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Your search keyword '"Sokolovsky, K. V."' showing total 24 results
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24 results on '"Sokolovsky, K. V."'

1. RadioAstron discovery of a mini-cocoon around the restarted parsec-scale jet in 3C 84

Author

Savolainen, T., primary, Giovannini, G., additional, Kovalev, Y. Y., additional, Perucho, M., additional, Anderson, J. M., additional, Bruni, G., additional, Edwards, P. G., additional, Fuentes, A., additional, Giroletti, M., additional, Gómez, J. L., additional, Hada, K., additional, Lee, S.-S., additional, Lisakov, M. M., additional, Lobanov, A. P., additional, López-Miralles, J., additional, Orienti, M., additional, Petrov, L., additional, Plavin, A. V., additional, Sohn, B. W., additional, Sokolovsky, K. V., additional, Voitsik, P. A., additional, and Zensus, J. A., additional

Published
2023
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2. RadioAstron reveals a spine-sheath jet structure in 3C 273

Author

Bruni, G., primary, Gómez, J. L., additional, Vega-García, L., additional, Lobanov, A. P., additional, Fuentes, A., additional, Savolainen, T., additional, Kovalev, Y. Y., additional, Perucho, M., additional, Martí, J.-M., additional, Anderson, J. M., additional, Edwards, P. G., additional, Gurvits, L. I., additional, Lisakov, M. M., additional, Pushkarev, A. B., additional, Sokolovsky, K. V., additional, and Zensus, J. A., additional

Published
2021
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3. Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron

Author

Pötzl, F. M., primary, Lobanov, A. P., additional, Ros, E., additional, Gómez, J. L., additional, Bruni, G., additional, Bach, U., additional, Fuentes, A., additional, Gurvits, L. I., additional, Jauncey, D. L., additional, Kovalev, Y. Y., additional, Kravchenko, E. V., additional, Lisakov, M. M., additional, Savolainen, T., additional, Sokolovsky, K. V., additional, and Zensus, J. A., additional

Published
2021
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4. Localizing the γ-ray emitting region in the blazar TXS 2013+370

Author

Traianou, E., primary, Krichbaum, T. P., additional, Boccardi, B., additional, Angioni, R., additional, Rani, B., additional, Liu, J., additional, Ros, E., additional, Bach, U., additional, Sokolovsky, K. V., additional, Lisakov, M. M., additional, Kiehlmann, S., additional, Gurwell, M., additional, and Zensus, J. A., additional

Published
2020
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5. The Hubble Catalog of Variables (HCV) (Corrigendum)

Author

Bonanos, A. Z., primary, Yang, M., additional, Sokolovsky, K. V., additional, Gavras, P., additional, Hatzidimitriou, D., additional, Bellas-Velidis, I., additional, Kakaletris, G., additional, Lennon, D. J., additional, Nota, A., additional, White, R. L., additional, Whitmore, B. C., additional, Anastasiou, K. A., additional, Arévalo, M., additional, Arviset, C., additional, Baines, D., additional, Budavari, T., additional, Charmandaris, V., additional, Chatzichristodoulou, C., additional, Dimas, E., additional, Durán, J., additional, Georgantopoulos, I., additional, Karampelas, A., additional, Laskaris, N., additional, Lianou, S., additional, Livanis, A., additional, Lubow, S., additional, Manouras, G., additional, Moretti, M. I., additional, Paraskeva, E., additional, Pouliasis, E., additional, Rest, A., additional, Salgado, J., additional, Sonnentrucker, P., additional, Spetsieri, Z. T., additional, Taylor, P., additional, and Tsinganos, K., additional

Published
2019
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6. Analyzing polarization swings in 3C 279

Author

Kiehlmann S., Savolainen T., Jorstad S. G., Sokolovsky K. V., Schinzel F. K., Agudo I., Arkharov A. A., Benítez E., Berdyugin A., Blinov D. A., Bochkarev N. G., Borman G. A., Burenkov A. N., Casadio C., Doroshenko V. T., Efimova N. V., Fukazawa Y., Gómez J. L., Hagen-Thorn V. A., Heidt J., Hiriart D., Itoh R., Joshi M., Kimeridze G. N., Konstantinova T. S., Kopatskaya E. N., Korobtsev I. V., Kovalev Y. Y., Krajci T., Kurtanidze O., Kurtanidze S. O., Larionov V. M., Larionova E. G., Larionova L. V., Lindfors E., López E., Marscher A. P., McHardy I. M., Molina S. N., Morozova D. A., Nazarov S.V., Nikolashvili M. G., Nilsson K., Pulatova N. G., Reinthal R., Sadun A., Sergeev S. G., Sigua L. A., Sorcia M., Spiridonova O. I., Takalo L. O., Taylor B., Troitsky I. S., Ugolkova L. S., Zensus J. A., and Zhdanova V. E.

