S. J. Curran

A search for H i absorption in distant star-forming galaxies with ASKAP-FLASH – II. Direct observations and stacking of 21 cm line

Sally Eden, E. M. Sadler, Kevin A. Pimbblet, S. J. Curran et autres

ABSTRACT We present results of a search for associated and intervening H i 21 cm absorption in star-forming galaxies and a control sample of radio galaxies at 0.4 < z < 1.0, using ASKAP’s FLASH H i 21 cm absorption survey. We …

gb, au, nz, nl, it, kr (code pays fourni par la source)

C4-face-magic labeling on a 4x4 Klein bottle grid graph

Timothy Myers, S. J. Curran

For a graph G = (V, E) embedded in the Klein bottle, let F(G) denote the set of faces of G. A C_4-face-magic Klein bottle labeling on G is a bijection f: V(G) to {1, 2,..., |V(G)|} such that for any F …

C4-face-magic labeling on a 4x4 Klein bottle grid graph

Timothy Myers, S. J. Curran

For a graph G = (V, E) embedded in the Klein bottle, let F(G) denote the set of faces of G. A C_4-face-magic Klein bottle labeling on G is a bijection f: V(G) to {1, 2,..., |V(G)|} such that for any F …

us (code pays fourni par la source)

Molecular Clouds Resolved at the Onset of Cosmic Noon

Bjorn Emonts, M. D. Lehnert, Mingyu Li, Azia Robinson et autres

We present the discovery of seven molecular clouds in the radio galaxy B2 0902+34 at redshift z=3.4. These clouds are detected as CO(0-1) absorption features against the bright radio continuum, and spectrally resolved using the Karl G. Jansky Very Large Array (VLA). …

fr, us, cn, nz, Ouganda, nl (code pays fourni par la source)

A jet-gas interaction beyond the host galaxy: Detection of a neutral hydrogen outflow at cosmic noon

Renzhi Su, S. J. Curran, James R. Allison, Marcin Glowacki et autres

We present upgraded Giant Metrewave Radio Telescope (uGMRT) observations of 0731+438, an FR II radio galaxy at a redshift of 2.429 with two lobes separated by 82 kpc. A blueshifted, faint, and broad H I 21 cm absorption line with a velocity …

cn, nz, us, au (code pays fourni par la source)

A stringent constraint on the fractional change of proton g-factor

Renzhi Su, S. J. Curran, Jeremy Darling, Minfeng Gu et autres

cn, nz, au (code pays fourni par la source)

A jet-gas interaction beyond the host galaxy: Detection of a neutral hydrogen outflow at cosmic noon

S. J. Curran, James R. Allison, Marcin Glowacki, Minfeng Gu et autres

We present upgraded Giant Metrewave Radio Telescope (uGMRT) observations of 0731+438, an FR II radio galaxy at a redshift of 2.429 with two lobes separated by 82 kpc. A blueshifted, faint, and broad H I 21 cm absorption line with a velocity …

cn, nz, us, au, gb, ru, sk (code pays fourni par la source)

A jet-gas interaction beyond the host galaxy: detection of a neutral hydrogen outflow at cosmic noon

Renzhi Su, S. J. Curran, James R. Allison, Marcin Słowacki et autres

We present upgraded Giant Metrewave Radio Telescope (uGMRT) observations of 0731+438, an \mbox{FR II} radio galaxy at a redshift of 2.429 with two lobes separated by 82 kpc. A blueshifted, faint and broad \mbox{H{\sc i}} 21 cm absorption line with velocity full …

A jet-gas interaction beyond the host galaxy: detection of a neutral hydrogen outflow at cosmic noon

Renzhi Su, S. J. Curran, James R. Allison, Marcin Słowacki et autres

We present upgraded Giant Metrewave Radio Telescope (uGMRT) observations of 0731+438, an \mbox{FR II} radio galaxy at a redshift of 2.429 with two lobes separated by 82 kpc. A blueshifted, faint and broad \mbox{H{\sc i}} 21 cm absorption line with velocity full …

cn, nz, us, au (code pays fourni par la source)

One sightline, many systems: A FLASH discovery of H i towards scintillating quasar PKS 0405-385

Emily F. Kerrison, Hyein Yoon, E. M. Sadler, Yijung Kang et autres

Abstract We report the discovery of an intervening 21 cm absorption line at $z=0.882$ towards the $z=1.284$ quasar PKS 0405-385, identified in the First Large Absorption Survey in H i (FLASH). This quasar once displayed the most rapid known intraday variability at …

au, kr, us, cn, gb, nz, Afrique du Sud (code pays fourni par la source)

Photometric Redshift Predictions with a Neural Network for DESI Quasars

Jeremy Moss, S. J. Curran, Y. C. Perrott

Accurate redshift measurements are essential for studying the evolution of quasi-stellar objects (QSOs) and their role in cosmic structure formation. While spectroscopic redshifts provide high precision, they are impractical for the vast number of sources detected in large-scale surveys. Photometric redshifts, derived …

New constraints on the values of the fundamental constants at a look-back time of 7.3 Gyr

Renzhi Su, S. J. Curran, F. Combes, Di Li

The study of redshifted spectral lines can provide a measure of the fundamental constants over large look-back times. Current grand unified theories predict an evolution in these constants and astronomical observations offer the only experimental measure of the values of the constants …

fr (code pays fourni par la source)