English
Related papers

Related papers: The EVLA: Prospects for HI

200 papers

We discuss various aspects of centimeter and millimeter wavelength continuum and line observations of high redshift star forming galaxies. Perhaps the most important lesson is that sensitive observations at submm through cm wavelengths…

Astrophysics · Physics 2009-09-25 C. L. Carilli , K. M. Menten , M. S. Yun , F. Bertoldi , F. Owen , A. Dey

The proposed VLA Sky Survey (VLASS) comprises two distinct S-band (2--4 GHz) surveys: (1) All-Sky covering the sky north of -40 deg with rms noise 69 microJy/beam = 1.5 K in the 2.5 arcsec beam and (2) Deep covering 10 square deg with rms…

Instrumentation and Methods for Astrophysics · Physics 2015-02-24 Jim Condon

We have observed 28 sources selected from the 1Jy sample of BL Lac objects (Stickel et al. 1991) with the Very Large Array (VLA) in A, B and D configurations at 1.36, 1.66 and 4.85 GHz, and/or with the Westerbork Synthesis Radio Telescope…

Astrophysics · Physics 2009-10-31 P. Cassaro , C. Stanghellini , M. Bondi , D. Dallacasa , R. Della Ceca , R. A. Zappala`

KaVA (KVN and VERA Array) is a new combined VLBI array with KVN (Korean VLBI Network) and VERA (VLBI Exploration of Radio Astrometry). First, we briefly review the imaging capabilities of KaVA array which actually achieves more than three…

High Energy Astrophysical Phenomena · Physics 2015-04-27 Motoki Kino , Kotaro Niinuma , Guang-Yao Zhao , Bong Won Sohn , KaVA AGN sub working group

We present a high time resolution, multi-frequency linear polarization analysis of Very Large Array (VLA) radio observations during some of the brightest radio flaring (~1 Jy) activity of the 2015 outburst of V404 Cygni. The VLA…

One of the outstanding questions in astronomy today is how gas flows from the circumgalactic medium (CGM) onto the disks of galaxies and then transitions from the diffuse atomic medium into molecular star-forming cores. For studies of the…

Astrophysics of Galaxies · Physics 2018-10-17 D. J. Pisano , F. Walter , S. Stanimirovic

Lyman $\alpha$ (Ly$\alpha$) is now routinely used as a tool for studying high-redshift galaxies and its resonant nature means it can trace neutral hydrogen around star-forming galaxies. Integral field spectrograph measurements of…

The question of whether intelligent life exists elsewhere is one of the fundamental unknowns about our Universe. Over the past decade more than 200 extra-solar planets have been discovered, providing new urgency for addressing this question…

Astrophysics · Physics 2010-10-27 Abraham Loeb , Matias Zaldarriaga

The very long baseline interferometry (VLBI) technique offers angular resolutions superior to any other instruments at other wavelengths, enabling unique science applications of high-resolution imaging of radio sources and high-precision…

Instrumentation and Methods for Astrophysics · Physics 2018-02-06 T. An , B. W. Sohn , H. Imai

We have conducted a deep survey (r.m.s noise 17 microJy) with the Very Large Array (VLA) at 1.4 GHz, with a resolution of 6 arcsec, of a 1 square degree region included in the VIRMOS VLT Deep Survey. In the same field we already have…

The Next Generation Very Large Array will have excellent sensitivity for detecting the thermal emission from massive stars and from red giants. This will allow direct imaging of the winds for a large number of hot massive stars. It will…

Solar and Stellar Astrophysics · Physics 2018-10-17 Thomas J. Maccarone , Saida Caballero-Nieves , Nathan Smith , Nora Luetzgendorf

The Square Kilometre Array will be a revolutionary instrument for the study of gas in the distant Universe. SKA1 will have sufficient sensitivity to detect and image atomic 21 cm HI in individual galaxies at significant cosmological…

Astrophysics of Galaxies · Physics 2014-12-19 J. Wagg , E. Da Cunha , C. L. Carilli , F. Walter , M. Aravena , I. Heywood , J. Hodge , E. Murphy , D. Riechers , M. Sargent , R. Wang

We present a catalog of 246 radio sources found in the central 1 degree of the COSMOS field at 1.4GHz. The VLA pilot project data have a resolution of 1.9"x1.6" and an rms noise limit of ~25-100uJy/beam covering 0.837 sqrdeg. About 20 radio…

The present constraints on fundamental constant variation (\alpha and \mu) obtained in the radio range are reviewed, coming essentially from absorption lines in front of quasars of intermediate to high-z galaxies, through CO, HI, OH, HCO+,…

Cosmology and Nongalactic Astrophysics · Physics 2009-10-06 F. Combes

We present a large-scale clustering analysis of radio galaxies in the Very Large Array (VLA) Faint Images of the Radio Sky at Twenty-cm (FIRST) survey over the Galaxy And Mass Assembly (GAMA) survey area, limited to S1.4 GHz >1 mJy with…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 S. N. Lindsay , M. J. Jarvis , M. G. Santos , M. J. I. Brown , S. M. Croom , S. P. Driver , A. M. Hopkins , J. Liske , J. Loveday , P. Norberg , A. S. G. Robotham

This study presents results on detecting neutral atomic hydrogen (HI) 21cm absorption in the spectrum of PKS1413+135 at redshift $z=0.24670041$. The observation was conducted by FAST, with a spectral resolution of 10 Hz, using 10 minutes of…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-08 Jiangang Kang , Chang-Zhi Lu , TongJie Zhang , Ming Zhu

We present deep 1.4GHz Very Large Array (VLA) radio continuum observations of two ~half square degree fields in the Coma cluster of galaxies. The two fields, "Coma 1" and "Coma 3," correspond to the cluster core and southwest infall region…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 Neal A. Miller , Ann E. Hornschemeier , Bahram Mobasher

We present observations with the Karl G. Jansky Very Large Array (VLA) at 3 GHz toward a sub-field of the XXL-North 25 deg$^{2}$ field targeting the first supercluster discovered in the XXL Survey. The structure has been found at a…

The Very Large Array (VLA) has been used in C-configuration to map an area \~0.3 square degrees at 1.4 GHz with 5sigma sensitivities of 0.305, 0.325, 0.380 and 0.450 mJy/beam over four equal subareas. Radio properties are presented for 62…

‹ Prev 1 4 5 6 7 8 10 Next ›