Subjects
Physics, QC1-999
Abstract

Quasar 3C 279 is known to exhibit episodes of optical polarization angle rotation. We present new, well-sampled optical polarization data for 3C 279 and introduce a method to distinguish between random and deterministic electric vector position angle (EVPA) variations. We observe EVPA rotations in both directions with different amplitudes and find that the EVPA variation shows characteristics of both random and deterministic cases. Our analysis indicates that the EVPA variation is likely dominated by a random process in the low brightness state of the jet and by a deterministic process in the flaring state.

Published
2013
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7. Discovery and follow-up of the unusual nuclear transient OGLE17aaj

Author

Gromadzki, M., primary, Hamanowicz, A., additional, Wyrzykowski, L., additional, Sokolovsky, K. V., additional, Fraser, M., additional, Kozłowski, Sz., additional, Guillochon, J., additional, Arcavi, I., additional, Trakhtenbrot, B., additional, Jonker, P. G., additional, Mattila, S., additional, Udalski, A., additional, Szymański, M. K., additional, Soszyński, I., additional, Poleski, R., additional, Pietrukowicz, P., additional, Skowron, J., additional, Mróz, P., additional, Ulaczyk, K., additional, Pawlak, M., additional, Rybicki, K. A., additional, Sollerman, J., additional, Taddia, F., additional, Kostrzewa-Rutkowska, Z., additional, Onori, F., additional, Young, D. R., additional, Maguire, K., additional, Smartt, S. J., additional, Inserra, C., additional, Gal-Yam, A., additional, Rau, A., additional, Chen, T.-W., additional, Angus, C. R., additional, and Buckley, D. A. H., additional

Published
2019
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8. Massive star population of the Virgo Cluster galaxy NGC4535

Author

Spetsieri, Z. T., primary, Bonanos, A. Z., additional, Kourniotis, M., additional, Yang, M., additional, Lianou, S., additional, Bellas-Velidis, I., additional, Gavras, P., additional, Hatzidimitriou, D., additional, Kopsacheili, M., additional, Moretti, M. I., additional, Nota, A., additional, Pouliasis, E., additional, and Sokolovsky, K. V., additional

Published
2018
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9. Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron

Author

Bruni, G., primary, Gómez, J. L., additional, Casadio, C., additional, Lobanov, A., additional, Kovalev, Y. Y., additional, Sokolovsky, K. V., additional, Lisakov, M. M., additional, Bach, U., additional, Marscher, A., additional, Jorstad, S., additional, Anderson, J. M., additional, Krichbaum, T. P., additional, Savolainen, T., additional, Vega-García, L., additional, Fuentes, A., additional, Zensus, J. A., additional, Alberdi, A., additional, Lee, S.-S., additional, Lu, R.-S., additional, Pérez-Torres, M., additional, and Ros, E., additional

Published
2017
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10. Multiband variability studies and novel broadband SED modeling of Mrk 501 in 2009

