English
Related papers

Related papers: Automated Cross-identifying Radio to Infra-red Sur…

200 papers

The application of multi-wavelength selection techniques is crucial for discovering a complete and unbiased set of Active Galactic Nuclei (AGNs). Here, we select a sample of 72 AGN candidates in the Extended Groth Strip (EGS) using deep…

The Australia Telescope Compact Array (ATCA) has been used at 1.38 and 2.38 GHz to survey seven southern Abell clusters of galaxies with high X-ray luminosities: A2746, A2837, A3126, A3216, A3230, A3827 and A3836. The clusters have also…

Astrophysics · Physics 2009-11-13 O. B. Slee , H. Andernach , V. J. McIntyre , G. S. Tsarevsky

We present a detailed analysis of four of the most widely used radio source finding packages in radio astronomy, and a program being developed for the Australian Square Kilometer Array Pathfinder (ASKAP) telescope. The four packages;…

Instrumentation and Methods for Astrophysics · Physics 2015-06-04 Paul J Hancock , Tara Murphy , Bryan M Gaensler , Andrew Hopkins , James R Curran

We present a method to assess the reliability of the identification of EGRET sources with extragalactic radio sources. We verify that EGRET is detecting the blazar class of AGN. However, many published identifications are found to be…

Astrophysics · Physics 2009-10-28 J. R. Mattox , J. Schachter , L. Molnar , R. C. Hartman , A. R. Patnaik

Gigahertz-Peaked spectrum (GPS) sources are compact active galactic nuclei, presumably young precursors of bright radio sources. The study of GPS radio properties provides information about the features of synchrotron radiation in…

Astrophysics of Galaxies · Physics 2020-01-08 Yu. Sotnikova , T. Mufakharov , E. Majorova , M. Mingaliev , R. Udovitskiy , N. Bursov , T. Semenova

We present the SWIRE Photometric Redshift Catalogue, 1025119 redshifts of unprecedented reliability and accuracy. Our method is based on fixed galaxy and QSO templates applied to data at 0.36-4.5 mu, and on a set of 4 infrared emission…

Radio emission has been detected in a broad variety of stellar objects from all stages of stellar evolution. However, most of our knowledge originates from targeted observations of small samples, which are strongly biased to sources which…

Solar and Stellar Astrophysics · Physics 2015-10-07 G. Umana , C. Trigilio , T. M. O. Franzen , R. P. Norris , P. Leto , A. Ingallinera , C. S. Buemi , C. Agliozzo , F. Cavallaro , L. Cerrigone

This paper presents a new grid-based method for investigating the evolution of the steep-spectrum radio luminosity function, with the aim of quantifying the high-redshift cut-off suggested by previous work. To achieve this, the Combined…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 E. E. Rigby , P. N. Best , M. H. Brookes , J. A. Peacock , J. S. Dunlop , H. J. A. Röttgering , J. V. Wall , L. Ker

The third Fermi Large Area Telescope (LAT) $\gamma$-ray source catalog (3FGL) contains over 1000 objects for which there is no known counterpart at other wavelengths. The physical origin of the $\gamma$-ray emission of those objects is…

High Energy Astrophysical Phenomena · Physics 2017-04-12 F. K. Schinzel , L. Petrov , G. B. Taylor , P. G. Edwards

A new sample of very large angular size radio sources has been selected from the 1.4 GHz VLA surveys: FIRST and NVSS. This sample will be very useful for an observational constraint on the time evolution of double radio sources, especially…

Astrophysics · Physics 2009-11-06 J. Machalski , M. Jamrozy , S. Zola

Infrared-Faint Radio Sources (IFRSs) are an unusual class of objects that are relatively bright at radio wavelengths but have faint or undetected infrared counterparts even in deep surveys. We identify and investigate the nature of IFRSs…

We investigated the archival ground-based VLBI images of the extragalactic radio sources included in both the {\it Wilkinson Microwave Anisotropy Probe (WMAP)} and the {\it Planck} catalogues, and selected 49 bright and compact sources as…

Astrophysics of Galaxies · Physics 2015-06-19 Tao An , Xiaocong Wu , Sandor Frey

We report on a search for steep spectrum radio sources within the 95% confidence error ellipses of the Fermi unassociated sources from the Large Array Telescope (LAT). Using existing catalogs and the newly released GMRT all-sky survey at…

High Energy Astrophysical Phenomena · Physics 2016-07-27 D. A. Frail , K. P. Mooley , P. Jagannathan , H. T. Intema

We present MIPS 24 micron observations of the Hubble Deep Field South taken with the Spitzer Space Telescope. The resulting image is 254 arcmin^2 in size and has a sensitivity ranging between ~12 to ~30 microJy rms, with a median…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-30 M. T. Huynh , E. Gawiser , D. Marchesini , G. Brammer , L. Guaita

We have made a radio survey--the Australia Telescope Low Brightness Survey (ATLBS)--of 8.4 square degrees sky area, using the Australia Telescope Compact Array in the 20-cm band, in an observing mode designed to provide wide-field images…

Astrophysics · Physics 2009-06-23 Ravi Subrahmanyan , R. D. Ekers , Lakshmi Saripalli , E. M. Sadler

We present a new catalogue of mid-IR sources using the AKARI NEP-Deep survey. The InfraRed Camera (IRC) onboard AKARI has a comprehensive mid-IR wavelength coverage with 9 photometric bands at 2 - 24 micron. We utilized all of these bands…

Cosmology and Nongalactic Astrophysics · Physics 2012-01-05 T. Takagi , H. Matsuhara , T. Goto , H. Hanami , M. Im , T. Ishigaki , H. M. Lee , M. Malkan , Y. Ohyama , S. Oyabu , C. P. Pearson , S. Serjeant , T. Wada , G. J. White

We use redshift determinations and spectral analysis of galaxies in the 2dF Galaxy Redshift Survey to study the properties of local radio sources with $S\ge 1$ mJy. 557 objects drawn from the FIRST survey, corresponding to 2.3 per cent of…

The spectral line datacubes obtained from the Square Kilometre Array (SKA) and its precursors, such as the Australian SKA Pathfinder (ASKAP), will be sufficiently large to necessitate automated detection and parametrisation of sources.…

Instrumentation and Methods for Astrophysics · Physics 2015-06-03 Russell Jurek

We used the Australia Telescope Compact Array (ATCA) to obtain 40 GHz and 95 GHz observations of a number of sources that were selected from the Australia Telescope Compact Array 20 GHz (AT20G) survey . The aim of the observations was to…

Astrophysics of Galaxies · Physics 2015-05-19 Paul J. Hancock , Elaine M. Sadler , Elizabeth K. Mahony , Roberto Ricci
‹ Prev 1 8 9 10 Next ›