217 citations · 1.5k across the 50 of their papers we have counts for
50 papers
Can diffuse X-rays be important in driving photoionisation in molecular clouds?
E. I. Makarenko, A. V. Ivlev, S. Bialy +5
The ionisation balance in molecular clouds is regulated by several ionising sources, including cosmic rays, X-rays, and ultraviolet radiation. Their relative importance depends on…
Constraining Baryonic Feedback at with the H Luminosity Function
Ivan Rapoport, Vincent Desjacques, Ehud Behar +1
Baryonic feedback remains one of the primary uncertainties in galaxy formation models because of its impact on the interstellar medium (ISM) and star formation. We investigate its…
Shock-heated Away: The Impact of Radiative Cooling on Gas-Phase Transitions in Supernova Remnants
Zuzanna Kocjan, Benedikt Diemer, Vadim A. Semenov +2
Supernova (SN) feedback plays a central role in regulating the structure of the interstellar medium (ISM) through the injection of energy and momentum. The amount of hot gas produc…
Multiphase turbulence as the origin of OH+, H2O+ and H3+ column density scatter in the local ISM
Uri Malamud, Shmuel Bialy, Benjamin Godard +2
Observations of the reactive ions OH+, H2O+ and H3+ in the Galactic interstellar medium reveal large sight-line-to-sight-line scatter in their column densities, commonly interprete…
The first three-dimensional map of thermal phases in the local interstellar medium
Jonathan Shelest, Shmuel Bialy, Troy A. Porter +3
The thermal state of interstellar gas controls whether it remains warm and diffuse or cools into dense clouds. Twenty-one centimetre observations have established a statistical pic…
HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules. III. The absorption lines of [O I], CH, and OH
W. -J. Kim, A. M. Jacob, D. A. Neufeld +17
The HyGAL Stratospheric Observatory for Infrared Astronomy (SOFIA) legacy program aims at characterizing the interstellar medium in the Milky Way using hydrides, [C II], and [O I]…
JWST observations of cosmic-ray-excited H in Barnard 68: spatial variations and constraints on cosmic-ray attenuation
David A. Neufeld, Kedron Silsbee, Alexei V. Ivlev +9
We present James Webb Space Telescope (JWST) NIRSpec observations of the starless dark cloud Barnard 68 that reveal the spatially-resolved signature of cosmic-ray excited molecular…
The first detection of cosmic-ray excited H in interstellar space
Shmuel Bialy, Amit Chemke, David A. Neufeld +12
Stars and planets form within cold, dark molecular clouds. In these dense regions, where starlight cannot penetrate, cosmic rays (CRs) are the dominant source of ionization -- driv…
Molecular Hydrogen in High-redshift Damped Lyman-α Absorbers
Alon Gurman, Amiel Sternberg, Shmuel Bialy +2
Simulations predict that circumgalactic hydrogen gas surrounding massive () galaxies at may be predominantly neutral, and c…
A Nearby Dark Molecular Cloud in the Local Bubble Revealed via H Fluorescence
Blakesley Burkhart, Thavisha E. Dharmawardena, Shmuel Bialy +20
A longstanding prediction in interstellar theory posits that significant quantities of molecular gas, crucial for star formation, may be undetected due to being ``dark" in commonly…
Origin of the IRAS Vela Shell: New Insights from 3D Dust Mapping
Bore Annie Gao, Catherine Zucker, Tirupati Kumara Sridharan +15
The IRAS Vela Shell (IVS) is a structure of enhanced FIR emission located towards the Gum Nebula, a prominent region of emission in the local Milky Way shaped by various g…
A Tentative Detection of Molecular Hydrogen (H) Emission Lines at Cosmic Dawn
Madisen Johnson, Blakesley Burkhart, Francesco D'Eugenio +11
We present a theoretical framework for interpreting far-ultraviolet (FUV) fluorescent emission from molecular hydrogen (H) in high-redshift galaxies, motivated by the unique ca…