Author

Ahnen, M. L., primary, Ansoldi, S., additional, Antonelli, L. A., additional, Antoranz, P., additional, Babic, A., additional, Banerjee, B., additional, Bangale, P., additional, Barres de Almeida, U., additional, Barrio, J. A., additional, Becerra González, J., additional, Bednarek, W., additional, Bernardini, E., additional, Berti, A., additional, Biasuzzi, B., additional, Biland, A., additional, Blanch, O., additional, Bonnefoy, S., additional, Bonnoli, G., additional, Borracci, F., additional, Bretz, T., additional, Buson, S., additional, Carosi, A., additional, Chatterjee, A., additional, Clavero, R., additional, Colin, P., additional, Colombo, E., additional, Contreras, J. L., additional, Cortina, J., additional, Covino, S., additional, Da Vela, P., additional, Dazzi, F., additional, De Angelis, A., additional, De Lotto, B., additional, de Oña Wilhelmi, E., additional, Di Pierro, F., additional, Doert, M., additional, Domínguez, A., additional, Dominis Prester, D., additional, Dorner, D., additional, Doro, M., additional, Einecke, S., additional, Eisenacher Glawion, D., additional, Elsaesser, D., additional, Engelkemeier, M., additional, Fallah Ramazani, V., additional, Fernández-Barral, A., additional, Fidalgo, D., additional, Fonseca, M. V., additional, Font, L., additional, Frantzen, K., additional, Fruck, C., additional, Galindo, D., additional, García López, R. J., additional, Garczarczyk, M., additional, Garrido Terrats, D., additional, Gaug, M., additional, Giammaria, P., additional, Godinović, N., additional, González Muñoz, A., additional, Gora, D., additional, Guberman, D., additional, Hadasch, D., additional, Hahn, A., additional, Hanabata, Y., additional, Hayashida, M., additional, Herrera, J., additional, Hose, J., additional, Hrupec, D., additional, Hughes, G., additional, Idec, W., additional, Kodani, K., additional, Konno, Y., additional, Kubo, H., additional, Kushida, J., additional, La Barbera, A., additional, Lelas, D., additional, Lindfors, E., additional, Lombardi, S., additional, Longo, F., additional, López, M., additional, López-Coto, R., additional, Majumdar, P., additional, Makariev, M., additional, Mallot, K., additional, Maneva, G., additional, Manganaro, M., additional, Mannheim, K., additional, Maraschi, L., additional, Marcote, B., additional, Mariotti, M., additional, Martínez, M., additional, Mazin, D., additional, Menzel, U., additional, Miranda, J. M., additional, Mirzoyan, R., additional, Moralejo, A., additional, Moretti, E., additional, Nakajima, D., additional, Neustroev, V., additional, Niedzwiecki, A., additional, Nievas Rosillo, M., additional, Nilsson, K., additional, Nishijima, K., additional, Noda, K., additional, Nogués, L., additional, Overkemping, A., additional, Paiano, S., additional, Palacio, J., additional, Palatiello, M., additional, Paneque, D., additional, Paoletti, R., additional, Paredes, J. M., additional, Paredes-Fortuny, X., additional, Pedaletti, G., additional, Peresano, M., additional, Perri, L., additional, Persic, M., additional, Poutanen, J., additional, Prada Moroni, P. G., additional, Prandini, E., additional, Puljak, I., additional, Reichardt, I., additional, Rhode, W., additional, Ribó, M., additional, Rico, J., additional, Rodriguez Garcia, J., additional, Saito, T., additional, Satalecka, K., additional, Schröder, S., additional, Schultz, C., additional, Schweizer, T., additional, Shore, S. N., additional, Sillanpää, A., additional, Sitarek, J., additional, Snidaric, I., additional, Sobczynska, D., additional, Stamerra, A., additional, Steinbring, T., additional, Strzys, M., additional, Surić, T., additional, Takalo, L., additional, Tavecchio, F., additional, Temnikov, P., additional, Terzić, T., additional, Tescaro, D., additional, Teshima, M., additional, Thaele, J., additional, Torres, D. F., additional, Toyama, T., additional, Treves, A., additional, Vanzo, G., additional, Verguilov, V., additional, Vovk, I., additional, Ward, J. E., additional, Will, M., additional, Wu, M. H., additional, Zanin, R., additional, Abeysekara, A. U., additional, Archambault, S., additional, Archer, A., additional, Benbow, W., additional, Bird, R., additional, Buchovecky, M., additional, Buckley, J. H., additional, Bugaev, V., additional, Connolly, M. P., additional, Cui, W., additional, Dickinson, H. J., additional, Falcone, A., additional, Feng, Q., additional, Finley, J. P., additional, Fleischhack, H., additional, Flinders, A., additional, Fortson, L., additional, Gillanders, G. H., additional, Griffin, S., additional, Grube, J., additional, Hütten, M., additional, Hanna, D., additional, Holder, J., additional, Humensky, T. B., additional, Kaaret, P., additional, Kar, P., additional, Kelley-Hoskins, N., additional, Kertzman, M., additional, Kieda, D., additional, Krause, M., additional, Krennrich, F., additional, Lang, M. J., additional, Maier, G., additional, McCann, A., additional, Moriarty, P., additional, Mukherjee, R., additional, Nieto, D., additional, O’Brien, S., additional, Ong, R. A., additional, Otte, N., additional, Park, N., additional, Perkins, J., additional, Pichel, A., additional, Pohl, M., additional, Popkow, A., additional, Pueschel, E., additional, Quinn, J., additional, Ragan, K., additional, Reynolds, P. T., additional, Richards, G. T., additional, Roache, E., additional, Rovero, A. C., additional, Rulten, C., additional, Sadeh, I., additional, Santander, M., additional, Sembroski, G. H., additional, Shahinyan, K., additional, Telezhinsky, I., additional, Tucci, J. V., additional, Tyler, J., additional, Wakely, S. P., additional, Weinstein, A., additional, Wilcox, P., additional, Wilhelm, A., additional, Williams, D. A., additional, Zitzer, B., additional, Razzaque, S., additional, Villata, M., additional, Raiteri, C. M., additional, Aller, H. D., additional, Aller, M. F., additional, Larionov, V. M., additional, Arkharov, A. A., additional, Blinov, D. A., additional, Efimova, N. V., additional, Grishina, T. S., additional, Hagen-Thorn, V. A., additional, Kopatskaya, E. N., additional, Larionova, L. V., additional, Larionova, E. G., additional, Morozova, D. A., additional, Troitsky, I. S., additional, Ligustri, R., additional, Calcidese, P., additional, Berdyugin, A., additional, Kurtanidze, O. M., additional, Nikolashvili, M. G., additional, Kimeridze, G. N., additional, Sigua, L. A., additional, Kurtanidze, S. O., additional, Chigladze, R. A., additional, Chen, W. P., additional, Koptelova, E., additional, Sakamoto, T., additional, Sadun, A. C., additional, Moody, J. W., additional, Pace, C., additional, Pearson, R., additional, Yatsu, Y., additional, Mori, Y., additional, Carraminyana, A., additional, Carrasco, L., additional, de la Fuente, E., additional, Norris, J. P., additional, Smith, P. S., additional, Wehrle, A., additional, Gurwell, M. A., additional, Zook, A., additional, Pagani, C., additional, Perri, M., additional, Capalbi, M., additional, Cesarini, A., additional, Krimm, H. A., additional, Kovalev, Y. Y., additional, Kovalev, Yu. A., additional, Ros, E., additional, Pushkarev, A. B., additional, Lister, M. L., additional, Sokolovsky, K. V., additional, Kadler, M., additional, Piner, G., additional, Lähteenmäki, A., additional, Tornikoski, M., additional, Angelakis, E., additional, Krichbaum, T. P., additional, Nestoras, I., additional, Fuhrmann, L., additional, Zensus, J. A., additional, Cassaro, P., additional, Orlati, A., additional, Maccaferri, G., additional, Leto, P., additional, Giroletti, M., additional, Richards, J. L., additional, Max-Moerbeck, W., additional, and Readhead, A. C. S., additional

