Výsledky vyhledávání - "Yjan A. Gordon"

Akademický článek

Compact Steep Spectrum Radio Sources with Enhanced Star Formation Are Smaller Than 10 kpc

Autor: Yjan A. Gordon, Christopher P. O’Dea, Stefi A. Baum, Keith Bechtol, Chetna Duggal, Peter S. Ferguson

Publikováno v: The Astrophysical Journal Letters, Vol 948, Iss 1, p L9 (2023)

Compact steep spectrum (CSS) radio sources are active galactic nuclei (AGN) that have radio jets propagating only on galactic scales, defined as having projected linear size (LS) of up to 20 kpc. CSS sources are generally hosted by massive early-type

Externí odkaz: https://doaj.org/article/90677f062ff745e095875e6fa2c72382

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Akademický článek

A Quick Look at the 3 GHz Radio Sky. II. Hunting for DRAGNs in the VLA Sky Survey

Autor: Yjan A. Gordon, Lawrence Rudnick, Heinz Andernach, Leah K. Morabito, Christopher P. O’Dea, Kaylan-Marie Achong, Stefi A. Baum, Caryelis Bayona-Figueroa, Eric J. Hooper, Beatriz Mingo, Melissa E. Morris, Adrian N. Vantyghem

Publikováno v: The Astrophysical Journal Supplement Series, Vol 267, Iss 2, p 37 (2023)

Active galactic nuclei (AGNs) can often be identified in radio images as two lobes, sometimes connected to a core by a radio jet. This multicomponent morphology unfortunately creates difficulties for source finders, leading to components that are (a)

Externí odkaz: https://doaj.org/article/6779da2f76ee4e53bdc7bcc8b29a9426

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Ionized Gas Outflows in Low Excitation Radio Galaxies Are Radiation Driven

Autor: M. Singha, Cameron Lawlor-Forsyth, Stefi A. Baum, Yjan A. Gordon, Christopher P. O'Dea

Low excitation radio galaxies (LERGs) are weakly accreting active galactic nuclei (AGN) believed to be fuelled by radiatively inefficient accretion processes. Despite this, recent works have shown evidence for ionized and neutral hydrogen gas outflow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcfd3bc6586e5e11c2d7890ff8dfc905
http://arxiv.org/abs/2106.02086

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The Evolutionary Map of the Universe pilot survey

Publikováno v: Norris, R P, Marvil, J, Collier, J D, Kapinska, A D, O'Brien, A N, Rudnick, L, Andernach, H, Asorey, J, Brown, M J I, Bruggen, M, Crawford, E, English, J, Rahman, S F U, Filipovic, M D, Gordon, Y, Gurkan, G, Hale, C, Hopkins, A M, Huynh, M T, HyeongHan, K, Jee, M J, Koribalski, B S, Lenc, E, Luken, K, Parkinson, D, Prandoni, I, Raja, W, Reiprich, T H, Riseley, C J, Shabala, S S, Sheil, J R, Vernstrom, T, Whiting, M T, Allison, J R, Anderson, C S, Ball, L, Bell, M, Bunton, J, Galvin, T J, Gupta, N, Hotan, A, Jacka, C, Macgregor, P J, Mahony, E K, Maio, U, Moss, V, Pandey-Pommier, M & Voronkov, M A 2021, ' The Evolutionary Map of the Universe Pilot Survey ', Publications of the Astronomical Society of Australia, vol. 38, e046, pp. 1-26 . https://doi.org/10.1017/pasa.2021.42

We present the data and initial results from the first Pilot Survey of the Evolutionary Map of the Universe (EMU), observed at 944 MHz with the Australian Square Kilometre Array Pathfinder (ASKAP) telescope. The survey covers 270 \sqdeg of an area co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71e36e3bf20635849516b282db7983a1
https://doi.org/10.1017/pasa.2021.42

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A Quick Look at the 3 GHz Radio Sky. I. Source Statistics from the Very Large Array Sky Survey

Autor: Samar Safi-Harb, Jean-Paul Bui, Heinz Andernach, Michelle M. Boyce, Yjan A. Gordon, Stefi A. Baum, Isabel Sander, Lawrence Rudnick, Mathew Dionyssiou, A. N. Vantyghem, Christopher P. O'Dea

Publikováno v: The Astrophysical Journal Supplement Series. 255:30

The Very Large Array Sky Survey (VLASS) is observing the entire sky north of $-40^{\circ}$ in the S-band ($23\,$mJy/beam and are often unreliable for fainter components. We use this catalog to perform statistical analyses of the $\nu \sim 3\,$GHz rad

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29f2d11f0fc2fd16431a200cd97474a9
https://doi.org/10.3847/1538-4365/ac05c0

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A Catalog of Very Large Array Sky Survey Epoch 1 Quick Look Components, Sources, and Host Identifications

Autor: Yjan A. Gordon, Stefi Baum, A. N. Vantyghem, Mathew Dionyssiou, H. Andernach, Michelle M. Boyce, Christopher P. O'Dea, Jean-Paul Bui, Lawrence Rudnick

Publikováno v: Research Notes of the AAS. 4:175

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::144f25d75094c039a3580e7245f0a6fc
https://doi.org/10.3847/2515-5172/abbe23

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Galaxy and Mass Assembly (GAMA): active galactic nuclei in pairs of galaxies

Autor: Mehmet Alpaslan, Ivan K. Baldry, Michael J. I. Brown, Matt S. Owers, Scott M. Croom, Benne W. Holwerda, Michelle E. Cluver, Jonathan Loveday, Luke J. M. Davies, Andrew M. Hopkins, Lingyu Wang, Sarah Brough, Edward N. Taylor, Kevin A. Pimbblet, Yjan A. Gordon, Christopher J. Conselice, M. L. P. Gunawardhana

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 465(3), 2671-2686. Oxford University Press
Monthly Notices of the Royal Astronomical Society, 465, 2671-2686

There exist conflicting observations on whether or not the environment of broad and narrow line AGN differ and this consequently questions the validity of the AGN unification model. The high spectroscopic completeness of the GAMA survey makes it idea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::696139249ebe52ac1ca7fe33791c5aed

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