145 citations · 394 across the 11 of their papers we have counts for
12 papers
Probing New Degrees of Freedom with the Universal Tail of Primordial Black Hole Mass Functions
Kaustubh Agashe, Jae Hyeok Chang, Steven J. Clark +3
The primordial black hole (PBH) mass function today develops a low-mass evaporation tail whose shape is universal with respect to the initial PBH mass distribution. This universali…
Light in the Shadows: Primordial Black Holes Making Dark Matter Shine
Kaustubh Agashe, Manuel Buen-Abad, Jae Hyeok Chang +4
We consider the possibility of indirect detection of dark sector processes by investigating a novel form of interaction between ambient dark matter (DM) and primordial black holes…
Detecting Axion-Like Particles with Primordial Black Holes
Kaustubh Agashe, Jae Hyeok Chang, Steven J. Clark +3
Future gamma-ray experiments, such as the e-ASTROGAM and AMEGO telescopes, can detect the Hawking radiation of photons from primordial black holes (PBHs) if they make up a fraction…
Correlating Gravitational Wave and Gamma-ray Signals from Primordial Black Holes
Kaustubh Agashe, Jae Hyeok Chang, Steven J. Clark +3
Asteroid-mass primordial black holes (PBH) can explain the observed dark matter abundance while being consistent with the current indirect detection constraints. These PBH can prod…
The and tensions necessitate early and late time changes to CDM
Steven J. Clark, Kyriakos Vattis, JiJi Fan +1
An only early or only late time alteration to CDM has been inadequate at resolving both the and tensions simultaneously; however, a combination of early and late tim…
Black hole and cosmological analysis of BF sequestered gravity
Stephon Alexander, Steven J. Clark, Gabriel Herczeg +1
We study a minimal extension of a recently proposed modification of general relativity that draws on concepts from topological field theory to resolve aspects of the cosmological c…
"Non-Local" Effects from Boosted Dark Matter in Indirect Detection
Kaustubh Agashe, Steven J. Clark, Bhaskar Dutta +1
Indirect dark matter (DM) detection typically involves the observation of standard model (SM) particles emerging from DM annihilation/decay inside regions of high dark matter conce…
Cosmological constraints on late-universe decaying dark matter as a solution to the tension
Steven J. Clark, Kyriakos Vattis, Savvas M. Koushiappas
It has been suggested that late-universe dark matter decays can alleviate the tension between measurements of in the local universe and its value inferred from cosmic microwa…
Catching p via s wave with indirect detection
Steven J. Clark, James B. Dent, Bhaskar Dutta +1
For many dark matter models, the annihilation cross section to two-body final states is difficult to probe with current experiments because the dominant annihilation channel is vel…
21cm Limits on Decaying Dark Matter and Primordial Black Holes
Steven Clark, Bhaskar Dutta, Yu Gao +2
Recently the Experiment to Detect the Global Epoch of Reionization Signature (EDGES) reported the detection of a 21cm absorption signal stronger than astrophysical expectations. In…
Dark Matter Annihilation into Four-Body Final States and Implications for the AMS Antiproton Excess
Steven J. Clark, Bhaskar Dutta, Louis E. Strigari
We consider dark matter annihilation into a general set of final states of Standard Model particles, including two-body and four-body final states that result from the decay of int…
Planck Constraint on Relic Primordial Black Holes
Steven Clark, Bhaskar Dutta, Yu Gao +2
We investigate constraints on the abundance of primordial black holes (PBHs) in the mass range 10^{15}-10^{17} g using data from the Cosmic Microwave Background (CMB) and MeV extra…