Published
2017
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11. Polarization angle swings in blazars: The case of 3C 279(Corrigendum)

Author

Kiehlmann, S., primary, Savolainen, T., additional, Jorstad, S. G., additional, Sokolovsky, K. V., additional, Schinzel, F. K., additional, Marscher, A. P., additional, Larionov, V. M., additional, Agudo, I., additional, Akitaya, H., additional, Benítez, E., additional, Berdyugin, A., additional, Blinov, D. A., additional, Bochkarev, N. G., additional, Borman, G. A., additional, Burenkov, A. N., additional, Casadio, C., additional, Doroshenko, V. T., additional, Efimova, N. V., additional, Fukazawa, Y., additional, Gómez, J. L., additional, Grishina, T. S., additional, Hagen-Thorn, V. A., additional, Heidt, J., additional, Hiriart, D., additional, Itoh, R., additional, Joshi, M., additional, Kawabata, K. S., additional, Kimeridze, G. N., additional, Kopatskaya, E. N., additional, Korobtsev, I. V., additional, Krajci, T., additional, Kurtanidze, O. M., additional, Kurtanidze, S. O., additional, Larionova, E. G., additional, Larionova, L. V., additional, Lindfors, E., additional, López, J. M., additional, McHardy, I. M., additional, Molina, S. N., additional, Moritani, Y., additional, Morozova, D. A., additional, Nazarov, S. V., additional, Nikolashvili, M. G., additional, Nilsson, K., additional, Pulatova, N. G., additional, Reinthal, R., additional, Sadun, A., additional, Sasada, M., additional, Savchenko, S. S., additional, Sergeev, S. G., additional, Sigua, L. A., additional, Smith, P. S., additional, Sorcia, M., additional, Spiridonova, O. I., additional, Takaki, K., additional, Takalo, L. O., additional, Taylor, B., additional, Troitsky, I. S., additional, Uemura, M., additional, Ugolkova, L. S., additional, Ui, T., additional, Yoshida, M., additional, Zensus, J. A., additional, and Zhdanova, V. E., additional

Published
2016
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13. Very Long Baseline polarimetry and theγ-ray connection in Markarian 421 during the broadband campaign in 2011

