19 citations · 55 across the 8 of their papers we have counts for
6 papers · 1 filter
What is the origin of the JWST SMBHs?
John Ellis, Malcolm Fairbairn, Juan Urrutia +1
We present a new semi-analytical model for the evolution of galaxies and supermassive black holes (SMBHs) that is based on the extended Press-Schechter formalism and phenomenologic…
511 keV Galactic Photons from a Dark Matter Spike
Pedro De la Torre Luque, Shyam Balaji, Malcolm Fairbairn +2
We propose that a dark matter (DM) spike around the Galactic Center's (GC) supermassive black hole, Sgr A*, could account for most of the bulge's measured 511 keV line intensity wh…
Supermassive black holes from inflation constrained by dark matter substructure
Shin'ichiro Ando, Shyam Balaji, Malcolm Fairbairn +2
Recent James Webb Space Telescope observations of high-redshift massive galaxy candidates have initiated renewed interest in the important mystery around the formation and evolutio…
In Search of the Biggest Bangs since the Big Bang
John Ellis, Malcolm Fairbairn, Juan Urrutia +1
Many galaxies contain supermassive black holes (SMBHs), whose formation and history raise many puzzles. Pulsar timing arrays have recently discovered a low-frequency cosmological "…
Consistency of JWST Black Hole Observations with NANOGrav Gravitational Wave Measurements
John Ellis, Malcolm Fairbairn, Gert Hütsi +3
JWST observations have opened a new chapter in studies of supermassive black holes (SMBHs), stimulating discussion of two puzzles: the abundance of SMBHs in the early Universe and…
Magnetogenesis with gravitational waves and primordial black hole dark matter
Shyam Balaji, Malcolm Fairbairn, Maria Olalla Olea-Romacho
Strongly supercooled first order phase transitions (FOPTs) can produce primordial black hole (PBH) dark matter (DM) along with observable gravitational waves (GWs) from bubble coll…