Results 91 to 100 of about 37,310 (215)

STUDY OF EFFECTS OF LUNAR TIDAL WAVE PASSAGE IN UPPER ATMOSPHERE OF EARTH ACCORDING TO MONITORING DATA AT RADIO TELESCOPE «URAN-4» RI NANU

Odessa Astronomical Publications, 2019
The paper examines data on the effects of the lunar tidal wave in the Earth 's upper atmosphere on the observed flux of radio sources. Monitoring of the fluxes of powerful galactic and extragalactic radio sources is carried out at the URAN-4 radio ...
M. I. Ryabov, L. I. Sobitnyak
doaj   +1 more source

A Census of the Deep Radio Sky with the VLA. I. 10 GHz Survey of the GOODS-N Field

The Astrophysical Journal
We present the first high-resolution, high-frequency radio continuum survey that fully maps an extragalactic deep field: the 10 GHz survey of the Great Observatories Origins Deep Survey-North (GOODS-N) field. This is a Large Program of the Karl G. Jansky
Eric F. Jiménez-Andrade, Eric J. Murphy, Emmanuel Momjian, James J. Condon, Ranga-Ram Chary, Russ Taylor, Mark Dickinson   +6 more
doaj   +1 more source

Strange and Odd Morphology Extragalactic Radio Sources (STROMERSs): A Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) Look at the Strange and Odd Radio Sources

Universe
We report the identification of an extremely rare and peculiar set of irregular radio sources, termed “STROMERSs” (STRange and Odd Morphology Extragalactic Radio Sources).ingThe irregular radio sources with very anomalous morphologies that make them ...
Soumen Kumar Bera, Tapan K. Sasmal, Soumen Mondal, Taotao Fang, Xuelei Chen   +4 more
doaj   +1 more source

Optical and radio properties of extragalactic radio sources with recurrent jet activity

, 2017
We present a sample of 74 radio sources with recurrent jet activity. The sample consists of 67 galaxies, 2 quasars and 5 unidentified sources, selected from the published data or are newly recognized.
Jamrozy, M., Kozieł-Wierzbowska, D., Kuźmicz, A., Weżgowiec, M.   +3 more
core   +1 more source

Source structure errors in radio-interferometric clock synchronization for ten measured distributions [PDF]

The effects of source structure on radio interferometry measurements were investigated. The brightness distribution measurements for ten extragalactic sources were analyzed.
Thomas, J. B.
core   +1 more source

Extragalactic source contributions to arcminute-scale Cosmic Microwave Background anisotropies

, 2004
The possible contributions of the various classes of extragalactic sources (including, in addition to the canonical radio sources, GHz Peaked Spectrum sources, advection-dominated sources, starburst galaxies, high-redshift proto-spheroidal galaxies) to ...
Bennett, Blain, Blake, Bressan, Chapman, Ciaramella, Cooray, Dallacasa, Dawson, De Zotti, De Zotti, De Zotti, Dunlop, Dupac, Dupac, F. Argüeso, Fomalont, Fomalont, Franceschini, G. De Zotti, G. L. Granato, Galliano, Gnedin, González-Nuevo, Granato, Granato, Greve, Griffiths, Gruppioni, Haiman, Impey, J. González-Nuevo, Komatsu, Kuo, L. Silva, L. Toffolatti, Loan, M. Negrello, Magliocchetti, Mason, Myers, Narayan, Negrello, Perna, Perrotta, Pierpaoli, Pozzi, Reach, Readhead, Rebolo, Ricci, Richards, Scott, Scott, Silva, Silva, Spergel, Teräsranta, Tinti, Toffolatti, Van Waerbeke, Waldram, Windhorst, Zhang   +63 more
core   +1 more source

A Multimechanism Hybrid Model of Peaked-spectrum Radio Sources

The Astrophysical Journal
Peaked-spectrum (PS) sources exhibit turnover characteristics in their broad radio spectra. However, the mechanism underlying this phenomenon remains elusive.
Guang-Chen Sun, Yichao Li, Furen Deng, Yanping Cong, Fangxia An, Jiajun Zhang, Yougang Wang, Xin Zhang, Xuelei Chen   +8 more
doaj   +1 more source

Radio-Excess IRAS Galaxies: PMN/FSC Sample Selection

, 2003
A sample of 178 extragalactic objects is defined by correlating the 60 micron IRAS FSC with the 5 GHz PMN catalog. Of these, 98 objects lie above the radio/far-infrared relation for radio-quiet objects.
Altschuler D. R., Bajaja E., Bennett A. S., Black A. R. S., Blundell K. M., Capetti A., Carvalho J. C., Carvalho J. C., Carvalho J. C., Catherine L. Drake, Cram L. E., de Grijp M. H. K., de Grijp M. H. K., de Jong T., Fanaroff B. L., Fanti C., Fanti C., Fanti C., Fanti R., Heckman T. M., Kuhr H., Leahy J. P., Michael A. Dopita, Miller L., Mirabel I. F., Morganti R., Morganti R., Norris R. P., Owsianik I., O’Dea C. P., O’Dea C. P., Pedler A., Peter J. McGregor, Phillips R. B., Roy A. L., Sadler E. M., Saikia D. J., Slee O. B., Sopp H. M., Spencer R. E., van der Kruit P. C., Veron-Cetty M.-P., W. J. M. van Breugel, Wunderlich E., Zheng Z.   +44 more
core   +1 more source

Optical Spectra of Extragalactic Radio Sources [PDF]

Highlights of Astronomy, 1968
Extragalactic radio sources can be grouped spectroscopically into those that show absorption lines produced by a stellar population (e.g. the nearer radio galaxies, and some more distant ones, usually of D or E type) and those that show only lines (usually in emission) produced by low-density gas (e.g. QSO’s and many N-type galaxies).
openaire   +1 more source

Constraining the Faint-end Slope of the Fast Radio Burst Energy Function Using CHIME/FRB Catalog-1 and Local Volume Galaxies

The Astrophysical Journal
Despite hundreds of detected fast radio bursts (FRBs), the faint-end slope ( γ ) of their energy distribution remains poorly constrained, hindering understanding of whether bright, cosmological FRBs and faint, Galactic magnetar SGR 1935+2154-like bursts ...
Mohit Bhardwaj, Victoria M. Kaspi, K. W. Masui, B. M. Gaensler, Adaeze L. Ibik, Mawson W. Sammons   +5 more
doaj   +1 more source