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Neutron star kicks and implications for their rotation at birth
Giacomo Fragione, Abraham Loeb
Neutron stars are born out of core-collapse supernovae, and they are imparted natal kicks at birth as a consequence of asymmetric ejection of matter and possibly neutrinos. Unless…
Constraining the cosmic merger history of intermediate-mass black holes with gravitational wave detectors
Giacomo Fragione, Abraham Loeb
Intermediate-mass black holes (IMBHs) have not been detected beyond any reasonable doubt through either dynamical or accretion signatures. Gravitational waves (GWs) represent an un…
A new limit on intergalactic magnetic fields on sub-kpc scales from fast radio bursts
Hamsa Padmanabhan, Abraham Loeb
We use the measured scattering timescales of Fast Radio Bursts (FRBs) from the CHIME catalog to derive an upper limit on the magnetic field on sub-kpc scales in the intergalactic m…
Merger rates of intermediate-mass black hole binaries in nuclear star clusters
Giacomo Fragione, Abraham Loeb, Bence Kocsis +1
Repeated mergers of stellar-mass black holes (BHs) in dense star clusters can produce intermediate-mass black holes (IMBHs). In particular, nuclear star clusters at the centers of…
Impact of natal kicks on merger rates and spin-orbit misalignments of black hole -- neutron star mergers
Giacomo Fragione, Abraham Loeb, Frederic A. Rasio
The long wait for the detection of merging black hole -- neutron star (BH--NS) binaries is finally over with the announcement by the LIGO/Virgo/Kagra collaboration of GW200105 and…
Detection Prospects of Local Super-Massive Black Holes Based on the Sloan-Digital Sky Survey
Nadav Joseph Outmezguine, Fabio Pacucci, Abraham Loeb
We use the Sloan-Digital Sky Survey quasar catalog to statistically infer the local abundance of black holes heavier than , which allows us to estimate the detection p…