Zobrazeno 1 - 10
of 220
pro vyhledávání: '"Raghunathan Srianand"'
Autor:
Kimberly L. Emig, Neeraj Gupta, Pedro Salas, Sébastien Muller, Sergei A. Balashev, Françoise Combes, Emmanuel Momjian, Yiqing Song, Preshanth Jagannathan, Partha P. Deka, Gyula I. G. Józsa, Hans-Rainer Klöckner, Abhisek Mohapatra, Pasquier Noterdaeme, Patrick Petitjean, Raghunathan Srianand, Jonah D. Wagenveld
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 93 (2023)
We report the detection of stimulated hydrogen radio recombination line (RRL) emission from ionized gas in a z = 0.89 galaxy using 580–1670 MHz observations from the MeerKAT Absorption Line Survey. The RRL emission originates in a galaxy that inter
Externí odkaz:
https://doaj.org/article/dff2b672dd214e729b88cd7fc8fb9a10
Autor:
Labanya Kumar Guha, Raghunathan Srianand, Rajeshwari Dutta, Ravi Joshi, Pasquier Noterdaeme, Patrick Petitjean
Publikováno v:
Monthly Notices of the Royal Astronomical Society
From a sample of 109 candidate Ultra-Strong Mg II (USMgII; having rest equivalent width of Mg II absorption, $W_{2796}>3.0$ Angstrom) systems at z=0.4-0.6, we confirm 27 and identify host galaxies of 20 systems based on associated nebular line emissi
Autor:
Gitika Shukla, Raghunathan Srianand, Neeraj Gupta, Patrick Petitjean, Andrew J Baker, Jens-Kristian Krogager, Pasquier Noterdaeme
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 510:786-806
We use Southern African Large Telescope (SALT) to perform long-slit spectroscopic observations of 23 newly discovered radio-loud quasars (RLQs) at $2.7$1000 km/s in all, except one). Using the samples of high-$z$ radio-loud quasars and galaxies from
Autor:
Marcin Glowacki, Jordan D. Collier, Amir Kazemi-Moridani, Bradley Frank, Hayley Roberts, Jeremy Darling, Hans-Rainer Klöckner, Nathan Adams, Andrew J. Baker, Matthew Bershady, Tariq Blecher, Sarah-Louise Blyth, Rebecca Bowler, Barbara Catinella, Laurent Chemin, Steven M. Crawford, Catherine Cress, Romeel Davé, Roger Deane, Erwin de Blok, Jacinta Delhaize, Kenneth Duncan, Ed Elson, Sean February, Eric Gawiser, Peter Hatfield, Julia Healy, Patricia Henning, Kelley M. Hess, Ian Heywood, Benne W. Holwerda, Munira Hoosain, John P. Hughes, Zackary L. Hutchens, Matt Jarvis, Sheila Kannappan, Neal Katz, Dušan Kereš, Marie Korsaga, Renée C. Kraan-Korteweg, Philip Lah, Michelle Lochner, Natasha Maddox, Sphesihle Makhathini, Gerhardt R. Meurer, Martin Meyer, Danail Obreschkow, Se-Heon Oh, Tom Oosterloo, Joshua Oppor, Hengxing Pan, D. J. Pisano, Nandrianina Randriamiarinarivo, Swara Ravindranath, Anja C. Schröder, Rosalind Skelton, Oleg Smirnov, Mathew Smith, Rachel S. Somerville, Raghunathan Srianand, Lister Staveley-Smith, Masayuki Tanaka, Mattia Vaccari, Wim van Driel, Marc Verheijen, Fabian Walter, John F. Wu, Martin A. Zwaan
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
Glowacki, M, Collier, J D, Kazemi-Moridani, A, Frank, B, Roberts, H, Darling, J, Kloeckner, H-R, Adams, N, Baker, A J, Bershady, M, Blecher, T, Blyth, S-L, Bowler, R, Catinella, B, Chemin, L, Crawford, S M, Cress, C, Dave, R, Deane, R, de Blok, E, Delhaize, J, Duncan, K, Elson, E, February, S, Gawiser, E, Hatfield, P, Healy, J, Henning, P, Hess, K M, Heywood, I, Holwerda, B W, Hoosain, M, Hughes, J P, Hutchens, Z L, Jarvis, M, Kannappan, S, Katz, N, Keres, D, Korsaga, M, Kraan-Korteweg, R C, Lah, P, Lochner, M, Maddox, N, Makhathini, S, Meurer, G R, Meyer, M, Obreschkow, D, Oh, S-H, Oosterloo, T, Oppor, J, Pan, H, Pisano, D J, Randriamiarinarivo, N, Ravindranath, S, Schroeder, A C, Skelton, R, Smirnov, O, Smith, M, Somerville, R S, Srianand, R, Staveley-Smith, L, Tanaka, M, Vaccari, M, van Driel, W, Verheijen, M, Walter, F, Wu, J F & Zwaan, M A 2022, ' Looking at the Distant Universe with the MeerKAT Array: Discovery of a Luminous OH Megamaser at z > 0.5 ', Astrophysical Journal Letters, vol. 931, no. 1, L7, pp. 1-8 . https://doi.org/10.3847/2041-8213/ac63b0
The Astrophysical Journal, 931(1):L7. IOP PUBLISHING LTD
instname