The Molecular Cloud Lifecycle I: Constraining H2 formation and dissociation rates with observations
Shmuel Bialy, Blakesley Burkhart, Daniel Seifried +9
Molecular clouds (MCs) are the birthplaces of new stars in galaxies. A key component of MCs are photodissociation regions (PDRs), where far-ultraviolet radiation plays a crucial ro…
Shocks in the warm neutral medium I -- Theoretical model
Benjamin Godard, Guillaume Pineau Des Forêts, Shmuel Bialy
Context. Atomic and molecular line emissions from shocks may provide valuable information on the injection of mechanical energy in the interstellar medium (ISM), the generation of…
The Molecular Cloud Lifecycle II: Formation and Destruction of Molecular Clouds Diagnosed via H Fluorescent Emission Emission
Blakesley Burkhart, Shmuel Bialy, Daniel Seifried +11
Molecular hydrogen (H) formation and dissociation are key processes that drive the gas lifecycle in galaxies. Using the SImulating the LifeCycle of Molecular Clouds (SILCC) zoo…
HI in Molecular Clouds: Irradiation by FUV plus Cosmic Rays
Amiel Sternberg, Shmuel Bialy, Alon Gurman
We extend the analytic theory presented by Sternberg et al. (2014) and Bialy & Sternberg (2016) for the production of atomic hydrogen (HI) via FUV photodissociation at the boundari…
Probing the Conditions for the Hı-to-H Transition in the Interstellar Medium
Gyueun Park, Min-Young Lee, Shmuel Bialy +9
In this paper, we investigate the conditions for the HI-to-H transition in the solar neighborhood by analyzing HI emission and absorption measurements toward 58 Galactic line…
HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules II. The absorption line survey with the IRAM 30 m telescope
W. -J. Kim, P. Schilke, D. A. Neufeld +11
As a complement to the HyGAL Stratospheric Observatory for Infrared Astronomy Legacy Program, we report the results of a ground-based absorption line survey of simple molecules in…
Hyperion: The origin of the stars A far-UV space telescope for high-resolution spectroscopy over wide fields
Erika Hamden, David Schiminovich, Shouleh Nikzad +30
We present Hyperion, a mission concept recently proposed to the December 2021 NASA Medium Explorer announcement of opportunity. Hyperion explores the formation and destruction of m…
A 3D View of Orion: I. Barnard's Loop
Michael M. Foley, Alyssa Goodman, Catherine Zucker +11
Barnard's Loop is a famous arc of H emission located in the Orion star-forming region. Here, we provide evidence of a possible formation mechanism for Barnard's Loop and compare…
Cosmic-ray-induced H line emission: Astrochemical modeling and implications for JWST observations
Brandt A. L. Gaches, Shmuel Bialy, Thomas G. Bisbas +3
Context: It has been proposed that H near-infrared lines may be excited by cosmic rays and allow for a determination of the cosmic-ray ionization rate in dense gas. One-dimensi…
HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules -- I. Survey description and a first look toward W3(OH), W3 IRS5 and NGC 7538 IRS1
A. M. Jacob, D. A. Neufeld, P. Schilke +22
The HyGAL SOFIA legacy program surveys six hydride molecules -- ArH+, OH+, H2O+, SH, OH, and CH -- and two atomic constituents -- C+ and O -- within the diffuse interstellar medium…
Cosmic rays in molecular clouds probed by H rovibrational lines -- Perspectives for the James Webb Space Telescope
Marco Padovani, Shmuel Bialy, Daniele Galli +7
Cosmic rays (CRs) at sub-TeV energies play a fundamental role in the chemical and dynamical evolution of molecular clouds, as they control the ionisation, dissociation, and excitat…
Star formation near the Sun is driven by expansion of the Local Bubble
Catherine Zucker, Alyssa A. Goodman, João Alves +8
For decades we have known that the Sun lies within the Local Bubble, a cavity of low-density, high-temperature plasma surrounded by a shell of cold, neutral gas and dust. However,…