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2. Corrigendum: Properties of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies (Astronomy and Astrophysics (2015) 575 (A13) DOI: 10.1051/0004-6361/201424972)

Author

Foschini, L., Berton, M., Caccianiga, A., Ciroi, S., Cracco, V., Peterson, B. M., Angelakis, E., Braito, V., Fuhrmann, L., Gallo, L., Grupe, D., Järvelä, E., Kaufmann, S., Komossa, S., Kovalev, Y. Y., Lähteenmäki, A., Lisakov, M. M., Lister, M. L., Mathur, S., Richards, J. L., Romano, P., Sievers, A., Tagliaferri, G., Tammi, J., Tibolla, O., Tornikoski, M., Vercellone, S., La Mura, G., Maraschi, L., and Rafanelli, P.

Published
2017

3. Radio-emitting narrow-line Seyfert 1 galaxies in the JVLA perspective

Author

Berton, M., primary, Congiu, E., additional, Järvelä, E., additional, Antonucci, R., additional, Kharb, P., additional, Lister, M. L., additional, Tarchi, A., additional, Caccianiga, A., additional, Chen, S., additional, Foschini, L., additional, Lähteenmäki, A., additional, Richards, J. L., additional, Ciroi, S., additional, Cracco, V., additional, Frezzato, M., additional, La Mura, G., additional, and Rafanelli, P., additional

Published
2018
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4. VLBA polarimetric monitoring of 3C 111

Author

Beuchert, T., primary, Kadler, M., additional, Perucho, M., additional, Großberger, C., additional, Schulz, R., additional, Agudo, I., additional, Casadio, C., additional, Gómez, J. L., additional, Gurwell, M., additional, Homan, D., additional, Kovalev, Y. Y., additional, Lister, M. L., additional, Markoff, S., additional, Molina, S. N., additional, Pushkarev, A. B., additional, Ros, E., additional, Savolainen, T., additional, Steinbring, T., additional, Thum, C., additional, and Wilms, J., additional

Published
2018
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5. Radio and gamma-ray properties of extragalactic jets from the TANAMI sample

Author

Böck, M., Kadler, M., Müller, C., Tosti, G., Bastieri, D., Burnett, T., Carpenter, B., Cavazzuti, E., Dutka, M., Blanchard, J., Edwards, P. G., Hase, H., Horiuchi, S., Jauncey, D. L., Krauß, F., Lister, M. L., Lovell, J. E. J., Lott, B., Murphy, D. W., Phillips, C., Plötz, C., Pursimo, T., Quick, J., Ros, E., Taylor, G., Thompson, D. J., Tingay, S. J., Tzioumis, A., and Zensus, J. A.

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The TANAMI program has been observing parsec-scale radio jets of southern (declination south of − 30°) γ-ray bright AGN, simultaneously with Fermi/LAT monitoring of their γ-ray emission, via high-resolution radio imaging with Very Long Baseline Interferometry techniques. We present the radio and γ-rayproperties of the TANAMI sources based on one year of contemporaneous TANAMI and Fermi/LAT data. A large fraction (72%) of the TANAMI sample can be associated with bright γ-ray sources for this time range. Association rates differ for different optical classes with all BL Lacs, 76% of quasars, and just 17% of galaxies detected by the LAT. Upper limits were established on the γ-ray flux from TANAMI sources not detected by LAT. This analysis led to the identification of three new Fermi sources whose detection was later confirmed. The γ-ray and radio luminosities are related by Lγ ∝ Lᵣ⁰·⁸⁹±⁰·⁰⁴. The brightness temperatures of the radio cores increase with the average γ-ray luminosity and the presence of brightness temperatures above the inverse Compton limit implies strong Doppler boosting in those sources. The undetected sources have lower γ/radio luminosity ratios and lower contemporaneous brightness temperatures. Unless the Fermi/LAT-undetected blazars are much γ-ray-fainter than the Fermi/LAT-detected sources, their γ-ray luminosity should not be significantly lower than the upper limits calculated here.