Glowacki, M, Collier, J D, Kazemi-Moridani, A, Frank, B, Roberts, H, Darling, J, Kloeckner, H-R, Adams, N, Baker, A J, Bershady, M, Blecher, T, Blyth, S-L, Bowler, R, Catinella, B, Chemin, L, Crawford, S M, Cress, C, Dave, R, Deane, R, de Blok, E, Delhaize, J, Duncan, K, Elson, E, February, S, Gawiser, E, Hatfield, P, Healy, J, Henning, P, Hess, K M, Heywood, I, Holwerda, B W, Hoosain, M, Hughes, J P, Hutchens, Z L, Jarvis, M, Kannappan, S, Katz, N, Keres, D, Korsaga, M, Kraan-Korteweg, R C, Lah, P, Lochner, M, Maddox, N, Makhathini, S, Meurer, G R, Meyer, M, Obreschkow, D, Oh, S-H, Oosterloo, T, Oppor, J, Pan, H, Pisano, D J, Randriamiarinarivo, N, Ravindranath, S, Schroeder, A C, Skelton, R, Smirnov, O, Smith, M, Somerville, R S, Srianand, R, Staveley-Smith, L, Tanaka, M, Vaccari, M, van Driel, W, Verheijen, M, Walter, F, Wu, J F & Zwaan, M A 2022, ' Looking at the Distant Universe with the MeerKAT Array: Discovery of a Luminous OH Megamaser at z > 0.5 ', Astrophysical Journal Letters, vol. 931, no. 1, L7, pp. 1-8 . https://doi.org/10.3847/2041-8213/ac63b0
The Astrophysical Journal, 931(1):L7. IOP PUBLISHING LTD
Full list of authors: Glowacki, Marcin; Collier, Jordan D.; Kazemi-Moridani, Amir; Frank, Bradley; Roberts, Hayley; Darling, Jeremy; Klöckner, Hans-Rainer; Adams, Nathan; Baker, Andrew J.; Bershady, Matthew; Blecher, Tariq; Blyth, Sarah-Louise; Bowl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61dc0e24465232c38f093c54c67b0f6d
https://doi.org/10.3847/2041-8213/ac63b0
https://doi.org/10.3847/2041-8213/ac63b0
Quasar-galaxy pairs at small separations are important probes of gas flows in the disk-halo interface in galaxies. We study host galaxies of 198 MgII absorbers at $0.39\le z_{abs}\le1.05$ that show detectable nebular emission lines in the SDSS spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81021a4b4274897b397f0f3e2ac19eec
http://arxiv.org/abs/2211.00037
http://arxiv.org/abs/2211.00037
Autor:
Patrick Petitjean, Andrew J. Baker, N. Gupta, Gitika Shukla, Pasquier Noterdaeme, Jens-Kristian Krogager, Raghunathan Srianand
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 501:5362-5378
We report the detection of a large ($\sim90$ kpc) and luminous $\mathrm{Ly\alpha}$ nebula [$L\mathrm{_{Ly\alpha}}$ = $(6.80\pm0.08)\times 10^{44}$] $\rm{\,erg\,s^{-1}}$ around an optically faint (r$>23$ mag) radio galaxy M1513-2524 at $z\mathrm{_{em}
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 501:5424-5442
We present a detailed analysis of 99 optically thin C III absorption systems at redshift, $0.2 \le z \le 0.9$ associated with neutral hydrogen column densities in the range, $15 \le {\rm log}$ $N_{\rm H\,I}$ ($cm^{-2}$) $\le 16.2$. Using photoionizat
Publikováno v:
Astronomy Letters. 46:715-725
The linear increase of the cosmic microwave background (CMB) temperature with cosmological redshift, $T_{\rm CMB} = T_0(1 + z)$, is a prediction of the standard cosmological $\Lambda$CDM model. There are currently two methods to measure this dependen
Autor:
Varsha P. Kulkarni, David V. Bowen, Lorrie A. Straka, Donald G. York, Neeraj Gupta, Pasquier Noterdaeme, Raghunathan Srianand
Publikováno v:
The Astrophysical Journal, 929(2):150
We report {\it HST} COS spectroscopy of 10 quasars with foreground star-forming galaxies at 0.02$
Comment: 51 pages, 12 figures. Submitted to the Astrophysical Journal
Comment: 51 pages, 12 figures. Submitted to the Astrophysical Journal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c393c6fdf7793e1bc18f1eeb73ed37e5
https://hdl.handle.net/1887/3562556
https://hdl.handle.net/1887/3562556
Emergence of a new H I 21-cm absorption component at z 1.1726 towards the γ -ray blazar PKS 2355-106
Autor:
Raghunathan Srianand, Neeraj Gupta, Patrick Petitjean, Emmanuel Momjian, Sergei A Balashev, Françoise Combes, Hsiao-Wen Chen, Jens-Kristian Krogager, Pasquier Noterdaeme, Hadi Rahmani, Andrew J Baker, Kimberly L Emig, Gyula I G Józsa, Hans-Rainer Kloeckner, Kavilan Moodley
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2022, ⟨10.1093/mnras/stac1877⟩
Monthly Notices of the Royal Astronomical Society, 2022, ⟨10.1093/mnras/stac1877⟩
We report the emergence of a new HI 21-cm absorption at z_abs = 1.172635 in the damped Lyman-alpha absorber (DLA) towards the gamma-ray blazar PKS 2355-106 (z_em~1.639) using science verification observations (June 2020) from the MeerKAT Absorption L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26de1652a2b09617ce141fba2cc191fd
https://hal-insu.archives-ouvertes.fr/insu-03748238/document
https://hal-insu.archives-ouvertes.fr/insu-03748238/document