27 citations · 63 across the 6 of their papers we have counts for
7 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…
Measuring cosmic bulk flow with kinetic Sunyaev-Zel'dovich velocity reconstruction
Suroor Seher Gandhi, Matthew C. Johnson, Jordan Krywonos +1
Cosmic bulk flow--the volume-averaged peculiar velocity of matter--serves as a fundamental test of the Cosmological Principle when probed on gigaparsec (Gpc) scales. Historically,…
Exact treatment of weak dark matter-baryon scattering for linear-cosmology observables
Yacine Ali-Haïmoud, Suroor Seher Gandhi, Tristan L. Smith
Elastic scattering of dark matter (DM) particles with baryons induce cosmological signals that may be detectable with modern or future telescopes. For DM-baryon scattering cross se…
Numerical solution of the exact background collisional Boltzmann equation for dark matter-baryon scattering
Suroor Seher Gandhi, Yacine Ali-Haïmoud
Linear cosmological observables can be used to probe elastic scattering of dark matter (DM) with baryons. Availability of high-precision data requires a critical reassessment of an…
Snails Across Scales: Local and Global Phase-Mixing Structures as Probes of the Past and Future Milky Way
Suroor S. Gandhi, Kathryn V. Johnston, Jason A. S. Hunt +3
Signatures of vertical disequilibrium have been observed across the Milky Way's disk. These signatures manifest locally as unmixed phase-spirals in -- space ("snails-in-pha…
Resolving local and global kinematic signatures of satellite mergers with billion particle simulations
Jason A. S. Hunt, Ioana A. Stelea, Kathryn V. Johnston +3
In this work we present two new particle self-consistent simulations of the merger of a Sagittarius-like dwarf galaxy with a Milky Way-like disc galaxy. One model is a v…
High- and Low- Disk Stars Separate Dynamically at all Ages
Suroor S Gandhi, Melissa K Ness
There is a dichotomy in the Milky Way in the Fe]-[Fe/H] plane, in which stars fall into high-, and low- sequences. The high- sequence comprises mostly old stars, and…