Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Joshi Manasvita"'
Autor:
Pasham, Dheeraj R., Lucchini, Matteo, Laskar, Tanmoy, Gompertz, Benjamin P., Srivastav, Shubham, Nicholl, Matt, Smartt, Stephen J., Miller-Jones, James C. A., Alexander, Kate D., Fender, Rob, Smith, Graham P., Fulton, Michael D., Dewangan, Gulab, Gendreau, Keith, Coughlin, Eric R., Rhodes, Lauren, Horesh, Assaf, van Velzen, Sjoert, Sfaradi, Itai, Guolo, Muryel, Segura, N. Castro, Aamer, Aysha, Anderson, Joseph P., Arcavi, Iair, Brennan, Sean J., Chambers, Kenneth, Charalampopoulos, Panos, Chen, Ting-Wan, Clocchiatti, A., de Boer, Thomas, Dennefeld, Michel, Ferrara, Elizabeth, Galbany, Lluis, Gao, Hua, Gillanders, James H., Goodwin, Adelle, Gromadzki, Mariusz, Huber, M, Jonker, Peter G., Joshi, Manasvita, Kara, Erin, Killestein, Thomas L., Kosec, Peter, Kocevski, Daniel, Leloudas, Giorgos, Lin, Chien-Cheng, Margutti, Raffaella, Mattila, Seppo, Moore, Thomas, Muller-Bravo, Tomas, Ngeow, Chow-Choong, Oates, Samantha, Onori, Francesca, Pan, Yen-Chen, Perez-Torres, Miguel, Rani, Priyanka, Remillard, Ronald, Ridley, Evan J., Schulze, Steve, Sheng, Xinyue, Shingles, Luke, Smith, Ken W., Steiner, James, Wainscoat, Richard, Wevers, Thomas, Yang, Sheng
A black hole can launch a powerful relativistic jet after it tidally disrupts a star. If this jet fortuitously aligns with our line of sight, the overall brightness is Doppler boosted by several orders of magnitude. Consequently, such on-axis relativ
Externí odkaz:
http://arxiv.org/abs/2211.16537
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
Publikováno v:
EPJ Web of Conferences, Vol 61, p 05004 (2013)
The location of γ-ray emission in blazar jets has remained elusive as wetry to understand jet emission despite the extensive multiwavelength campaigns and vigorous theoretical efforts to understand the multiwavelength spectra. The synergy between mu
Externí odkaz:
https://doaj.org/article/c37bbc6cc8844fee8a36c8f5893775e5
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
We compare the rise and decay timescales of $\sim$200 long-term ($\sim$weeks-months) GeV and R-band outbursts and $\sim$25 short-term ($\sim$hr-day) GeV flares in a sample of 10 blazars using light curves from the Fermi-LAT and the Yale/SMARTS monito
Externí odkaz:
http://arxiv.org/abs/1810.06585
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:
Galaxies 4, 45 (2016)
The knowledge of the structure of the magnetic field inside a blazar jet, as deduced from polarization observations at radio to optical wavelengths, is closely related to the formation and propagation of relativistic jets that result from accretion o
Externí odkaz:
http://arxiv.org/abs/1610.06643
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
Blazars exhibit flares across the electromagnetic spectrum. Many $\gamma$-ray flares are highly correlated with flares detected at optical wavelengths; however, a small subset appears to occur in isolation, with little or no variability detected at l
Externí odkaz:
http://arxiv.org/abs/1505.01239
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