Published
2016
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6. Properties of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies (Corrigendum)

Author

Foschini, L., primary, Berton, M., additional, Caccianiga, A., additional, Ciroi, S., additional, Cracco, V., additional, Peterson, B. M., additional, Angelakis, E., additional, Braito, V., additional, Fuhrmann, L., additional, Gallo, L., additional, Grupe, D., additional, Järvelä, E., additional, Kaufmann, S., additional, Komossa, S., additional, Kovalev, Y. Y., additional, Lähteenmäki, A., additional, Lisakov, M. M., additional, Lister, M. L., additional, Mathur, S., additional, Richards, J. L., additional, Romano, P., additional, Sievers, A., additional, Tagliaferri, G., additional, Tammi, J., additional, Tibolla, O., additional, Tornikoski, M., additional, Vercellone, S., additional, La Mura, G., additional, Maraschi, L., additional, and Rafanelli, P., additional

Published
2017
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7. Kiloparsec-scale emission in the narrow-line Seyfert 1 galaxy Mrk 783

Author

Congiu, E., primary, Berton, M., additional, Giroletti, M., additional, Antonucci, R., additional, Caccianiga, A., additional, Kharb, P., additional, Lister, M. L., additional, Foschini, L., additional, Ciroi, S., additional, Cracco, V., additional, Frezzato, M., additional, Järvelä, E., additional, La Mura, G., additional, Richards, J. L., additional, and Rafanelli, P., additional

Published
2017
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8. 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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9. Insights into the emission of the blazar 1ES 1011+496 through unprecedented broadband observations during 2011 and 2012

Author

Aleksić, J., primary, Ansoldi, S., additional, Antonelli, L. A., additional, Antoranz, P., additional, Arcaro, C., additional, Babic, A., additional, Bangale, P., additional, Barres de Almeida, U., additional, Barrio, J. A., additional, Becerra González, J., additional, Bednarek, W., additional, Bernardini, E., additional, Biasuzzi, B., additional, Biland, A., additional, Blanch, O., additional, Bonnefoy, S., additional, Bonnoli, G., additional, Borracci, F., additional, Bretz, T., additional, Carmona, E., additional, Carosi, A., 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 Caneva, G., additional, De Lotto, B., additional, de Oña Wilhelmi, E., additional, Delgado Mendez, C., additional, Di Pierro, F., additional, Dominis Prester, D., additional, Dorner, D., additional, Doro, M., additional, Einecke, S., additional, Eisenacher, D., additional, Elsaesser, D., 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, Godinović, N., additional, González Muñoz, A., additional, Gozzini, S. R., additional, Hadasch, D., additional, Hanabata, Y., additional, Hayashida, M., additional, Herrera, J., additional, Hose, J., additional, Hrupec, D., additional, Idec, W., additional, Kadenius, V., additional, Kellermann, H., additional, Knoetig, M. L., additional, Kodani, K., additional, Konno, Y., additional, Krause, J., additional, Kubo, H., additional, Kushida, J., additional, La Barbera, A., additional, Lelas, D., additional, Lewandowska, N., additional, Lindfors, E., additional, Lombardi, S., additional, Longo, F., 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, 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, Munar-Adrover, P., additional, Nakajima, D., additional, Neustroev, V., additional, Niedzwiecki, A., additional, Nievas Rosillo, M., additional, Nilsson, K., additional, Nishijima, K., additional, Noda, K., additional, Orito, R., additional, Overkemping, A., additional, Paiano, S., additional, Palatiello, M., additional, Paneque, D., additional, Paoletti, R., additional, Paredes, J. M., additional, Paredes-Fortuny, X., additional, Persic, M., additional, Poutanen, J., additional, Prada Moroni, P. G., additional, Prandini, E., additional, Puljak, I., additional, Reinthal, R., additional, Rhode, W., additional, Ribó, M., additional, Rico, J., additional, Rodriguez Garcia, J., additional, Saito, T., additional, Saito, K., additional, Satalecka, K., additional, Scalzotto, V., additional, Scapin, V., 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, Takalo, L., additional, Takami, H., 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, Vogler, P., additional, Will, M., additional, Zanin, R., additional, Buson, S., additional, D’Ammando, F., additional, Lähteenmäki, A., additional, Hovatta, T., additional, Kovalev, Y. Y., additional, Lister, M. L., additional, Max-Moerbeck, W., additional, Mundell, C., additional, Pushkarev, A. B., additional, Rastorgueva-Foi, E., additional, Readhead, A. C. S., additional, Richards, J. L., additional, Tammi, J., additional, Sanchez, D. A., additional, Tornikoski, M., additional, Savolainen, T., additional, and Steele, I., additional

