output
20002025
most citedCritical phenomena in complex networks

2.3k citations

Showing astro-ph.GAShow all

15 papers · 1 filter

astro-ph.GA2025

Origin of gas in the Magellanic Bridge: MeerKAT detection of HI 21-cm absorption

A. P. M. Morelli, J. Kerp, N. Gupta +6

HI 21-cm absorption lines are investigated to determine the origin of the neutral atomic hydrogen (HI) of the Magellanic Bridge (MB). Using the MeerKat Absorption Line Survey (MALS…

astro-ph.GA2025★ 4 cited

The MeerKAT Absorption Line Survey (MALS) data release 3: Cold atomic gas associated with the Milky Way

N. Gupta, J. Kerp, S. A. Balashev +15

We present results of a blind search for Galactic HI 21-cm absorption lines toward 19130 radio sources, using 390 pointings of MALS, each pointing centered on a source brighter tha…

astro-ph.GA2024

The rich galactic environment of a H-absorption selected quasar

F. Urbina, P. Noterdaeme, T. A. M. Berg +3

We present the first VLT/MUSE observations of a quasar featuring a proximate molecular absorption system, SDSS J125917.31+030922.5. The proximate damped Ly absorption acts as a…

astro-ph.GA2023★ 11 cited

Methanol isotopologues as a probe for spatial and temporal variations of the electron-to-proton mass ratio

J. S. Vorotyntseva, M. G. Kozlov, S. A. Levshakov

We present results on numerical calculations of the sensitivity coefficients, Qmu, of microwave molecular transitions in (13C)H3OH and CH3(18O)H to the hypothetical variation in th…

astro-ph.GA2022★ 1 cited

Collisional Pumping of HO and CHOH Masers in C-Type Shock Waves

A. V. Nesterenok

The collisional pumping of HO and CHOH masers in magnetohydrodynamic nondissociative C-type shocks is considered. A grid of C-type shock models with speeds in the range $5-…

astro-ph.GA2021★ 9 cited

Probing the electron-to-proton mass ratio gradient in the Milky Way with class I methanol masers

S. A. Levshakov, I. I. Agafonova, C. Henkel +4

We estimate limits on non-universal coupling of hypothetical hidden fields to standard matter by evaluating the fractional changes in the electron-to-proton mass ratio, mu = m_e/m_…

astro-ph.GA2021★ 22 cited

Kinetic temperature of massive star-forming molecular clumps measured with formaldehyde IV. The ALMA view of N113 and N159W in the LMC

X. D. Tang, C. Henkel, K. M. Menten +25

We mapped the kinetic temperature structure of two massive star-forming regions, N113 and N159W, in the Large Magellanic Cloud (LMC). We have used 1\hbox{$\,.\!\!^{\prime\pri…

astro-ph.GA2021

Influence of radiative pumping on the HD rotational level populations in diffuse molecular clouds of the interstellar medium

V. V. Klimenko, A. V. Ivanchik

We present a theoretical calculation of the influence of ultraviolet radiative pumping on the excitation of the rotational levels of the ground vibrational state for HD molecules u…

astro-ph.GA2020★ 2 cited

Collisional Pumping of OH Masers near Supernova Remnants

A. V. Nesterenok

The collisional pumping of OH masers in non-dissociative C-type shocks near supernova remnants is considered. The emergence of maser emission in OH lines is investigated for variou…

astro-ph.GA2020★ 12 cited

Nature of the DLA towards Q0528-250: High pressure and strong UV field revealed by excitation of CI, H2 and SiII

S. A. Balashev, C. Ledoux, P. Noterdaeme +3

We present the detection of excited fine-structure energy levels of singly-ionized silicon and neutral carbon associated with the proximate damped Lyman- system at $z_{\rm abs}=…

astro-ph.GA2019★ 9 cited

36 GHz methanol lines from nearby galaxies: maser or quasi-thermal emission?

P. Humire, C. Henkel, Y. Gong +12

Methanol (CH3OH) is one of the most abundant interstellar molecules, offering a vast number of transitions to be studied, including many maser lines. While the strongest Galactic C…

astro-ph.GA2017★ 10 cited

[CI], [CII] and CO emission lines as a probe for alpha variations at low and high redshifts

S. A. Levshakov, K. -W. Ng, C. Henkel +1

The offsets between the radial velocities of the rotational transitions of carbon monoxide and the fine structure transitions of neutral and singly ionized carbon are used to test…

astro-ph.GA2017★ 70 cited

CO-dark molecular gas at high redshift: very large H content and high pressure in a low metallicity damped Lyman-alpha system

S. A. Balashev, P. Noterdaeme, H. Rahmani +6

We present a detailed analysis of a H-rich, extremely strong intervening Damped Ly- Absorption system (DLA) at towards the quasar J0843+0221, observe…

astro-ph.GA2016★ 79 cited

Discovery of a Perseus-like cloud in the early Universe: HI-to-H2 transition, carbon monoxide and small dust grains at zabs=2.53 towards the quasar J0000+0048

P. Noterdaeme, J. -K. Krogager, S. Balashev +10

We present the discovery of a molecular cloud at zabs=2.5255 along the line of sight to the quasar J0000+0048. We perform a detailed analysis of the absorption lines from ionic, ne…

astro-ph.GA2014★ 11 cited

Star-forming regions of the Aquila rift cloud complex. II. Turbulence in molecular cores probed by NH3 emission

S. A. Levshakov, C. Henkel, D. Reimers +1

(Abridged) Aims. We intend to derive statistical properties of stochastic gas motion inside the dense low mass star forming molecular cores traced by NH3(1,1) and (2,2) emission li…