Author

Lico, R., primary, Giroletti, M., additional, Orienti, M., additional, Gómez, J. L., additional, Casadio, C., additional, D’Ammando, F., additional, Blasi, M. G., additional, Cotton, W., additional, Edwards, P. G., additional, Fuhrmann, L., additional, Jorstad, S., additional, Kino, M., additional, Kovalev, Y. Y., additional, Krichbaum, T. P., additional, Marscher, A. P., additional, Paneque, D., additional, Piner, B. G., additional, and Sokolovsky, K. V., additional

Published
2014
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14. Two active states of the narrow-line gamma-ray-loud AGN GB 1310+487

Author

Sokolovsky, K. V., primary, Schinzel, F. K., additional, Tanaka, Y. T., additional, Abolmasov, P. K., additional, Angelakis, E., additional, Bulgarelli, A., additional, Carrasco, L., additional, Cenko, S. B., additional, Cheung, C. C., additional, Clubb, K. I., additional, D’Ammando, F., additional, Escande, L., additional, Fegan, S. J., additional, Filippenko, A. V., additional, Finke, J. D., additional, Fuhrmann, L., additional, Fukazawa, Y., additional, Hays, E., additional, Healey, S. E., additional, Ikejiri, Y., additional, Itoh, R., additional, Kawabata, K. S., additional, Komatsu, T., additional, Kovalev, Yu. A., additional, Kovalev, Y. Y., additional, Krichbaum, T. P., additional, Larsson, S., additional, Lister, M. L., additional, Lott, B., additional, Max-Moerbeck, W., additional, Nestoras, I., additional, Pittori, C., additional, Pursimo, T., additional, Pushkarev, A. B., additional, Readhead, A. C. S., additional, Recillas, E., additional, Richards, J. L., additional, Riquelme, D., additional, Romani, R. W., additional, Sakimoto, K., additional, Sasada, M., additional, Schmidt, R., additional, Shaw, M. S., additional, Sievers, A., additional, Thompson, D. J., additional, Uemura, M., additional, Ungerechts, H., additional, Vercellone, S., additional, Verrecchia, F., additional, Yamanaka, M., additional, Yoshida, M., additional, and Zensus, J. A., additional

Published
2014
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15. The TeV blazar Markarian 421 at the highest spatial resolution

Author

Blasi, M. G., primary, Lico, R., additional, Giroletti, M., additional, Orienti, M., additional, Giovannini, G., additional, Cotton, W., additional, Edwards, P. G., additional, Fuhrmann, L., additional, Krichbaum, T. P., additional, Kovalev, Y. Y., additional, Jorstad, S., additional, Marscher, A., additional, Kino, M., additional, Paneque, D., additional, Perez-Torres, M. A., additional, Piner, B. G., additional, and Sokolovsky, K. V., additional

Published
2013
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16. The simultaneous low state spectral energy distribution of 1ES 2344+514 from radio to very high energies

