Results 91 to 100 of about 1,089,439 (292)

Research on Morphological Detection of FR I and FR II Radio Galaxies Based on Improved YOLOv5

Universe, 2021
Recently, astronomy has witnessed great advancements in detectors and telescopes. Imaging data collected by these instruments are organized into very large datasets that form data-oriented astronomy.
Xingzhu Wang, Jiyu Wei, Yang Liu, Jinhao Li, Zhen Zhang, Jianyu Chen, Bin Jiang   +6 more
doaj   +1 more source

Microjansky radio sources in DC0107-46 (Abell 2877) [PDF]

, 2000
The cluster DC0107-46 (Abell 2877) lies within the Phoenix Deep Survey, made at 1.4 GHz with the Australia Telescope Compact Array. Of 89 known optical cluster members, 70 lie within the radio survey area.
A. Georgakakis, A. Hopkins, B. Mobasher, Benn C. R., Dalton G. B., Drinkwater M. J., Hammer F., Heckman T. M., J. Afonso, L. Cram, Robertson J. G., Sadler E. M., White D. A.   +12 more
core   +2 more sources

Parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies [PDF]

, 2015
Flat-spectrum radio-loud Narrow-Line Seyfert 1 galaxies (NLS1s) are a recently discovered class of $\gamma$-ray emitting Active Galactic Nuclei (AGN), that exhibit some blazar-like properties which are explained with the presence of a relativistic jet ...
M. Berton, L. Foschini, S. Ciroi, V. Cracco, G. L. Mura, M. Lister, S. Mathur, B. Peterson, J. Richards, P. R. U. D. Padova, I. Brera, P. University, O. University   +12 more
semanticscholar   +1 more source

Saving Bambi from the mower? Using a drone with thermal camera to evaluate a low‐tech scaring technique to reduce roe deer fawn mortality during grass harvest

Wildlife Biology, EarlyView.
Roe deer is a species that hides their neonates as an anti‐predator strategy. This may prove efficient against mammalian predators, such as the red fox; however, it might be an ecological trap as large numbers of fawns are killed by tractors with harvesters each year during grass harvest.
Thomas Vogler, Neri H Thorsen, Simen Pedersen   +2 more
wiley   +1 more source

Influence of major mergers on the radio emission of elliptical galaxies

, 2012
We investigate the influence of major mergers on the radio emission of elliptical galaxies. We use a complete sample of close pairs, which contains 475 merging and 1828 non-merging paired elliptical galaxies of ...
Altschuler, Auriemma, Barton, Becker, Best, Best, Brown, Calvani, Condon, Condon, Feretti, Giuricin, González Delgado, Govoni, Heckman, Heckman, Heckman, Hummel, Hummel, J. L. Han, Keel, Kocevski, L. G. Hou, Lambas, McCarthy, Ramos Almeida, Robaina, Sanders, Schawinski, Schawinski, Stocke, Tadhunter, Tal, Wen, White, Wilkinson, Y. H. Wen, Z. L. Wen   +37 more
core   +1 more source

Starburst radio galaxies: general properties, evolutionary histories and triggering [PDF]

, 2010
In this paper we discuss the results of a programme of spectral synthesis modelling of a sample of starburst radio galaxies in the context of scenarios for the triggering of the activity and the evolution of the host galaxies.
Almeida, C. Ramos, Delgado, R. Gonzalez, Emonts, B., Holt, J., Inskip, K., Morganti, R., Tadhunter, C., Villar-Martin, M., Zaurin, J. Rodriguez   +8 more
core   +3 more sources

The environments of luminous radio galaxies and type-2 quasars [PDF]

, 2013
We present the results of a comparison between the environments of (1) a complete sample of 46 southern 2-Jy radio galaxies at intermediate redshifts (0.05
C. R. Almeida, C. R. Almeida, P. Bessiere, C. Tadhunter, K. Inskip, R. Morganti, D. Dicken, J. Gonzalez-serrano, J. Holt   +8 more
semanticscholar   +1 more source

Radiation‐Induced Degradation in Polymeric Materials: Alterations in Physical–Chemical Properties and Their Effects on Electrical Performance of Insulation Systems

High Voltage, EarlyView.
ABSTRACT This paper investigates the effects of radiation on polymeric materials used as insulation systems in electrical equipment such as cables for nuclear and particle accelerator applications. After a detailed description of the physics of radiation‐induced damage in the polymeric matrix, a comprehensive analysis of the physical–chemical and ...
Simone Vincenzo Suraci, Davide Fabiani
wiley   +1 more source

Radio and spectroscopic properties of miniature radio galaxies: revealing the bulk of the radio-loud AGN population

, 2009
We explore radio and spectroscopic properties of a sample of 14 miniature radio galaxies, i.e. early-type core galaxies hosting radio-loud AGN of extremely low radio power, 10^(27-29) erg s^(-1) Hz^(-1) at 1.4 GHz.
A. Capetti, Abraham, Alexander, Allen, Anderson, Anderson, Anderson, Auriemma, Baldwin, Balmaverde, Balmaverde, Balmaverde, Baum, Becker, Becker, Best, Best, Buttiglione, Capetti, Capetti, Capetti, Capetti, Chiaberge, Cohen, Condon, Condon, de Ruiter, de Zotti, Falcke, Fanti, Fanti, Feretti, Filho, Giovannini, Giovannini, Hardcastle, Hardcastle, Heckman, Hine, Ho, Ho, Hummel, Jackson, Jansen, Jones, Kellermann, Kewley, Kunert-Bajraszewska, Lynds, Marcha, Marchã, Martin, Miller, Morganti, Morganti, Nagar, Nagar, Nagar, Nagar, Osterbrock, R. D. Baldi, Rawlings, Rawlings, Reynolds, Sadler, Snellen, Spinrad, Stanger, Torniainen, Ulvestad, Urry, White, Wrobel, Wrobel   +73 more
core   +1 more source

Radio galaxies and feedback from AGN jets [PDF]

New astronomy reviews (Print), 2020
M. Hardcastle, J. Croston
semanticscholar   +1 more source