Zobrazeno 1 - 10
of 192
pro vyhledávání: '"K. I. Kellermann"'
Autor:
M. L. Lister, D. C. Homan, K. I. Kellermann, Y. Y. Kovalev, A. B. Pushkarev, E. Ros, T. Savolainen
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 1, p 34 (2023)
Externí odkaz:
https://doaj.org/article/726e55888ded4d489bdb827208001e2b
Autor:
Leonid Gurvits, Yu. N. Pariiskii, A.A. Konovalenko, Nikolai N. Kolachevsky, Rustam D. Dagkesamanskii, Yurii Yu. Balega, Anatolii M. Cherepashchuk, Lev Zelenyi, Yu. Yu. Kovalev, K. I. Kellermann, Igor D. Novikov, Vladimir Gdalevich Kurt
Publikováno v:
Physics-Uspekhi. 63:622-624
Autor:
D. C. Homan, M. H. Cohen, T. Hovatta, K. I. Kellermann, Y. Y. Kovalev, M. L. Lister, A. V. Popkov, A. B. Pushkarev, E. Ros, T. Savolainen
We present multi-epoch, parsec-scale core brightness temperature observations of 447 AGN jets from the MOJAVE and 2cm Survey programs at 15 GHz from 1994 to 2019. The brightness temperature of each jet over time is characterized by its median value a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90715a5b01f27a40cad6b35e526fa5e0
Autor:
M. L. Lister, D. C. Homan, K. I. Kellermann, Y. Y. Kovalev, A. B. Pushkarev, E. Ros, T. Savolainen
Publikováno v:
The Astrophysical Journal. 923:30
We have analyzed the parsec-scale jet kinematics of 447 bright radio-loud active active galactic nuclei (AGN), based on 15 GHz Very Long Baseline Array (VLBA) data obtained between 1994 August 31 and 2019 August 4. We present new total intensity and
Autor:
Tuomas Savolainen, Anthony C. S. Readhead, Walter Max-Moerbeck, Matthew L. Lister, Yuri Y. Kovalev, Sebastian Kiehlmann, K. I. Kellermann, Talvikki Hovatta, Daniel C. Homan, Eduardo Ros, Alexander B. Pushkarev
We present results from a parsec-scale jet kinematics study of 409 bright radio-loud AGNs based on 15 GHz VLBA data obtained between 1994 August 31 and 2016 December 26 as part of the 2cm VLBA survey and MOJAVE programs. We tracked 1744 individual br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15721fd10941db236fe35ca0728d00a5
http://arxiv.org/abs/1902.09591
http://arxiv.org/abs/1902.09591
Autor:
Tessa Vernstrom, J. V. Wall, Richard A. Perley, W. D. Cotton, Douglas Scott, James J. Condon, K. I. Kellermann
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 462:2934-2949
This is the second of two papers describing the observations and source catalogues derived from sensitive 3-GHz images of the Lockman Hole North using the Karl G. Jansky Very Large Array. We describe the reduction and cataloguing process, which yield
Autor:
K. I. Kellermann, Elena Orlando, J. Dowell, Tessa Vernstrom, Dale J. Fixsen, B. Harms, Jack Singal, Eric J. Murphy, J. Haider, David R. Ballantyne, Marco Ajello, James J. Condon, E. Bunn, Philipp Mertsch, R. Monsalve, Tim Linden, Nicolao Fornengo, Alan J. Kogut, Evan Jones, Douglas Scott, Marco Regis, L. Xu, Gilbert Holder
We summarize the radio synchrotron background workshop that took place July 19-21, 2017 at the University of Richmond. This first scientific meeting dedicated to the topic was convened because current measurements of the diffuse radio monopole reveal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f67477a5601cc871129a4744115269f2
http://hdl.handle.net/2318/1696671
http://hdl.handle.net/2318/1696671
Autor:
Andrei Lobanov, Kirill Sokolovsky, J. A. Zensus, J. M. Anderson, P. A. Voitsik, L. Yu. Petrov, Tapasi Ghosh, Chris Salter, Frank D. Ghigo, Alex Kraus, Jonathan D. Romney, U. Bach, Michael D. Johnson, Mikhail M. Lisakov, Yuri Y. Kovalev, Leonid I. Gurvits, Yu. A. Kovalev, David L. Jauncey, N. S. Kardashev, K. I. Kellermann
Publikováno v:
The Astrophysical Journal Letters
Inverse Compton cooling limits the brightness temperature of the radiating plasma to a maximum of $10^{11.5}$ K. Relativistic boosting can increase its observed value, but apparent brightness temperatures much in excess of $10^{13}$ K are inaccessibl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d16f05fe87887b1d7084cf0ba277ce04
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:1586891
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:1586891
Autor:
M. Bonzini, Francesca Matteucci, Yongquan Xue, Paolo Padovani, B. Luo, K. I. Kellermann, Vincenzo Mainieri, N. Miller, Maurizio Paolillo, W. N. Brandt, S. Vattakunnel, Paolo Tozzi, L. Vincoletto
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 420:2190-2208
In order to trace the instantaneous star formation rate at high redshift, and hence help understanding the relation between the different emission mechanisms related to star formation, we combine the recent 4 Ms Chandra X-ray data and the deep VLA ra
Autor:
K. I. Kellermann, A. M. Matthews, Douglas Scott, Richard A. Perley, W. D. Cotton, Tessa Vernstrom, J. V. Wall, J. J. Condon, Mark Lacy
Publikováno v:
The Astrophysical Journal. 856:67