Results 41 to 50 of about 156,542 (187)
The AMIGA sample of isolated galaxies. VI. Radio continuum properties of isolated galaxies: a very radio quiet sample [PDF]
, 2008 The study of the radio properties of the AMIGA sample is intended to characterize the radio continuum emission for a sample least affected by local environment, thus providing a reference against which less isolated and interacting samples can be compared.
arxiv +1 more source
Deep Radio Continuum Studies with the SKA: Evolution of Radio AGN Populations [PDF]
New Astron.Rev. 48 (2004) 1187-1193, 2004 Radio emission is insensitive to dust obscuration, and the breadth of the radio luminosity function ensures that sources are detected over a wide range of redshifts at all radio flux densities. As a result, radio continuum observations are an efficient and unbiased probe of both nuclear (AGN) and star-forming activity over all cosmic epochs.
arxiv +1 more source
The Astrophysical Journal, 2023 Attempts to trace star formation with rest-frame UV/optical observations at redshifts z > 2 are affected by the presence of potentially substantial, yet uncertain, dust attenuation.
D. van der Vlugt +8 more
doaj +1 more source
New 20-cm radio-continuum study of the small Magellanic cloud - part III: Compact Hii regions [PDF]
Serbian Astronomical Journal, 2012 We present and discuss a new catalogue of 48 compact Hii regions in the Small Magellanic Cloud (SMC) and a newly created deep 1420 MHz (λ=20 cm) radio-continuum image of the N19 region located in the southwestern part of the SMC.
Wong G.F. +5 more
doaj +1 more source
Core Radio and Optical Emission in Nearby FR I Radio Galaxies [PDF]
, 2001 In this paper we analyze the relation between radio, optical continuum and Halpha+[NII] emission from the cores of a sample of 21 nearby Fanaroff & Riley type I galaxies as observed with the VLBA and HST. The emission arises inside the inner tens of parsec of the galaxies.
arxiv +1 more source
Unveiling the Emission Mechanisms of Blazar PKS 1510-089. I. Multiwavelength Variability
The Astrophysical JournalThe flat spectrum radio quasar PKS 1510-089 is one of the most active blazars in γ -rays, exhibiting phases of very high activity. This study investigates its variability over a decade across a wide range of wavelengths, from radio to γ -rays.
Alfredo Amador-Portes +3 more
doaj +1 more source
A model of so-called "Zebra" emissions in solar flare radio burst continua [PDF]
Annales Geophysicae, 2011 A simple mechanism for the generation of electromagnetic "Zebra" pattern emissions is proposed. "Zebra" bursts are regularly spaced narrow-band radio emissions on the otherwise broadband radio continuum emitted by the active solar corona.
R. A. Treumann +4 more
doaj +1 more source
Dressing a naked quasar: star formation and AGN feedback in HE0450-2958 [PDF]
, 2007 We present Australia Telescope Compact Array radio continuum observations of the quasar/galaxy system HE0450-2958. An asymetric triple linear morphology is observed, with the central radio component coincident with the quasar core and a second radio component associated with a companion galaxy at a projected distance of 7kpc from the quasar. The system
arxiv +1 more source
Warm molecular gas in galaxy-galaxy merger NGC6090 [PDF]
Astrophys.J. 616 (2004) L67-L70, 2004 We present observations of the CO 2-1 and 3-2 transitions toward the merging galaxies of NGC6090 with the Submillimeter Array (SMA) (The Submillimeter Array (SMA) is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics, and is funded by the Smithsonian Institution and the ...
arxiv +1 more source
On the Origin of the X-Ray Emission in Heavily Obscured Compact Radio Sources
The Astrophysical JournalX-ray continuum emission of active galactic nuclei (AGNs) may be reflected by circumnuclear dusty tori, producing prominent fluorescence iron lines at X-ray frequencies.
Dominika Ł. Król +6 more
doaj +1 more source