Results 11 to 20 of about 1,194,769 (355)

A Galactic survey of radio jets from massive protostars [PDF]

, 2021
In conjunction with a previous southern-hemisphere work, we present the largest radio survey of jets from massive protostars to date with high-resolution, ($\sim 0.04^{\prime\prime}$) VLA observations towards two subsamples of massive star-forming ...
S. Purser, S. Lumsden, M. Hoare, S. Kurtz   +3 more
semanticscholar   +1 more source

Dynamics of relativistic radio jets in asymmetric environments [PDF]

, 2021
We have carried out relativistic three-dimensional simulations of high-power radio sources propagating into asymmetric cluster environments. We offset the environment by 0 or 1 core radii (equal to 144 kpc), and incline the jets by 0, 15, or 45◦ away ...
Patrick M. Yates-Jones, S. Shabala, M. Krause   +2 more
semanticscholar   +1 more source

Radio jet precession in M 81* [PDF]

Astronomy & Astrophysics, 2023
We report four novel position angle measurements of the core region M 81* at 5 GHz and 8 GHz, which confirm the presence of sinusoidal jet precession in the M 81 jet region, as suggested by Martí-Vidal et al. (2011, A&A, 533, A111). The model makes three testable predictions regarding the evolution of the jet precession, which we test in our data ...
S. D. von Fellenberg, M. Janssen, J. Davelaar, M. Zajaček, S. Britzen, H. Falcke, E. Körding, E. Ros   +7 more
openaire   +3 more sources

Two Candidate High-redshift X-Ray Jets without Coincident Radio Jets [PDF]

Astrophysical Journal, 2020
We report the detection of extended X-ray emission from two high-redshift radio quasars. These quasars, J1405+0415 at z = 3.208 and J1610+1811 at z = 3.118, were observed in a Chandra snapshot survey selected from a complete sample of the radio-brightest
D. Schwartz, A. Siemiginowska, B. Snios, D. Worrall, M. Birkinshaw, C. Cheung, H. Marshall, G. Migliori, J. Wardle, D. M. D. A. Observatory, H. P. Laboratory, U. Bristol, Space Science Division, Naval Reserach Laboratory, Kavli Institute for Astrophysics, Space Research, Massachusetts Institute of Technolody, I. D. Radioastronomia, Department of Physics, Brandeis University, University of Rhode Island   +20 more
semanticscholar   +1 more source

Wide-Angle-Tail (WAT) Radio Sources

Galaxies, 2023
We review the properties of Wide-Angle-Tail (WAT) radio sources. The WAT radio sources are powerful, bent radio sources typically associated with the dominant galaxy in a cluster or group.
Christopher P. O’Dea, Stefi A. Baum
doaj   +1 more source

Radio Emission of Nearby Early-type Galaxies in the Low and Very Low Radio Luminosity Range

The Astrophysical Journal, 2023
We analyze radio continuum emission of early-type galaxies with dynamical measurements of central supermassive black hole (SMBH) masses and well-characterized large-scale environments, but regardless of the exact level of the nuclear activity.
Anna Wójtowicz, Łukasz Stawarz, C. C. Cheung, Norbert Werner, Dominik Rudka   +4 more
doaj   +1 more source

A search for radio jets from massive young stellar objects. Association of radio jets with H2O and CH3OH masers [PDF]

, 2020
Recent theoretical and observational studies debate the similarities between the formation process of high-mass (>8 Msun) and low-mass stars. The formation of low-mass star formation is directly associated with the presence of disks and jets.
U. Kavak, Á. Sánchez-Monge, A. López-Sepulcre, R. Cesaroni, F. V. D. Tak, L. Moscadelli, M. Beltrán, P. Institut, U. Koln, 77 ZulpicherStr., 50937 Koln, H Germany, Institute for Interdisciplinary Research in Science, P. O. Astronomy, S. Sciences, I. University, Istanbul, Turkey, K. Institute, 12 Landleven, 9747AD, Groningen, The Netherlands., S. I. F. S. Research, U. G. Alpes, Cnrs, Ipag, 3. Grenoble, France., Institut de Radioastronomie Milimetrique, 300 rue de la Piscine, F-38406 Saint-Martin-d'Heres, -INAF, O. Arcetri, 5. LargoEnricoFermi, I-50125, Florence, Italy.   +37 more
semanticscholar   +1 more source

Prevalence of radio jets associated with galactic outflows and feedback from quasars [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present 1–7 GHz high-resolution radio imaging (VLA and e-MERLIN) and spatially resolved ionized gas kinematics for 10 z < 0.2 type 2 ‘obscured’ quasars (log [LAGN/erg s−1] ≳ 45) with moderate radio luminosities ($\log [L_{\rm {1.4\,GHz}}$/W Hz−1]  = 
M. Jarvis, M. Jarvis, M. Jarvis, C. Harrison, A. Thomson, C. Circosta, C. Circosta, V. Mainieri, D. Alexander, A. Edge, G. Lansbury, S. Molyneux, J. Mullaney   +12 more
semanticscholar   +1 more source

What Drives the Ionized Gas Outflows in Radio-Quiet AGN?

Galaxies, 2023
We review the mechanisms driving the ionized gas outflows in radio-quiet (RQ) AGN. Although it constitutes ∼90% of the AGN population, what drives these outflows in these AGNs remains an open question. High-resolution imaging and integral field unit (IFU)
Mainak Singha, Christopher P. O’Dea, Stefi A. Baum   +2 more
doaj   +1 more source

Radio jets from AGNs in dwarf galaxies in the COSMOS survey: mechanical feedback out to redshift ∼3.4 [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Dwarf galaxies are thought to host the remnants of the early Universe seed black holes (BHs) and to be dominated by supernova feedback. However, recent studies suggest that BH feedback could also strongly impact their growth. We report the discovery of
M. Mezcua, H. Suh, F. Civano
semanticscholar   +1 more source