Published
2016
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10. Radio and gamma-ray properties of extragalactic jets from the TANAMI sample

Author

Böck, M., primary, Kadler, M., additional, Müller, C., additional, Tosti, G., additional, Ojha, R., additional, Wilms, J., additional, Bastieri, D., additional, Burnett, T., additional, Carpenter, B., additional, Cavazzuti, E., additional, Dutka, M., additional, Blanchard, J., additional, Edwards, P. G., additional, Hase, H., additional, Horiuchi, S., additional, Jauncey, D. L., additional, Krauß, F., additional, Lister, M. L., additional, Lovell, J. E. J., additional, Lott, B., additional, Murphy, D. W., additional, Phillips, C., additional, Plötz, C., additional, Pursimo, T., additional, Quick, J., additional, Ros, E., additional, Taylor, G., additional, Thompson, D. J., additional, Tingay, S. J., additional, Tzioumis, A., additional, and Zensus, J. A., additional

Published
2016
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12. Properties of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies

Author

Foschini, L., primary, Berton, M., additional, Caccianiga, A., additional, Ciroi, S., additional, Cracco, V., additional, Peterson, B. M., additional, Angelakis, E., additional, Braito, V., additional, Fuhrmann, L., additional, Gallo, L., additional, Grupe, D., additional, Järvelä, E., additional, Kaufmann, S., additional, Komossa, S., additional, Kovalev, Y. Y., additional, Lähteenmäki, A., additional, Lisakov, M. M., additional, Lister, M. L., additional, Mathur, S., additional, Richards, J. L., additional, Romano, P., additional, Sievers, A., additional, Tagliaferri, G., additional, Tammi, J., additional, Tibolla, O., additional, Tornikoski, M., additional, Vercellone, S., additional, La Mura, G., additional, Maraschi, L., additional, and Rafanelli, P., additional

Published
2015
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13. Relativistic phenomena in active galactic nuclei

Author

Cohen, M. H., Lister, M. L., Vermeulen, R. C., Gurvits, Leonid I., Frey, Sándor, and Rawlings, Steve

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The idea that the radio jets in AGN contain material in relativistic motion is supported by many lines of observational evidence, including morphology, brightness temperature estimated with interferometers and with intrinsic variations, interstellar scintillations, X-rays, and superluminal motion. These are largely independent, and taken together make an irrefutable case for relativistic motion.

Published
2005

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 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. Catching the radio flare in CTA 102

Author

Fromm, C. M., primary, Ros, E., additional, Perucho, M., additional, Savolainen, T., additional, Mimica, P., additional, Kadler, M., additional, Lobanov, A. P., additional, Lister, M. L., additional, Kovalev, Y. Y., additional, and Zensus, J. A., additional

Published
2013
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18. Relativistic phenomena in active galactic nuclei

Author

Gurvits, Leonid I., Frey, Sándor, Rawlings, Steve, Cohen, M. H., Lister, M. L., Vermeulen, R. C., Gurvits, Leonid I., Frey, Sándor, Rawlings, Steve, Cohen, M. H., Lister, M. L., and Vermeulen, R. C.

