418 citations · 1.7k across the 30 of their papers we have counts for
6 papers · 1 filter
Primordial black holes in the Dark Ages: Observational prospects for future 21cm surveys
Katherine J. Mack, Daniel H. Wesley
We consider the signatures of a population of primordial black holes (PBHs) in future observations of 21cm radiation from neutral hydrogen at high redshift. We focus on PBHs in the…
Effect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates
Massimo Ricotti, Jeremiah P. Ostriker, Katherine J. Mack
We investigate the effect of non-evaporating primordial black holes (PBHs) on the ionization and thermal history of the universe. X-rays emitted by gas accretion onto PBHs modify t…
Observing cosmic string loops with gravitational lensing surveys
Katherine J. Mack, Daniel H. Wesley, Lindsay J. King
We show that the existence of cosmic strings can be strongly constrained by the next generation of gravitational lensing surveys at radio frequencies. We focus on cosmic string loo…
Growth of structure seeded by primordial black holes
Katherine J. Mack, Jeremiah P. Ostriker, Massimo Ricotti
We discuss the possibilities for primordial black holes (PBHs) to grow via the accretion of dark matter. In agreement with previous works, we find that accretion during the radiati…
The Lyth Bound Revisited
George Efstathiou, Katherine J. Mack
We investigate the Lyth relationship between the tensor-scalar ratio, r, and the variation of the inflaton field, Delta phi, over the course of inflation. For inflationary models t…
Foregrounds for 21cm Observations of Neutral Gas at High Redshift
S. Peng Oh, Katherine J. Mack
We investigate a number of potential foregrounds for an ambitious goal of future radio telescopes such as the Square Kilometer Array (SKA) and Low Frequency Array (LOFAR): spatial…