Results 91 to 100 of about 102,596 (294)

The dust masses of powerful radio galaxies: clues to the triggering of their activity [PDF]

, 2014
We use deep Herschel Space Observatory observations of a 90% complete sample of 32 intermediate-redshift 2Jy radio galaxies (0.05 < z < 0.7) to estimate the dust masses of their host galaxies and thereby investigate the triggering mechanisms for their ...
Almeida, C., Dicken, D., Könyves, V., Morganti, R., Nesvadba, N., Ramos Almeida, C., Tadhunter, C., Ysard, N.   +7 more
core   +3 more sources

Quasars and Radio Galaxies

Journal and proceedings of the Royal Society of New South Wales, 2009
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Multitarget Recognition of Flower Images Based on Lightweight Deep Neural Network and Transfer Learning

Advanced Intelligent Systems, EarlyView.
This article proposes a lightweight YOLOv4‐based detection model using MobileNetV3 or CSPDarknet53_tiny, achieving 30+ FPS and higher mAP. It also presents a ShuffleNet‐based classification model with transfer learning and GAN‐augmented images, improving generalization and accuracy.
Qingyang Liu, Yanrong Hu, Hongjiu Liu
wiley   +1 more source

LUMINOSITY-LINEAR SIZE RELATION FOR GALAXIES AND QUASARS WITH STEEP RADIO SPECTRUM

Odessa Astronomical Publications, 2016
Our data for sources with steep radio spectrum, detected with radio telescope UTR-2 at the decametre band give evidence on the great luminosities, linear sizes, characteristic ages of these objects.
A. P. Miroshnichenko
doaj   +1 more source

The new class of FR0 radio galaxies [PDF]

, 2015
Are the FRI and FRII radio galaxies representative of the radio-loud (RL) AGN population in the local Universe? Recent studies on the local low-luminosity radio sources cast lights on an emerging population of compact radio galaxies which lack extended ...
Allen, Baldi, Baldi, Baldi, Baldi, Baldi, Baldi, Baldwin, Balmaverde, Balmaverde, Balmaverde, Balogh, Best, Bodo, Chai, Chiaberge, Chiaberge, Cielo, Fanaroff, Ghisellini, Kunert-Bajraszewska, Liu, Morganti, Perucho, Perucho, Reynolds, Sadler, Shabala, Shen, Slee, Tingay, Tremaine, Volonteri, Wing   +33 more
core   +2 more sources

Radio Galaxy Zoo: host galaxies and radio morphologies derived from visual inspection [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
Accepted to MNRAS, 17 pages, 13 figures, 1 table.
Julie Banfield, Julie Banfield, Garret Cotter, Kevin Schawinski, Stanislav S. Shabala, Ray P. Norris, Lucy Fortson, Chris Lintott, Kai Lars Polsterer, Avery F. Garon, Lawrence Rudnick, Enno Middelberg, Hans-Rainer Klöckner, Nick Seymour, Kyle W. Willett, Karen L. Masters, Karen L. Masters, Chris Snyder, O. I. Wong, Anna D. Kapińska, Ian Heywood, Ian Heywood, K. Jacob, K. Borden, Thomas W Jones, W. P. Maksym, Angel R. Lopez-Sanchez, Angel R. Lopez-Sanchez, T. Burchell, Robert Hollow, Matt J. Jarvis, R. Simpson, Edward Paget, Kate Chow, Minnie Mao, Sugata Kaviraj, Heinz Andernach, Brooke Simmons, L. Whyte, Steven P. Bamford   +39 more
openaire   +9 more sources

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, EarlyView.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

Very high-resolution radio observations of HzRGs

, 2005
We report on first results of an ongoing effort to image a small sample of high-redshift radio galaxies (HzRGs) with milliarcsecond (mas) resolution, using very-long-baseline interferometry (VLBI) techniques.
De Breuck, Carlos, Miley, George, Perez-Torres, Miguel A., van Breugel, Wil   +3 more
core   +1 more source

High-Redshift Radio Galaxies [PDF]

Highlights of Astronomy, 1995
Radio galaxies are unique cosmological probes. As with radio-loud quasars, the presence of luminous radio continuum and optical line emission enable radio galaxies to be observed and recognized at large distances, up to z = 4.2. However, unlike the situation for most quasars, their optical emission can be spatially resolved from the ground and studied ...
openaire   +3 more sources

UV–Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H2CO3)n Calculations

ChemPhysChem, EarlyView.
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu, Bastian Klein, Chaojiang Zhang, Radu A. Talmazan, Thomas Loerting, Hinrich Grothe, Ralf I. Kaiser, Maren Podewitz   +7 more
wiley   +1 more source