Abstract

The idea that the radio jets in AGN contain material in relativistic motion is supported by many lines of observational evidence, including morphology, brightness temperature estimated with interferometers and with intrinsic variations, interstellar scintillations, X-rays, and superluminal motion. These are largely independent, and taken together make an irrefutable case for relativistic motion.

Published
2005

19. Radio-to-γ-ray monitoring of the narrow-line Seyfert 1 galaxy PMN J0948 + 0022 from 2008 to 2011

Author

Foschini, L., primary, Angelakis, E., additional, Fuhrmann, L., additional, Ghisellini, G., additional, Hovatta, T., additional, Lahteenmaki, A., additional, Lister, M. L., additional, Braito, V., additional, Gallo, L., additional, Hamilton, T. S., additional, Kino, M., additional, Komossa, S., additional, Pushkarev, A. B., additional, Thompson, D. J., additional, Tibolla, O., additional, Tramacere, A., additional, Carramiñana, A., additional, Carrasco, L., additional, Falcone, A., additional, Giroletti, M., additional, Grupe, D., additional, Kovalev, Y. Y., additional, Krichbaum, T. P., additional, Max-Moerbeck, W., additional, Nestoras, I., additional, Pearson, T. J., additional, Porras, A., additional, Readhead, A. C. S., additional, Recillas, E., additional, Richards, J. L., additional, Riquelme, D., additional, Sievers, A., additional, Tammi, J., additional, Tornikoski, M., additional, Ungerechts, H., additional, Zensus, J. A., additional, Celotti, A., additional, Bonnoli, G., additional, Doi, A., additional, Maraschi, L., additional, Tagliaferri, G., additional, and Tavecchio, F., additional

Published
2012
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26. Catching the radio flare in CTA102 II. VLBI kinematic analysis.

Author

Fromm, C. M., Ros, E., Perucho, M., Savolainen, T., Mimica, P., Kadler, M., Lobanov, A. P., Lister, M. L., Kovalev, Y. Y., and Zensus, J. A.

Subjects
KINEMATICS, ACTIVE galaxies, QUASARS, RADIATION, GALACTIC nuclei
Abstract

Context. Very Long Baseline Interferometry (VLBI) observations can resolve the radio structure of active galactic nuclei (AGN) and provide estimates of the structural and kinematic characteristics on parsec-scales in their jets. The changes in the kinematics of the observed jet features can be used to study the physical conditions in the innermost regions of these sources. We performed multifrequency multiepoch Very Long Baseline Array (VLBA) observations of the blazar CTA102 during its 2006 radio flare, the strongest ever reported for this source. These observations provide an excellent opportunity to investigate the evolution of the physical properties of blazars, especially during these flaring events Aims. We want to study the kinematic changes in the source during the strong radio outburst in April 2006 and test the assumption of a shock-shock interaction. This assumption is based on the analysis and modeling of the single-dish observations of CTA102 (Paper I). Methods. In this paper we study the kinematics of CTA102 at several frequencies using VLBI observations. From the modeled jet features we derived estimates for the evolution of the physical parameters, such as the particle density and the magnetic field. Furthermore, we combined our observations during the 2006 flare with long-term VLBA monitoring of the source at 15GHz and 43 GHz. Results. We cross-identified seven features throughout our entire multifrequency observations and find evidence of two possible recollimation shocks around 0.1mas (deprojected 18 pc at a viewing angle ϑ = 2.6°) and 6.0mas (deprojected 1 kpc) from the core. The 43 GHz observations reveal a feature ejected at epoch tej = 2005.9 ± 0.2, which could be connected to the 2006 April radio flare. Furthermore, this feature might be associated with the traveling component involved in the possible shock-shock interaction, which gives rise to the observed double peak structure in the single-dish light curves reported in Paper I. [ABSTRACT FROM AUTHOR]

Published
2013
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27. Radio-to-γ-ray monitoring of the narrow-line Seyfert 1 galaxy PMN J0948+0022 from 2008 to 2011.

