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13 papers · 2 filters
Formation and merging of Mass Gap Black Holes in Gravitational Wave Merger Events from Wide Hierarchical Quadruple Systems
Mohammadtaher Safarzadeh, Adrian S. Hamers, Abraham Loeb +1
We investigate secular evolution in hierarchical quadruple systems as a formation channel of mass-gap black holes (with masses of about ) in systems that will even…
Electromagnetic signals from the decay of free neutrons in the first hours of neutron star mergers
Ore Gottlieb, Abraham Loeb
The first hours following a neutron star merger are considered to provide several UV/optical/NIR signals: -decay emission from free neutrons, radioactive decay of shocked heavy…
Repeated Gravitational Lensing of Gravitational Waves in Hierarchical Black Hole Triples
Daniel J. D'Orazio, Abraham Loeb
We consider binary black holes (BBHs) in a hierarchical triple system where a more compact, less-massive binary is emitting detectable gravitational waves (GWs), and the tertiary i…
A fast radio burst in the direction of the Virgo cluster
Devansh Agarwal, Duncan R. Lorimer, Anastasia Fialkov +19
The rate of fast radio bursts (FRBs) in the direction of nearby galaxy clusters is expected to be higher than the mean cosmological rate if intrinsically faint FRBs are numerous. I…
Radio Flares from Collisions of Neutron Stars with Interstellar Asteroids
Amir Siraj, Abraham Loeb
We propose that collisions between neutron stars and interstellar asteroids, such as `Oumuamua, could power observable radio flares in the Milky Way galaxy. We find the rate of suc…
Determining the Composition of Relativistic Jets from Polarization Maps
Richard Anantua, Razieh Emami, Abraham Loeb +1
We present a stationary, axisymmetric, self-similar semi-analytic model of magnetically dominated jet plasma based on force-free regions of a relativistic magnetohydrodynamic simul…