Zobrazeno 1 - 10
of 13
pro vyhledávání: '"T. G. Arshakian"'
Autor:
T. G. Arshakian, Volker Ossenkopf
We propose a statistical tool to compare the scaling behaviour of turbulence in pairs of molecular cloud maps. Using artificial maps with well defined spatial properties, we calibrate the method and test its limitations to ultimately apply it to a se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ade9d939c1ffe14aff7c5b31cfd2d60
http://arxiv.org/abs/1502.04195
http://arxiv.org/abs/1502.04195
Autor:
Malcolm S. Longair, T. G. Arshakian
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 351:727-732
A simple integral relation is obtained for the distribution functions of jet speeds and jet-counterjet flux asymmetries of classical double radio sources. Analytic expressions relating the mean jet speed and the mean jet flux asymmetry, and their var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeaaa1afe46abb654a14b5a33e3ca660
https://doi.org/10.1111/j.1365-2966.2004.07823.x
https://doi.org/10.1111/j.1365-2966.2004.07823.x
AGN reverberate when the broad emission lines respond to changes of the ionizing thermal continuum emission. Reverberation measurements have been commonly used to estimate the size of the broad-line region (BLR) and the mass of the central black hole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9777cbde72c80192df7d662fecbebf20
http://arxiv.org/abs/1411.0164
http://arxiv.org/abs/1411.0164
Autor:
T. G. Arshakian, Matthew L. Lister, Alexander B. Pushkarev, J. L. Richards, Yuri Y. Kovalev, Maurice Cohen, D. C. Homan, Tuomas Savolainen, Eric Clausen-Brown, Talvikki Hovatta, David L. Meier
We study the kinematics of ridge lines on the pc-scale jet of the active galactic nucleus BL Lac. We show that the ridge lines display transverse patterns that move superluminally downstream, and that the moving patterns are analogous to waves on a w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5173f595e6c12098a5546e09cd14e413
http://arxiv.org/abs/1409.3599
http://arxiv.org/abs/1409.3599
Autor:
T. G. Arshakian, R. R. Andreasyan
Publikováno v:
International Astronomical Union Colloquium. 182:175-179
The radio luminosities of pulsars are given as functions of their period and the time variation of the period. The parameters of that dependence are calculated and independent distances are determined for pulsars. The average electron densities towar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f693a9d832bb8b69dfd14acc0989d54
https://doi.org/10.1017/s0252921100000920
https://doi.org/10.1017/s0252921100000920
Publikováno v:
Astronomy and astrophysics, 559:A27. EDP Sciences
Context. Low-frequency radio continuum observations are best suited to search for radio halos of inclined galaxies. Polarization measurements at low frequencies allow the detection of small Faraday rotation measures caused by regular magnetic fields
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15b78f5545ec7c97b15fbce28e34b4df
http://esoads.eso.org/abs/2013A&A...559A..27G
http://esoads.eso.org/abs/2013A&A...559A..27G
Autor:
Anne Lähteenmäki, Esko Valtaoja, A. Lobanov, A. Carraminana, Merja Tornikoski, V. H. Chavushyan, Jonathan León-Tavares, T. G. Arshakian, L. C. Popovic altaffilmark, L. Carrasco, Víctor M. Patiño-Álvarez
We report the detection of a statistically significant flare-like event in the Mg II\lambda 2800\AA\ emission line of 3C 454.3 during the outburst of autumn 2010. The highest levels of emission line flux recorded over the monitoring period (2008 - 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0aea7f16a1d8670abcdebe60eb91653b
https://aaltodoc.aalto.fi/handle/123456789/21848
https://aaltodoc.aalto.fi/handle/123456789/21848
Autor:
R. R. Andreasyan, T. G. Arshakian
Publikováno v:
Astrophysics. 38:325-328
Radio luminosities of pulsars depend on their periods and derivatives of periods. The parameters of these dependences and the independent distances for 288 pulsars are determined. Known dispersion measures are used for determination of the mean elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10730bdec20e4b2cb49c601436894f29
https://doi.org/10.1007/bf02044705
https://doi.org/10.1007/bf02044705
Autor:
J. Leon-Tavares, M. Boettcher, Eduardo Ros, T. G. Arshakian, Matthew L. Lister, J. Torrealba, J. A. Zensus, V. H. Chavushyan
Aims. We use a sample of 83 core-dominated active galactic nuclei (AGN) selected from the MOJAVE (Monitoring of Jets in AGN with VLBA Experiments) radio-flux-limited sample and detected with the Fermi Large Area Telescope (LAT) to study the relations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2314b307c8e5fdc5fc1eec7faf1cab4a
http://arxiv.org/abs/1104.4946
http://arxiv.org/abs/1104.4946
Autor:
T. G. Arshakian
Publikováno v:
ESO Astrophysics Symposia European Southern Observatory ISBN: 9783540397557
I explore a possibility to measure the gravitational redshift (GR) effect in the gravitational field of massive central nuclei residing in active galaxies (AGN). The activity of central nuclei is associated with the bipolar jet ejection of relativist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::679053fb26fb8358b735344a2b6e2a44
https://doi.org/10.1007/978-3-540-39756-4_49
https://doi.org/10.1007/978-3-540-39756-4_49