Author

Foschini, L., Angelakis, E., Fuhrmann, L., Ghisellini, G., Hovatta, T., Lahteenmaki, A., Lister, M. L., Braito, V., Gallo, L., Hamilton, T. S., Kino, M., Komossa, S., Pushkarev, A. B., Thompson, D. J., Tibolla, O., Tramacere, A., Carramiñana, A., Carrasco, L., Falcone, A., and Giroletti, M.

Subjects
RADIO frequency, PROTOTYPES, LUMINOSITY distance, QUASARS, DIFFERENCES
Abstract

We present more than three years of observations at different frequencies, from radio to high-energy γ-rays, of the Narrow-Line Seyfert 1 (NLS1) Galaxy PMN J0948+0022 (z = 0.585). This source is the first NLS1 detected at energies above 100 MeV and therefore can be considered the prototype of this emerging new class of γ-ray emitting active galactic nuclei (AGN). The observations performed from 2008 August 1 to 2011 December 31 confirmed that PMN J0948+0022 generates a powerful relativistic jet, which is able to develop an isotropic luminosity at γ-rays of the order of 1048 erg s-1, at the level of powerful quasars. The evolution of the radiation emission of this source in 2009 and 2010 followed the canonical expectations of relativistic jets with correlated multiwavelength variability (γ-rays followed by radio emission after a few months), but it was difficult to retrieve a similar pattern in the light curves of 2011. The comparison of γ-ray spectra before and including 2011 data suggested that there was a softening of the highenergy spectral slope. We selected five specific epochs to be studied by modelling the broad-band spectrum, which are characterised by an outburst at γ-rays or very low/high flux at other wavelengths. The observed variability can largely be explained by changes in the injected power, the bulk Lorentz factor of the jet, or the electron spectrum. The characteristic time scale of doubling/halving flux ranges from a few days to a few months, depending on the frequency and the sampling rate. The shortest doubling time scale at γ-rays is 2.3 ± 0.5 days. These small values underline the need of highly sampled multiwavelength campaigns to better understand the physics of these sources. [ABSTRACT FROM AUTHOR]

Published
2012
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28. Radio-optical-gamma-ray properties of MOJAVE AGN detected by Fermi/LAT.

Author

Arshakian, T. G., León-Tavares, J., Böttcher, M., Torrealba, J., Chavushyan, V. H., Lister, M. L., Ros, E., and Zensus, J. A.

Subjects
GALACTIC nuclei, SPECTRAL energy distribution, BL Lacertae objects, GAMMA ray astronomy, RADIO astronomy
Abstract

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 between non-simultaneous radio, optical, and γ-ray measurements. Methods. We perform a multi-band statistical analysis to investigate the relations between the emissions in different bands and reproduce these relations by modeling of the spectral energy distributions of blazars. Results. There is a significant correlation between the γ-ray luminosity and the optical nuclear and radio (15 GHz) luminosities of blazars. We report a well defined positive correlation between the γ-ray luminosity and the radio-optical loudness for quasars and BL Lacertae type objects (BL Lacs). A strong positive correlation is found between the radio luminosity and the γ-ray-optical loudness for quasars, while a negative correlation between the optical luminosity and the γ-ray-radio loudness is present for BL Lacs. Modeling of these correlations with a simple leptonic jet model for blazars indicates that variations of the accretion disk luminosity (and hence the jet power) is able to reproduce the trends observed in most of the correlations. To reproduce all observed correlations, variations of several parameters, such as the accretion power, jet viewing angle, Lorentz factor, and magnetic field of the jet, are required. [ABSTRACT FROM AUTHOR]

Published
2012
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