcoming EHT-like interferometries. We extend the formalism developed in our previous work~\cite{Verma:…
Probing memory-burdened Primordial Black Holes with global 21 cm signal
Priyanka Sarmah, Kingman Cheung
We investigate the imprints of memory-burdened primordial black holes (PBH) on the global 21 cm signal during the cosmic dawn. Recent studies reopened the possibility of a mass win…
Effects of Superradiance in Active Galactic Nuclei
Priyanka Sarmah, Himanshu Verma, Kingman Cheung +1
A supermassive black hole (SMBH) at the core of an active galactic nucleus (AGN) provides room for the elusive ultra-light scalar particles (ULSP) to be produced through a phenomen…
Exploring interference effects between two ALP effective operators at the LHC
Kingman Cheung, Chih-Ting Lu, C. J. Ouseph +1
We observe that most studies of axion-like particle (ALP) production channels at the Large Hadron Collider (LHC) focus on a single type of ALP operator for each process in the effe…