190 citations · 974 across the 21 of their papers we have counts for
21 papers
On -body simulations of globular cluster stream
Nilanjan Banik, Jo Bovy
Stellar tidal streams are sensitive tracers of the properties of the gravitational potential in which they orbit and detailed observations of their density structure can be used to…
Towards constraining warm dark matter with stellar streams through neural simulation-based inference
Joeri Hermans, Nilanjan Banik, Christoph Weniger +2
A statistical analysis of the observed perturbations in the density of stellar streams can in principle set stringent contraints on the mass function of dark matter subhaloes, whic…
Dark Matter Science in the Era of LSST
Keith Bechtol, Alex Drlica-Wagner, Kevork N. Abazajian +177
Astrophysical observations currently provide the only robust, empirical measurements of dark matter. In the coming decade, astrophysical observations will guide other experimental…
Probing the Fundamental Nature of Dark Matter with the Large Synoptic Survey Telescope
Alex Drlica-Wagner, Yao-Yuan Mao, Susmita Adhikari +97
Astrophysical and cosmological observations currently provide the only robust, empirical measurements of dark matter. Future observations with Large Synoptic Survey Telescope (LSST…
Cosmological Constraints from Multiple Probes in the Dark Energy Survey
DES Collaboration, T. M. C. Abbott, A. Alarcon +166
The combination of multiple observational probes has long been advocated as a powerful technique to constrain cosmological parameters, in particular dark energy. The Dark Energy Su…
Dark Energy Survey Year 1 Results: tomographic cross-correlations between DES galaxies and CMB lensing from SPT+Planck
Y. Omori, T. Giannantonio, A. Porredon +137
We measure the cross-correlation between redMaGiC galaxies selected from the Dark Energy Survey (DES) Year-1 data and gravitational lensing of the cosmic microwave background (CMB)…
Effects of baryonic and dark matter substructure on the Pal 5 stream
Nilanjan Banik, Jo Bovy
Gravitational encounters between small-scale dark matter substructure and cold stellar streams in the Milky Way halo lead to density perturbations in the latter, making streams an…
Probing the nature of dark matter particles with stellar streams
Nilanjan Banik, Gianfranco Bertone, Jo Bovy +1
A key prediction of the standard cosmological model -- which relies on the assumption that dark matter is cold, i.e. non-relativistic at the epoch of structure formation -- is the…
Dark Energy Survey Year 1 Results: galaxy mock catalogues for BAO
S. Avila, M. Crocce, A. J. Ross +51
Mock catalogues are a crucial tool in the analysis of galaxy surveys data, both for the accurate computation of covariance matrices, and for the optimisation of analysis methodolog…
Dark Energy Survey Year 1 Results: Measurement of the Baryon Acoustic Oscillation scale in the distribution of galaxies to redshift 1
The Dark Energy Survey Collaboration, T. M. C. Abbott, F. B. Abdalla +109
We present angular diameter distance measurements obtained by locating the BAO scale in the distribution of galaxies selected from the first year of Dark Energy Survey data. We con…
Dark Energy Survey Year 1 Results: Galaxy clustering for combined probes
J. Elvin-Poole, M. Crocce, A. J. Ross +123
We measure the clustering of DES Year 1 galaxies that are intended to be combined with weak lensing samples in order to produce precise cosmological constraints from the joint anal…
Optimized Clustering Estimators for BAO Measurements Accounting for Significant Redshift Uncertainty
Ashley J. Ross, Nilanjan Banik, Santiago Avila +8
We determine an optimized clustering statistic to be used for galaxy samples with significant redshift uncertainty, such as those that rely on photometric redshifts. To do so, we s…
New astrophysical bounds on ultralight axionlike particles
Nilanjan Banik, Adam J. Christopherson, Pierre Sikivie +1
Motivated by tension between the predictions of ordinary cold dark matter (CDM) and observations at galactic scales, ultralight axionlike particles (ULALPs) with mass of the order…
The Formation of Supermassive Black Holes from Population III.1 Seeds. I. Cosmic Formation Histories and Clustering Properties
Nilanjan Banik, Jonathan C. Tan, Pierluigi Monaco
We calculate cosmic distributions in space and time of the formation sites of the first, "Pop III.1" stars, exploring a model in which these are the progenitors of all supermassive…
Galactoseismology and the Local Density of Dark Matter
Nilanjan Banik, Lawrence M. Widrow, Scott Dodelson
We model vertical breathing mode perturbations in the Milky Way's stellar disc and study their effects on estimates of the local dark matter density, surface density, and vertical…
Evolution of velocity dispersion along cold collisionless flows
Nilanjan Banik, Pierre Sikivie
The infall of cold dark matter onto a galaxy produces cold collisionless flows and caustics in its halo. If a signal is found in the cavity detector of dark matter axions, the flow…
The Rethermalizing Bose-Einstein Condensate of Dark Matter Axions
Nilanjan Banik, Adam Christopherson, Pierre Sikivie +1
The axions produced during the QCD phase transition by vacuum realignment, string decay and domain wall decay thermalize as a result of their gravitational self-interactions when t…
Recombination era magnetic fields from axion dark matter
Nilanjan Banik, Adam J. Christopherson
We introduce a new mechanism for generating magnetic fields in the recombination era. This Harrison-like mechanism utilizes vorticity in baryons that is sourced through the Bose-Ei…
Linear Newtonian perturbation theory from the Schrödinger-Poisson equations
Nilanjan Banik, Adam J. Christopherson, Pierre Sikivie +1
We obtain solutions to the coupled Schrödinger-Poisson equations. The solutions describe the evolution of cold dark matter density perturbations in an otherwise homogeneous expandi…
Cosmic Axion Bose-Einstein Condensation
Nilanjan Banik, Pierre Sikivie
QCD axions are a well-motivated candidate for cold dark matter. Cold axions are produced in the early universe by vacuum realignment, axion string decay and axion domain wall decay…
Axions and the Galactic Angular Momentum Distribution
N. Banik, P. Sikivie
We analyze the behavior of axion dark matter before it falls into a galactic gravitational potential well. The axions thermalize sufficiently fast by gravitational self-interaction…