Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Molina Sol"'
Publikováno v:
EPJ Web of Conferences, Vol 61, p 08003 (2013)
NRAO 150 is a very bright millimeter to radio quasar at redshift z=1.52 for which ultra-highresolution VLBI monitoring has revealed a counter-clockwise jet-position-angle wobbling at an angular speed ~11°/yr in the innermost regions of the jet. In t
Externí odkaz:
https://doaj.org/article/6bf90041908b4e46bf64225038cdae8d
Autor:
Jorstad Svetlana, Marscher Alan, Larionov Valeri, Gómez José L., Agudo Iván, Angelakis Emmanouil, Casadio Carolina, Gurwell Mark, Hovatta Talvikki, Joshi Manasvita, Fuhrmann Lars, Karamanavis Vassilis, Lähteenmäki Anne, Molina Sol, Morozova Daria, Myserlis Ioannis, Troitsky Ivan, Ungerechts Hans, Anton Zensus J.
Publikováno v:
EPJ Web of Conferences, Vol 61, p 04003 (2013)
The Fermi LAT detected an increase in γ-ray activity of the quasar 0836+710 (z=2.17) in Spring 2011 that culminated in a sharp γ-ray flare at the end of 2011 when the source reached a flux of 2.9×10−6 phot s−1cm−2 at 0.1-200 GeV. We monitor
Externí odkaz:
https://doaj.org/article/86ca7d29f8d749a9bbeda407b89f18fb
Autor:
Sasada, Mahito, Jorstad, Svetlana, Marscher, Alan P., Bala, Vishal, Joshi, Manasvita, MacDonald, Nicholas R., Malmrose, Michael P., Larionov, Valeri M., Morozova, Daria A., Troitsky, Ivan S., Agudo, Iván, Casadio, Carolina, Gómez, José L., Molina, Sol N., Itoh, Ryosuke
We analyze the linear polarization of the relativistic jet in BL Lacertae object OJ~287 as revealed by multi-epoch Very Long Baseline Array (VLBA) images at 43 GHz and monitoring observations at optical bands. The electric-vector position angle (EVPA
Externí odkaz:
http://arxiv.org/abs/1807.11145
Autor:
Jorstad, Svetlana G., Marscher, Alan P., Morozova, Daria A., Troitsky, Ivan S., Agudo, Iván, Casadio, Carolina, Foord, Adi, Gómez, José L., MacDonald, Nicholas R., Molina, Sol N., Lähteenmäki, Anne, Tammi, Joni, Tornikoski, Merja
Publikováno v:
The Astrophysical Journal, Volume 846, Issue 2, article id. 98, 35 pp. (2017)
We analyze the parsec-scale jet kinematics from 2007 June to 2013 January of a sample of $\gamma$-ray bright blazars monitored roughly monthly with the Very Long Baseline Array at 43~GHz. In a total of 1929 images, we measure apparent speeds of 252 e
Externí odkaz:
http://arxiv.org/abs/1711.03983
Autor:
Thum, Clemens, Agudo, Ivan, Molina, Sol N., Casadio, Carolina, Gomez, Jose Luis, Morris, David, Ramakrishnan, Venkatessh, Sievers, Albrecht
We analyse the circular polarisation data accumulated in the first 7 years of the POLAMI project introduced in an accompanying paper (Agudo et al.). In the 3mm wavelength band, we acquired more than 2600 observations, and all but one of our 37 sample
Externí odkaz:
http://arxiv.org/abs/1709.08743
Autor:
Agudo, Ivan, Thum, Clemens, Molina, Sol N., Casadio, Carolina, Wiesemeyer, Helmut, Morris, David, Paubert, Gabriel, Gomez, Jose L., Kramer, Carsten
We describe the POLAMI program for the monitoring of all four Stokes parameters of a sample of bright radio-loud active galactic nuclei with the IRAM 30m telescope at 3.5 and 1.3mm. The program started in October 2006 and accumulated, until August 20
Externí odkaz:
http://arxiv.org/abs/1709.08742
Autor:
Agudo, Ivan, Thum, Clemens, Ramakrishnan, Venkatessh, Molina, Sol N., Casadio, Carolina, Gomez, Jose L.
We report on the first results of the POLAMI program, a simultaneous 3.5 and 1.3mm full-Stokes-polarisation monitoring of a sample of 36 of the brightest active galactic nuclei in the northern sky with the IRAM 30m Telescope. Through a systematic sta
Externí odkaz:
http://arxiv.org/abs/1709.08744
In this paper we describe a new approach for mm-VLBI calibration that provides bona-fide astrometric alignment of the mm-wavelength images from a single source, for the measurement of frequency dependent effects, such as `core-shifts' near the black
Externí odkaz:
http://arxiv.org/abs/1612.02958
Autor:
Casadio, Carolina, Gómez, José L., Jorstad, Svetlana G., Marscher, Alan P., Larionov, Valeri M., Smith, Paul S., Gurwell, Mark A., Lähteenmäki, Anne, Agudo, Iván, Molina, Sol N., Bala, Vishal, Joshi, Manasvita, Taylor, Brian, Williamson, Karen E., Arkharov, Arkady A., Blinov, Dmitry A., Borman, George A., Di Paola, Andrea, Grishina, Tatiana S., Hagen-Thorn, Vladimir A., Itoh, Ryosuke, Kopatskaya, Evgenia N., Larionova, Elena G., Larionova, Liudmila V., Morozova, Daria A., Rastorgueva-Foi, Elizaveta, Sergeev, Sergey G., Tornikoski, Merja, Troitsky, Ivan S., Thum, Clemens, Wiesemeyer, Helmut
We perform a multi-wavelength polarimetric study of the quasar CTA 102 during an extraordinarily bright $\gamma$-ray outburst detected by the {\it Fermi} Large Area Telescope in September-October 2012 when the source reached a flux of F$_{>100~\mathr
Externí odkaz:
http://arxiv.org/abs/1508.07254
Autor:
Ramakrishnan, Venkatessh, León-Tavares, Jonathan, Rastorgueva-Foi, Elizaveta A., Wiik, Kaj, Jorstad, Svetlana G., Marscher, Alan P., Tornikoski, Merja, Agudo, Iván, Lähteenmäki, Anne, Valtaoja, Esko, Aller, Margo F., Blinov, Dmitry A., Casadio, Carolina, Efimova, Natalia V., Gurwell, Mark A., Gómez, José L., Hagen-Thorn, Vladimir A., Joshi, Manasvita, Järvelä, Emilia, Konstantinova, Tatiana S., Kopatskaya, Evgenia N., Larionov, Valeri M., Larionova, Elena G., Larionova, Liudmilla V., Lavonen, Niko, MacDonald, Nicholas R., McHardy, Ian M., Molina, Sol N., Morozova, Daria A., Nieppola, Elina, Tammi, Joni, Taylor, Brian W., Troitsky, Ivan S.
Publikováno v:
MNRAS, vol. 445, pp. 1636-1646 (2014)
The blazar 1156+295 was active at gamma-ray energies, exhibiting three prominent flares during the year 2010. Here, we present results using the combination of broadband (X-ray through mm single dish) monitoring data and radio band imaging data at 43
Externí odkaz:
http://arxiv.org/abs/1409.2542