34 citations · 136 across the 10 of their papers we have counts for
13 papers
Gravothermal Evolution of Self-Interacting Dark Matter Halos across Knudsen Numbers
James Gurian, Suroor Seher Gandhi, Neal Dalal +1
If the dark matter self-interacts elastically via a light mediator, then at relative velocities above a scale dictated by particle physics parameters, the cross section scales…
JWST lensed quasar dark matter survey V: Hints of self-interacting dark matter from 29 quadruply imaged quasars
D. Gilman, A. M. Nierenberg, J. Gurian +21
Theories of self-interacting dark matter (SIDM) predict the eventual core collapse of dark matter halos, a process that transforms these structures into extremely efficient gravita…
Towards A Universal Analytical Model of Population III Star Formation: A Bridge Between Cosmological Scales and Protostars
James Gurian, Boyuan Liu, Donghui Jeong +4
We construct an analytical model of Population III star formation that connects the cosmological radiation background to sub-AU protostellar disk fragmentation, a dynamic range ina…
Core Collapse Beyond the Fluid Approximation: The Late Evolution of Self-Interacting Dark Matter Halos
James Gurian, Simon May
We show that the gravothermal collapse of self-interacting dark matter (SIDM) halos can deviate from local thermodynamic equilibrium. As a consequence, the self-similar evolution p…
An Analytic Model of Gravitational Collapse Induced by Radiative Cooling: Instability Scale, Infall Velocity, and Accretion Rate
James Gurian, Boyuan Liu, Donghui Jeong +3
We present an analytic description of the spherically symmetric gravitational collapse of radiatively cooling gas clouds, which illustrates the mechanism by which radiative cooling…
Towards a universal analytical model for Population III star formation: interplay between feedback and fragmentation
Boyuan Liu, James Gurian, Kohei Inayoshi +4
JWST has brought us new insights into Cosmic Dawn with tentative detection of the unique signatures of metal-free Population III (Pop III) stars, such as strong HeII emission, extr…
Zero Metallicity with Zero CPU Hours: Masses of the First Stars on the Laptop
James Gurian, Donghui Jeong, Boyuan Liu
We develop an analytic model for the mass of the first stars forming in the center of primordial gas clouds as a function of host halo mass, redshift, and degree of rotation. The m…
A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter
James Gurian, Michael Ryan, Sarah Schon +2
We study the minimum mass of dark compact objects formed in dissipative dark-matter halos and show that the simple atomic-dark-matter model consistent with all current observations…
Molecular Chemistry for Dark Matter III: DarkKROME
Michael Ryan, Sarah Shandera, James Gurian +1
Dark matter that is dissipative may cool sufficiently to form compact objects, including black holes. Determining the abundance and mass spectrum of those objects requires an accur…
Molecular Chemistry for Dark Matter II: Recombination, Molecule Formation, and Halo Mass Function in Atomic Dark Matter
James Gurian, Donghui Jeong, Michael Ryan +1
Dissipative dark matter predicts rich observable phenomena that can be tested with future large-scale structure surveys. As a specific example, we study atomic dark matter, consist…
Molecular Chemistry for Dark Matter
Michael Ryan, James Gurian, Sarah Shandera +1
Molecular cooling is essential for studying the formation of sub-structure of dissipative dark-matter halos that may host compact objects such as black holes. Here, we analyze the…
Gauge-Invariant Tensor Perturbations Induced from Baryon-CDM Relative Velocity and the B-mode Polarization of the CMB
James Gurian, Donghui Jeong, Jai-chan Hwang +1
At second-order, scalar perturbations can source traceless and transverse perturbations to the metric, called induced gravitational waves (IGW). The apparent gauge-dependence of th…
Exploring suppressed long-distance correlations as the cause of suppressed large-angle correlations
C. J. Copi, J. Gurian, A. Kosowsky +2
The absence of large-angle correlations in the map of cosmic microwave background temperature fluctuations is among the well-established anomalies identified in full-sky and cut-sk…