activity
20022026
most citedGalaxy Bimodality due to Cold Flows and Shock Heating

1.8k citations · 6k across the 31 of their papers we have counts for

collaborators

31 papers

astro-ph.GA2026

Non-Equilibrium Ionisation in Photoionised Haloes: Implications for Shock Stability and Absorption-Line Signatures

Itai Bromberg, Kartick C. Sarkar, Orly Gnat +1

We investigate the impact of nonequilibrium ionisation (NEI) and the metagalactic radiation-field on the thermal evolution, virial shock stability, and absorption signatures of gas…

astro-ph.GA2024

On the kinematic and thermodynamic state of clouds in complex wind-multi-cloud environments using a Friends-of-Friends analysis

Andrei Antipov, Wladimir E. Banda-Barragán, Yuval Birnboim +3

We investigate the interaction between a shock-driven hot wind and a cold multi-cloud layer, for conditions commonly found in interstellar and circumgalactic gas. We present a meth…

astro-ph.GA2024★ 2 cited

Intergalactic-Absorption Confounding Circumgalactic Observations

Itai Bromberg, Kartick C. Sarkar, Orly Gnat +1

The origin of warm ions in the circum-galactic medium (CGM) surrounding massive galaxies remains a mystery. In this paper, we argue that a significant fraction of the observed warm…

astro-ph.CO2023

Heating Galaxy Clusters with Interacting Dark Matter

Yutaro Shoji, Eric Kuflik, Yuval Birnboim +1

The overcooling of cool core clusters is a persistent puzzle in the astrophysics of galaxy clusters. We propose that it may naturally be resolved via interactions between the baryo…

astro-ph.GA2023★ 289 cited

Efficient Formation of Massive Galaxies at Cosmic Dawn by Feedback-Free Starbursts

Avishai Dekel, Kartick S. Sarkar, Yuval Birnboim +2

JWST observations indicate a surprising excess of luminous galaxies at and above, consistent with efficient conversion of the accreted gas into stars, unlike the suppres…

astro-ph.CO2020★ 38 cited

Ly Blobs from Cold Streams Undergoing Kelvin-Helmholtz Instabilities

Nir Mandelker, Frank C. van den Bosch, Daisuke Nagai +3

We present an analytic toy model for the radiation produced by the interaction between the cold streams thought to feed massive halos at high redshift and their hot CGM. We begin b…