Author

Aleksić, J., primary, Antonelli, L. A., additional, Antoranz, P., additional, Asensio, M., additional, Backes, M., additional, Barres de Almeida, U., additional, Barrio, J. A., additional, Bednarek, W., additional, Berger, K., additional, Bernardini, E., additional, Biland, A., additional, Blanch, O., additional, Bock, R. K., additional, Boller, A., additional, Bonnefoy, S., additional, Bonnoli, G., additional, Borla Tridon, D., additional, Bretz, T., additional, Carmona, E., additional, Carosi, A., additional, Carreto Fidalgo, D., additional, Colin, P., additional, Colombo, E., additional, Contreras, J. L., additional, Cortina, J., additional, Cossio, L., additional, Covino, S., additional, Da Vela, P., additional, Dazzi, F., additional, De Angelis, A., additional, De Caneva, G., additional, De Lotto, B., additional, Delgado Mendez, C., additional, Doert, M., additional, Domínguez, A., additional, Dominis Prester, D., additional, Dorner, D., additional, Doro, M., additional, Eisenacher, D., additional, Elsaesser, D., additional, Ferenc, D., additional, Fonseca, M. V., additional, Font, L., additional, Fruck, C., additional, García López, R. J., additional, Garczarczyk, M., additional, Garrido Terrats, D., additional, Gaug, M., additional, Giavitto, G., additional, Godinović, N., additional, González Muñoz, A., additional, Gozzini, S. R., additional, Hadamek, A., additional, Hadasch, D., additional, Herrero, A., additional, Hose, J., additional, Hrupec, D., additional, Jankowski, F., additional, Kadenius, V., additional, Klepser, S., additional, Knoetig, M. L., additional, Krähenbühl, T., additional, Krause, J., additional, Kushida, J., additional, La Barbera, A., additional, Lelas, D., additional, Leonardo, E., additional, Lewandowska, N., additional, Lindfors, E., additional, Lombardi, S., additional, López, M., additional, López-Coto, R., additional, López-Oramas, A., additional, Lorenz, E., additional, Lozano, I., additional, Makariev, M., additional, Mallot, K., additional, Maneva, G., additional, Mankuzhiyil, N., additional, Mannheim, K., additional, Maraschi, L., additional, Marcote, B., additional, Mariotti, M., additional, Martínez, M., additional, Masbou, J., additional, Mazin, D., additional, Meucci, M., additional, Miranda, J. M., additional, Mirzoyan, R., additional, Moldón, J., additional, Moralejo, A., additional, Munar-Adrover, P., additional, Nakajima, D., additional, Niedzwiecki, A., additional, Nieto, D., additional, Nilsson, K., additional, Nowak, N., additional, Orito, R., additional, Paiano, S., additional, Palatiello, M., additional, Paneque, D., additional, Paoletti, R., additional, Paredes, J. M., additional, Partini, S., additional, Persic, M., additional, Pilia, M., additional, Prada, F., additional, Prada Moroni, P. G., additional, Prandini, E., additional, Puljak, I., additional, Reichardt, I., additional, Reinthal, R., additional, Rhode, W., additional, Ribó, M., additional, Rico, J., additional, Rügamer, S., additional, Saggion, A., additional, Saito, K., additional, Saito, T. Y., additional, Salvati, M., additional, Satalecka, K., additional, Scalzotto, V., additional, Scapin, V., additional, Schultz, C., additional, Schweizer, T., additional, Shore, S. N., additional, Sillanpää, A., additional, Sitarek, J., additional, Snidaric, I., additional, Sobczynska, D., additional, Spanier, F., additional, Spiro, S., additional, Stamatescu, V., additional, Stamerra, A., additional, Steinke, B., additional, Storz, J., additional, Sun, S., additional, Surić, T., additional, Takalo, L., additional, Takami, H., additional, Tavecchio, F., additional, Temnikov, P., additional, Terzić, T., additional, Tescaro, D., additional, Teshima, M., additional, Tibolla, O., additional, Torres, D. F., additional, Toyama, T., additional, Treves, A., additional, Uellenbeck, M., additional, Vogler, P., additional, Wagner, R. M., additional, Weitzel, Q., additional, Zandanel, F., additional, Zanin, R., additional, Longo, F., additional, Lucarelli, F., additional, Pittori, C., additional, Vercellone, S., additional, Bastieri, D., additional, Sbarra, C., additional, Angelakis, E., additional, Fuhrmann, L., additional, Nestoras, I., additional, Krichbaum, T. P., additional, Sievers, A., additional, Zensus, J. A., additional, Antonyuk, K. A., additional, Baumgartner, W., additional, Berduygin, A., additional, Carini, M., additional, Cook, K., additional, Gehrels, N., additional, Kadler, M., additional, Kovalev, Yu. A., additional, Kovalev, Y. Y., additional, Krauss, F., additional, Krimm, H. A., additional, Lähteenmäki, A., additional, Lister, M. L., additional, Max-Moerbeck, W., additional, Pasanen, M., additional, Pushkarev, A. B., additional, Readhead, A. C. S., additional, Richards, J. L., additional, Sainio, J., additional, Shakhovskoy, D. N., additional, Sokolovsky, K. V., additional, Tornikoski, M., additional, Tueller, J., additional, Weidinger, M., additional, and Wilms, J., additional

Published
2013
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17. VLBA monitoring of Mrk 421 at 15 GHz and 24 GHz during 2011

Author

Lico, R., primary, Giroletti, M., additional, Orienti, M., additional, Giovannini, G., additional, Cotton, W., additional, Edwards, P. G., additional, Fuhrmann, L., additional, Krichbaum, T. P., additional, Sokolovsky, K. V., additional, Kovalev, Y. Y., additional, Jorstad, S., additional, Marscher, A., additional, Kino, M., additional, Paneque, D., additional, Perez-Torres, M. A., additional, and Piner, G., additional

Published
2012
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18. Very Long Baseline Polarimetric monitoring at 15 GHz of the TeV blazar Markarian 421.

Author

Lico, R., Casadio, C., Gómez, J. L., Giroletti, M., Orienti, M., Giovannini, G., Blasi, M. G., Cotton, W., Edwards, P. G., Fuhrmann, L., Jorstad, S., Kino, M., Kovalev, Y. Y., Krichbaum, T. P., Marscher, A., Paneque, D., Perez-Torres, M. A., Piner, G., and Sokolovsky, K. V.

