Zobrazeno 1 - 10
of 2 387
pro vyhledávání: '"X-shaped radio galaxy"'
Autor:
Ashok K. Singal, Shweta Srivastava
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 493:3811-3824
We present low-frequency, GMRT observations at 240, 610 and 1300 MHz of IC~711, a narrow angle tail (NAT) radio galaxy. The total angular extent of the radio emission, $\sim 22$ arcmin, corresponds to a projected linear size of $\sim 900$ kpc, making
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e76499e83f2e5352ff60bad5e9ead747
https://doi.org/10.1093/mnras/staa520
https://doi.org/10.1093/mnras/staa520
Autor:
Claudio Maccone
Galactic Internet may already exist, if all stars are exploited as gravitational lenses. In fact, the gravitational lens of the Sun is a well-known astrophysical phenomenon predicted by Einstein's general theory of relativity. It implies that, if we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bd55f1886a3f506ba4995120cc8d542
http://arxiv.org/abs/2103.11483
http://arxiv.org/abs/2103.11483
Autor:
Kshitij Thorat, Sarah V. White, Oleg Smirnov, Gyula I. G. Józsa, B. S. Frank, B. L. Fanaroff, T. Mauch, W. D. Cotton, Fernando Camilo, V. Krishnan, James J. Condon, Nadeem Oozeer, R.S. Kupa, L. Bester, Marcellin Atemkeng, Roger Deane
We present MeerKAT 1.28 GHz total-intensity, polarization, and spectral-index images covering the giant (projected length $l \approx 1.57$~Mpc) X-shaped radio source PKS~2014$-$55 with an unprecedented combination of brightness sensitivity and angula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d165c861affc3162113a5087cf5d29bc
http://arxiv.org/abs/2005.02723
http://arxiv.org/abs/2005.02723
Autor:
V. S. Artyukh, V. S. Nedora
Publikováno v:
Astrophysics. 60:313-324
Estimating the physical parameters of nonuniform radio sources in active galactic nuclei (AGN) requires knowledge of the angular dimensions of radio sources at the low frequencies where a steep slope (cutoff) in the low-frequency spectrum (opacity re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a601009f8976fb0c1fd97da6e08ed664
https://doi.org/10.1007/s10511-017-9485-6
https://doi.org/10.1007/s10511-017-9485-6
Autor:
D. I. Solovyov, O. V. Verkhodanov
Publikováno v:
Astrophysical Bulletin. 72:217-223
We suggest a method and build a model of radio galaxy distribution over the sphere using data from the WENSS catalogs and standard radio count models by Condon. We calculate the angular power spectrum of the contribution of extended radio galaxies in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6a558b82241ed95a0c19a0029089251
https://doi.org/10.1134/s1990341317030117
https://doi.org/10.1134/s1990341317030117
Autor:
Anton A. Lipovka, Neonila M. Lipovka
Publikováno v:
St. Petersburg Polytechnical University Journal: Physics and Mathematics. 3:164-169
In the present work, the optical identification of a group of radio sources located in the Aquarius and Cetus constellations in a field with the size of 1.2 square degrees has been carried out. Ten radio sources under investigation were identified wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bad0542ead6a12d20823f235bf9bb1a
https://doi.org/10.1016/j.spjpm.2017.06.003
https://doi.org/10.1016/j.spjpm.2017.06.003
Autor:
Yu. N. Parijskij, A. V. Temirova, Alexander I. Kopylov, V. N. Komarova, Olga P. Zhelenkova, O. V. Verhodanov
Publikováno v:
Astrophysical Bulletin. 72:93-99
The “Big Trio” program is conducted at the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) aiming to investigate a sample of sources with steep and ultra-steep spectra fromthe RCcatalog obtained on the basis of obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfadba54e6b9c1d621c30ce57abd7d8e
https://doi.org/10.1134/s1990341317020018
https://doi.org/10.1134/s1990341317020018
Autor:
Mark Birkinshaw, Diana M Worrall
Publikováno v:
Worrall, D M & Birkinshaw, M 2017, ' A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493 ', Monthly Notices of the Royal Astronomical Society, vol. 467, no. 3, pp. 2903-2912 . https://doi.org/10.1093/mnras/stx275
We present new X-ray (Chandra) and radio (ATCA) observations of the z=0.09 radio galaxy PKS B1416-493, a member of the southern equivalent of the 3CRR sample. We find the source to be embedded in a previously unrecognized bright kT=4.6 keV non cool-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53bc8502bd7e52c04d138d1034e4a214
https://doi.org/10.1093/mnras/stx275
https://doi.org/10.1093/mnras/stx275
Autor:
Jason W. T. Hessels, Matthew W. Abruzzo, Michael P. Rupen, H. J. van Langevelde, Scott M. Ransom, Paul Demorest, Sarah Burke-Spolaor, Bryan J. Butler, Zsolt Paragi, P. Scholz, Shami Chatterjee, Benito Marcote, V. M. Kaspi, Maura McLaughlin, A. Keimpema, Slavko Bogdanov, Laura Spitler, Andrew Seymour, Geoffrey C. Bower, C. G. Bassa, James M. Cordes, T. J. W. Lazio, Robert Wharton, Casey J. Law, Shriharsh P. Tendulkar
Publikováno v:
Nature
NASA Astrophysics Data System
Nature, 541, 58-61
Nature, 541(7635), 58-61. Nature Publishing Group
NASA Astrophysics Data System
Nature, 541, 58-61
Nature, 541(7635), 58-61. Nature Publishing Group
Fast radio bursts are astronomical radio flashes of unknown physical nature with durations of milliseconds. Their dispersive arrival times suggest an extragalactic origin and imply radio luminosities orders of magnitude larger than any other kind of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e825afb8f26799204f1d6fe9ba8013b0
https://doi.org/10.1038/nature20797
https://doi.org/10.1038/nature20797
Context. X-shaped radio galaxies (XRGs) exhibit a pair of bright primary lobes and a pair of weak secondary lobes (wings), which are oriented with an angle that gives the structure a cross-like shape. Though several theoretical models have been propo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::928d302284afa7b48e68636aab5f436a
http://hdl.handle.net/11585/716132
http://hdl.handle.net/11585/716132