192 citations · 660 across the 9 of their papers we have counts for
9 papers
Dynamical friction in globular cluster-rich ultra-diffuse galaxies: the case of NGC5846-UDG1
Nitsan Bar, Shany Danieli, Kfir Blum
Ultra-diffuse galaxies that contain a large sample of globular clusters (GCs) offer an opportunity to test the predictions of galactic dynamics theory. NGC5846-UDG1 is an excellent…
Galactic rotation curves versus ultralight dark matter: A systematic comparison with SPARC data
Nitsan Bar, Kfir Blum, Chen Sun
We look for and place observational constraints on the imprint of ultralight dark matter (ULDM) soliton cores in rotation-dominated galaxies. Extending previous analyses, we find a…
Assessing the Fornax globular cluster timing problem in different models of dark matter
Nitsan Bar, Diego Blas, Kfir Blum +1
We investigate what the orbits of globular clusters (GCs) in the Fornax dwarf spheroidal (dSph) galaxy can teach us about dark matter (DM). This problem was recently studied for ul…
Is there a supernova bound on axions?
Nitsan Bar, Kfir Blum, Guido D'Amico
We present a critical assessment of the SN1987A supernova cooling bound on axions and other light particles. Core-collapse simulations used in the literature to substantiate the bo…
Looking for ultralight dark matter near supermassive black holes
Nitsan Bar, Kfir Blum, Thomas Lacroix +1
Measurements of the dynamical environment of supermassive black holes (SMBHs) are becoming abundant and precise. We use such measurements to look for ultralight dark matter (ULDM),…
Ultra-light dark matter in disk galaxies
Nitsan Bar, Kfir Blum, Joshua Eby +1
Analytic arguments and numerical simulations show that bosonic ultra-light dark matter (ULDM) would form cored density distributions (`solitons') at the center of galaxies. ULDM so…
Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae
Nitsan Bar, Kfir Blum, Guido D'Amico
We study the ratio of neutrino-proton elastic scattering to inverse beta decay event counts, measurable in a scintillation detector like JUNO, as a key observable for identifying t…
Galactic Rotation Curves vs. Ultra-Light Dark Matter: Implications of the Soliton -- Host Halo Relation
Nitsan Bar, Diego Blas, Kfir Blum +1
Bosonic ultra-light dark matter (ULDM) would form cored density distributions at the center of galaxies. These cores, seen in numerical simulations, admit analytic description as t…
Turbulent thermal diffusion in strongly stratified turbulence: theory and experiments
G. Amir, N. Bar, A. Eidelman +3
Turbulent thermal diffusion is a combined effect of the temperature stratified turbulence and inertia of small particles. It causes the appearance of a non-diffusive turbulent flux…