Subjects
ACTIVE galactic nuclei, FLUX (Energy), OPTICAL polarization, GAMMA rays
Abstract

Thanks to high resolution radio observations it is possible to obtain a direct imaging of the innermost regions of Active Galactic Nuclei; in particular, it is possible to investigate about the jet's morphology and any proper motions, and the time evolution of physical parameters, such as flux densities and spectral index. Furthermore, with the study of the polarization properties, it is possible to obtain important information about the magnetic field structure and the emission mechanisms. In this work we present recent results about the nearby (z=0.031) TeV blazar Mrk 421. We analyzed data obtained with the Very Long Baseline Array (VLBA), both in total and polarized intensity, at twelve epochs (one observation per month from January to December 2011) at 15, 24 and 43 GHz, in the context of a broadband campaign from the radio to gamma-ray. We investigate the inner jet structure on parsec scale through the study of model-fit components for each epoch. At these frequencies the source shows a compact (about 0.13 mas, or 0.08 pc) and bright component, with a one sided jet detected out to about 10 mas. All model-fit components in the jet appear to be almost stationary during our observation period, and the spectral index is fairly flat in the core region and steepens along the jet's length. In particular, we present a preliminary study of the polarization properties for the 15 GHz dataset: we found a degree of polarization of ~ 1 % for the core region and for the C3 component, at near 1 mas from the core, we found a value of near 14%. [ABSTRACT FROM AUTHOR]

Published
2013
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20. Identification ofγ-ray emission from 3C 345 and NRAO 512

Author

Schinzel, F. K., primary, Sokolovsky, K. V., additional, D’Ammando, F., additional, Burnett, T. H., additional, Max-Moerbeck, W., additional, Cheung, C. C., additional, Fegan, S. J., additional, Casandjian, J. M., additional, Reyes, L. C., additional, Villata, M., additional, Raiteri, C. M., additional, Agudo, I., additional, Bravo Calle, O. J. A., additional, Carosati, D., additional, Casas, R., additional, Gómez, J. L., additional, Gurwell, M. A., additional, Hsiao, H. Y., additional, Jorstad, S. G., additional, Kimeridze, G., additional, Konstantinova, T. S., additional, Kopatskaya, E. N., additional, Koptelova, E., additional, Kurtanidze, O. M., additional, Kurtanidze, S. O., additional, Larionov, V. M., additional, Larionova, E. G., additional, Larionova, L. V., additional, Marscher, A. P., additional, Morozova, D. A., additional, Nikolashvili, M. G., additional, Roca-Sogorb, M., additional, Ros, J. A., additional, Sigua, L. A., additional, Spiridonova, O., additional, Troitsky, I. S., additional, Vlasyuk, V. V., additional, Lobanov, A. P., additional, and Zensus, J. A., additional

Published
2011
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23. Very Long Baseline polarimetry and the γ-ray connection in Markarian 421 during the broadband campaign in 2011.

Author

Giroletti, M., Lico, R., Orienti, M., D'Ammando, F., Blasi, M. G., Kino, M., Sokolovsky, K. V., Kovalev, Y. Y., Paneque, D., Piner, B. G., Gómez, J. L., Casadio, C., Cotton, W., Edwards, P. G., Fuhrmann, L., Krichbaum, T. P., Marscher, A. P., and Jorstad, S.

Subjects
LIGHT curves, TOPOLOGY, ACTIVE galaxies, ASTROPHYSICS, ASTRONOMY
Abstract

