Results 131 to 140 of about 5,405 (233)

Exploring Neutral Hydrogen in Radio MOlecular Hydrogen Emission Galaxies (MOHEGs) and Prospects with the SKA

The Astrophysical Journal
Empirical studies of cold gas content are essential for comprehending the star formation activities and evolution in galaxies. However, it is not straightforward to understand these processes because they depend on various physical properties of the ...
Sai Wagh, Mamta Pandey-Pommier, Nirupam Roy, Md Rashid, Alexandre Marcowith, Chinnathambi Muthumariappan, Ramya Sethuram, Subhashis Roy, Bruno Guiderdoni   +8 more
doaj   +1 more source

Radio galaxies of the local universe

, 2012
Item does not contain fulltextWe present the first catalog of radio-emitting galaxies that covers the entire sky. Our catalog allows the selection of volume-limited subsamples containing all low-power radio galaxies, similar to the prototypical low-power
Nils Nierstenhöfer, Velzen, S. van, Heino Falcke, Karl-Heinz Kampert, Schellart, P., Falcke, H.D.E., Sjoert van Velzen, Kampert, K.H., Pim Schellart, Nierstenhoefer, N., Kampert, K.-H.   +10 more
core   +1 more source

Optical- and UV-continuum Morphologies of Compact Radio Source Hosts

The Astrophysical Journal
We present the first systematic search for UV signatures from radio source-driven active galactic nuclei (AGN) feedback in Compact Steep Spectrum (CSS) radio galaxies. Owing to their characteristic sub-galactic jets (1–20 kpc projected linear sizes), CSS
C. Duggal, C. P. O’Dea, S. A. Baum, A. Labiano, C. Tadhunter, D. M. Worrall, R. Morganti, G. R. Tremblay, D. Dicken   +8 more
doaj   +1 more source

Radio galaxies near the epoch of reionisation

, 2019
This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.
Saxena, A.
core   +1 more source

FR II radio galaxies at low frequencies

, 2016
Due to their steep spectra, low-frequency observations of FR II radio galaxies potentially provide key insights in to the morphology, energetics and underlying physics of these powerful radio sources.
Harwood, Jeremy, Harwood, Jeremy (5290267)   +1 more
core   +1 more source

Linking Fermi blazars and radio galaxies through accretion and jet radiation mechanisms

Astronomy & Astrophysics
Context. Based on the classical unification, blazars, namely BL Lacertae objects (BL Lacs) and flat-spectrum radio quasars (FSRQs), are believed to correspond to radio galaxies, when observed at small jet viewing angles. Aims.
Ye Xu-Hong, Baldi Ranieri D., Yang Wen-Xin, Zhu Jing-Tian, Bastieri Denis, Bachev Rumen S., Strigachev Anton A., Fan Jun-Hui   +7 more
doaj   +1 more source

Probing restarting activity in hard X-ray selected giant radio galaxies

, 2018
With their sizes larger than 0.7 Mpc, Giant Radio Galaxies (GRGs) are the largest individual objects in the Universe. To date, the reason why they reach such enormous extensions is still unclear.
Bazzano A., Ubertini P., Bird A. J., Ursini F., Dallacasa D., Molina M., Bassani L., Hernandez-Garcia L., Panessa F., Malizia A., Giroletti M., Saripalli L., Bruni G., Chiaraluce E., Venturi T., Fiocchi M.   +15 more
core   +1 more source

Nuclear and Star Formation Activities in Nearby Galaxies: Roles of Gas Supply and Active Galactic Nucleus Feedback

The Astrophysical Journal
We analyze a sample of  ~113,000 galaxies ( z  
Huynh Anh N. Le, Yongquan Xue
doaj   +1 more source

UNIONS Optical Identifications for VLASS Radio Sources in the Euclid Sky (UNVEIL). I. A Catalog of ∼146,000 Radio Galaxies up to z ∼ 5

The Astrophysical Journal Supplement Series
We present the results of optical identifications for Very Large Array Sky Survey (VLASS) radio sources employing the Ultraviolet Near Infrared Optical Northern Survey (UNIONS).
Yuxing Zhong, Kohei Ichikawa, Hendrik Hildebrandt, Stephen Gwyn, Akio K. Inoue, Masafusa Onoue, Masatoshi Imanishi, Taketo Yoshida, Martin Kilbinger, Thomas de Boer, Gregory S. H. Paek, Yoshiki Matsuoka, Tohru Nagao, Yoshiki Toba   +13 more
doaj   +1 more source

Radio galaxies from Fermi to the CTA

, 2016
International audienceWe present the results of a study aimed at evaluating the impact of the CTA in high-energy studies of radio galaxies, and elusive class of high-energy and very-high-energy emitters, which counts only 5 detections in the TeV band at ...
Vignali, C., C. Vignali, Angioni, R., P. Grandi, Knödlseder, Jürgen, Grandi, P., E. Torresi, Knödlseder, J., R. Angioni, Torresi, E., J. Knödlseder   +10 more
core   +1 more source