Zobrazeno 1 - 10
of 1 062
pro vyhledávání: '"Valeri, M"'
Autor:
Hallum, Melissa K., Jorstad, Svetlana G., Larionov, Valeri M., Marscher, Alan P., Joshi, Manasvita, Weaver, Zachary R., Williamson, Karen E., Agudo, Ivan, Borman, George A., Casadio, Carolina, Fuentes, Antonio, Grishina, Tatiana S., Kopatskaya, Evgenia N., Larionova, Elena G., Larionova, Liyudmila V., Morozova, Daria A., Nikiforova, Anna A., Savchenko, Sergey S., Troitsky, Ivan S., Troitskaya, Yulia V., Vasilyev, Andrey A.
Publikováno v:
2022 ApJ 926 180
We present multi-epoch optical spectra of the $\gamma$-ray bright blazar 1156+295 (4C +29.45, Ton 599) obtained with the 4.3~m Lowell Discovery Telescope. During a multi-wavelength outburst in late 2017, when the $\gamma$-ray flux increased to $2.5\t
Externí odkaz:
http://arxiv.org/abs/2202.00061
Autor:
Pasierb, Magdalena, Goyal, Arti, Ostrowski, Michał, Stawarz, Łukasz, Wiita, Paul J., Gopal-Krishna, Larionov, Valeri M., Morozova, Daria A., Itoh, Ryosuke, Alicavus, Fahri, Erdem, Ahmet, Joshi, Santosh, Zola, Staszek, Borman, Georgy A., Grishina, Tatiana S., Kopatskaya, Evgenia N., Larionova, Elena G., Savchenko, Sergey S., Nikiforova, Anna A., Troitskaya, Yulia V., Troitsky, Ivan S., Akitaya, Hiroshi, Kawabata, Miho, Nakaoka, Tatsuya
We present the results of flux density, spectral index, and polarization intra-night monitoring studies of a sample of eight optically bright blazars, carried out by employing several small to moderate aperture (0.4\,m to 1.5\,m diameter) telescopes
Externí odkaz:
http://arxiv.org/abs/1912.05505
Autor:
Weaver, Zachary R., Balonek, Thomas J., Jorstad, Svetlana G., Marscher, Alan P., Larionov, Valeri M., Smith, Paul S., Boni, Samantha J., Borman, George A., Chapman, K. J., Jenks, Leah G., Kopatskaya, Evgenia N., Larionova, Elena G., Morozova, Daria A., Nikiforova, Anna A., Sabyr, Alina, Savchenko, Sergey S., Stahlin, Ryan W., Troitskaya, Yulia V., Troitsky, Ivan S., Zhang, Saiyang
The quasar 3C454.3 underwent a uniquely-structured multi-frequency outburst in June 2016. The blazar was observed in the optical $R$ band by several ground-based telescopes in photometric and polarimetric modes, at $\gamma$-ray frequencies by the \em
Externí odkaz:
http://arxiv.org/abs/1903.04587
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
Publikováno v:
Nature Comm. Phys. 1:77 (2018)
One of the most profound aspects of the standard model of particle physics, the mechanism of confinement binding quarks into hadrons, is not sufficiently understood. The only known semiclassical mechanism of confinement, mediated by chromo-electric s
Externí odkaz:
http://arxiv.org/abs/1807.01984
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
Autor:
Williamson, Karen E., Jorstad, Svetlana G., Marscher, Alan P., Larionov, Valeri M., Smith, Paul S., Agudo, Iván, Arkharov, Arkady A., Blinov, Dmitry A., Casadio, Carolina, Efimova, Natalia V., Gómez, José L., Hagen-Thorn, Vladimir A., Joshi, Manasvita, Konstantinova, Tatiana S., Kopatskaya, Evgenia N., Larionova, Elena G., Larionova, Liudmilla V., Malmrose, Michael P., McHardy, Ian M., Molina, Sol N., Morozova, Daria A., Schmidt, Gary D., Taylor, Brian W., Troitsky, Ivan S.
We present $\gamma$-ray, X-ray, ultraviolet, optical, and near-infrared light curves of 33 $\gamma$-ray bright blazars over four years that we have been monitoring since 2008 August with multiple optical, ground-based telescopes and the Swift satelli
Externí odkaz:
http://arxiv.org/abs/1406.2719
Autor:
Lorenzetti, Dario, Antoniucci, Simone, Giannini, Teresa, Causi, Gianluca Li, Di Paola, Andrea, Arkharov, Arkady A., Larionov, Valeri M.
We present the collection of all the mid- and far-IR observations (3-170 um) of the young eruptive variable PV Cep available so far in the literature. These data allow us to confirm that flux variability is a prominent feature at mid-IR wavelength (3
Externí odkaz:
http://arxiv.org/abs/1405.7525
Autor:
Jorstad, Svetlana G., Marscher, Alan P., Smith, Paul S., Larionov, Valeri M., Agudo, Iván, Gurwell, Mark, Wehrle, Ann E., Lähteenmäki, Anne, Nikolashvili, Maria G., Schmidt, Gary D., Arkharov, Arkady A., Blinov, Dmitry A., Blumenthal, Kelly, Casadio, Carolina, Chigladze, Revaz A., Efimova, Natatia V., Eggen, Joseph R., Gómez, José L., Grupe, Dirk, Hagen-Thorn, Vladimir A., Joshi, Manasvita, Kimeridze, Givi N., Konstantinova, Tatiana S., Kopatskaya, Evgenia N., Kurtanidze, Omar M., Kurtanidze, Sofia O., Larionova, Elena G., Larionova, Liudmilla V., Lorand, Sigua A., MacDonald, Nicholas R., Maune, Jeremy D., McHardy, Ian M., Miller, H. Richard, Molina, Sol N., Morozova, Daria A., Scott, Terri, Taylor, Brian, Tornikoski, Merja, Troitsky, Ivan S., Thum, Clemens, Walker, Gary, Williamson, Karen E., Sallum, Stephanie, Consiglio, Santina, Strelnitski, Vladimir
We analyze the multifrequency behavior of the quasar 3C 454.3 during three prominent \gamma-ray outbursts: 2009 Autumn, 2010 Spring, and 2010 Autumn. The data reveal a repeating pattern, including a triple flare structure, in the properties of each \
Externí odkaz:
http://arxiv.org/abs/1307.2522