Conte×t. This is the third paper in a series devoted to the analysis of the multiwavelength data from a campaign on the nearby (z = 0.03) TeV blazar Mrk 421 during 2011. Aims. We investigate the structure of the high angular resolution polarization, the magnetic topology, the total intensity light curve, the γ-ray flu×, and the photon inde×. We describe how they evolve and how they are connected. Methods. We analyzed data in polarized intensity obtained with the Very Long Baseline Array (VLBA) at twelve epochs (one observation per month from January to December 2011) at 15, 24, and 43 GHz. For the absolute orientation of the electric vector position angles (EVPA) we used the D-terms method; we also confirm its accuracy. We also used γ-ray data from the Fermi Large Area Telescope on weekly time bins throughout 2011. Results. The source shows polarized emission, and its properties vary with time, frequency, and location along the jet. The core mean polarization fraction is generally between 1% and 2%, with a 4% peak at 43 GHz in March; the polarization angle is variable, mainly at 15 GHz, where it changes frequently, and less so at 43 GHz, where it oscillates in the range 114°-173°∘. The jet polarization properties are more stable, with a fractional polarization of around 16% and a polarization angle nearly perpendicular to the jet a×is. The average flu× and photon inde× at γ-ray energies are (17.4 ± 0.5) ×10-8 ph cm-2 s-1 and Γ = 1.77 ± 0.02. The γ-ray light curve shows variability, with a main peak of (38 ± 11) × 10-8 ph cm-2 s-1 at the beginning of March and two later peaks centered on September 8 and November 13. The first γ-ray peak appears to be associated with the peak in the core polarized emission at 43 GHz, as well as with the total intensity light curve. A discrete correlation function analysis yields a correlation coefficient of 0.54 at zero delay, with a significance level >99.7%. Conclusions. With this multifrequency study, we accurately determine the polarization properties of Mrk 421, both in the core and in the jet region. The radio and γ-ray light curves are correlated. The observed EVPA variability at 15 GHz is partly due to opacity and partly to a variable Faraday rotation effect. To e×plain the residual variability of the intrinsic polarization angle and the low degree of polarization in the core region, we invoke a blend of variable cross-polarized subcomponents with different polarization properties within the beam. [ABSTRACT FROM AUTHOR]

Published
2014
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24. Very Long Baseline polarimetry and theγ-ray connection in Markarian 421 during the broadband campaign in 2011

Author

B. G. Piner, Lars Fuhrmann, David Paneque, W. D. Cotton, Alan P. Marscher, M. G. Blasi, Rocco Lico, Yuri Y. Kovalev, Philip G. Edwards, J. L. Gomez, Carolina Casadio, M. Orienti, Motoki Kino, Marcello Giroletti, Thomas P. Krichbaum, Filippo D'Ammando, Kirill Sokolovsky, S. G. Jorstad, Lico, R., Giroletti, M., Orienti, M., Gómez, J. L., Casadio, C., D’Ammando, F., Blasi, M. G., Cotton, W., Edwards, P. G., Fuhrmann, L., Jorstad, S., Kino, M., Kovalev, Y. Y., Krichbaum, T. P., Marscher, A. P., Paneque, D., Piner, B. G., and Sokolovsky, K. V.

Subjects
Opacity, Astrophysics::High Energy Astrophysical Phenomena, Polarimetry, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 7. Clean energy, symbols.namesake, Broadband, Faraday effect, Baseline (configuration management), Blazar, Very Long Baseline Array, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Brewster's angle, Gamma ray, Astronomy and Astrophysics, BL Lacertae objects: individual: Mrk 421, galaxies: active, galaxies: jets, galaxies: magnetic fields, techniques: interferometric, Light curve, Polarization (waves), Connection (mathematics), 13. Climate action, Space and Planetary Science, symbols, Degree of polarization, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We analyzed data in polarized intensity obtained with the Very Long Baseline Array (VLBA) at twelve epochs (one observation per month from January to December 2011) at 15, 24, and 43 GHz. For the absolute orientation of the electric vector position angles (EVPA) we used the D-terms method. We also used gamma-ray data from the Fermi Large Area Telescope on weekly time bins throughout 2011. The source shows polarized emission, and its properties vary with time, frequency, and location along the jet. The core mean polarization fraction is generally between 1% and 2%, with a 4% peak at 43 GHz in March; the polarization angle is variable, mainly at 15 GHz, where it changes frequently, and less so at 43 GHz, where it oscillates in the range 114 - 173 deg. The jet polarization properties are more stable, with a fractional polarization of around 16% and a polarization angle nearly perpendicular to the jet axis. The average flux and photon index at gamma-ray energies are (17.7+-0.5)x10^8 ph cm^-2 s^-1 and the photon index is 1.77+-0.02. The gamma-ray light curve shows variability, with a main peak that appears to be associated with the peak in the core polarized emission at 43 GHz, as well as with the total intensity light curve. A discrete correlation function analysis yields a correlation coefficient of 0.54 at zero delay, with a significance level above 99.7%. We accurately determine the polarization properties of Mrk 421, both in the core and in the jet region. The radio and gamma-ray light curves are correlated. The observed EVPA variability at 15 GHz is partly due to opacity and partly to a variable Faraday rotation effect. To explain the residual variability of the intrinsic polarization angle and the low degree of polarization in the core region, we invoke a blend of variable cross-polarized subcomponents with different polarization properties within the beam., 13 pages

Published
2014

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