Talvikki Hovatta
astrophysics; radio astronomy; active galaxies; relativistic jets
I started as a researcher in the Turku Collegium of Science and Medicine in September 2016. I obtained my PhD in 2009 from Helsinki University of Technology (now Aalto University) on the topic Radio variability of active galactic nuclei: analysis of long-term multifrequency data. I then worked as a postdoctoral research at Purdue University USA (2009-2011) and California Institute of Technology USA (2011-2014). I moved back to Finland in 2014 to work as Academy of Finland postdoctoral fellow at Aalto University, from where I moved to Tuorla Observatory when starting in the collegium researcher position. Since September 2018 I have been working as an Academy of Finland Research Fellow at the Finnish Centre for Astronomy with ESO.
My main research interest is in active galaxies and their relativistic plasma jets. In my research, I use observations at all wavelengths from radio to very-high-energy gamma rays. At the moment I'm especially interested in magnetic fields in the plasma jets, and how they affect the jet formation and radiation. I use polarization observations in the radio and optical wavelengths to study the magnetic field structures in the jets. For example, I have studied the magnetic fields around jets using millimeter-wavelength observations from the ALMA observatory. I'm also involved in several international research projects where the jets of active galaxies are studied in multiple wavelengths. Recently, I expanded my research to multimessenger astrophysics by studying the connection between the radio emission of active galaxies and the arrival times of high-energy neutrinos.
I teach in two Master level courses "Radio Astronomy" and "Active Galactic Nuclei". I also advice B.Sc., M.Sc., and Post graduate students.
- RoboPol: a four-channel optical imaging polarimeter (2019)
- Monthly Notices of the Royal Astronomical Society
A. N. Ramaprakash, C. V. Rajarshi, H. K. Das, P. Khodade, D. Modi, G. Panopoulou, S. Maharana, D. Blinov, E. Angelakis, C. Casadio, L. Fuhrmann, T. Hovatta, S. Kiehlmann, O. G. King, N. Kylafis, A. Kougentakis, A. Kus, A. Mahabal, A. Marecki, I. Myserlis, G. Paterakis, E. Paleologou, I. Liodakis, I. Papadakis, I. Papamastorakis, V. Pavlidou, E. Pazderski, T. J. Pearson, A. C. S. Readhead, P. Reig, A. Słowikowska, K. Tassis, J. A. Zensus
- (2019)
- Astronomy and AstrophysicsAstronomy and Astrophysics
Mandarakas N, Blinov D, Liodakis I, Kouroumpatzakis K, Zezas A, Panopoulou GV, Myserlis I, Angelakis E, Hovatta T, Kiehlmann S, Kokolakis K, Paleologou E, Pouliasi A, Skalidis R, Pavlidou V
- The presence of interstellar scintillation in the 15 GHz interday variability of 1158 OVRO-monitored blazars (2019)
- Monthly Notices of the Royal Astronomical SocietyAstronomy and Astrophysics
Koay JY, Jauncey DL, Hovatta T, Kiehlmann S, Bignall HE, Max-Moerbeck W, Pearson TJ, Readhead ACS, Reeves R, Reynolds C, Vedantham H
- Constraining the Limiting Brightness Temperature and Doppler Factors for the Largest Sample of Radio-bright Blazars2018
- Astrophysical JournalAstronomy and Astrophysics
Liodakis I, Hovatta T, Huppenkothen D, Kiehlmann S, Max-Moerbeck W, Readhead ACS
- Constraints on particles and fields from full Stokes observations of AGN (2018)
- GalaxiesAstronomy and Astrophysics
Daniel C. Homan, Talvikki Hovatta, Yuri Y. Kovalev, Matthew L. Lister, Alexander B. Pushkarev, Tuomas Savolainen
- Detection of persistent VHE gamma-ray emission from PKS 1510-089 by the MAGIC telescopes during low states between 2012 and 2017 (2018) Acciari VA, Ansoldi S, Antonelli LA, Engels AA, Arcaro C, Baack D, Babic A, Banerjee B, Bangale P, de Almeida UB, Barrio JA, Bednarek W, Bernardini E, Berti A, Besenrieder J, Bhattacharyya W, Bigongiari C, Biland A, Blanch O, Bonnoli G, Carosi R, Ceribella G, Cikota S, Colak SM, Colin P, Colombo E, Contreras JL, Cortina J, Covino S, D'Elia V, Da Vela P, Dazzi F, De Angelis A, De Lotto B, Delfino M, Delgado J, Di Pierro F, Espinera ED, Dominguez A, Prester DD, Dorner D, Doro M, Einecke S, Elsaesser D, Ramazani VF, Fattorini A, Fernandez-Barral A, Ferrara G, Fidalgo D, Foffano L, Fonseca MV, Font L, Fruck C, Galindo D, Gallozzi S, Lopez RJG, Garczarczyk M, Gaug M, Giammaria P, Godinovic N, Guberman D, Hadasch D, Hahn A, Hassan T, Herrera J, Hoang J, Hrupec D, Inoue S, Ishio K, Iwamura Y, Kubo H, Kushida J, Kuvezdic D, Lamastra A, Lelas D, Leone F, Lindfors, Lombardi S, Longo F, Lopez M, Lopez-Oramas A, Maggio C, Majumdar P, Makariev M, Maneva G, Manganaro M, Mannheim K, Maraschi L, Mariotti M, Martinez M, Masuda S, Mazin D, Minev M, Miranda JM, Mirzoyan R, Molina E, Moralejo A, Moreno V, Moretti E, Munar-Adrover P, Neustroev V, Niedzwiecki A, Rosillo MN, Nigro C, Nilsson K, Ninci D, Nishijima K, Noda K, Nogues L, Paiano S, Palacio J, Paneque D, Paoletti R, Paredes JM, Pedaletti G, Penil P, Peresano M, Persic M, Moroni PGP, Prandini E, Puljak I, Garcia JR, Rhode W, Ribo M, Rico J, Righi C, Rugliancich A, Saha L, Saito T, Satalecka K, Schweizer T, Sitarek J, Snidaric I, Sobczynska D, Somero A, Stamerra A, Strzys M, Suric T, Tavecchio F, Temnikov P, Terzic T, Teshima M, Torres-Alba N, Tsujimoto S, van Scherpenberg J, Vanzo G, Acosta MV, Vovk I, Ward JE, Will M, Zari D, Gonzalez JB, Raiteri CM, Sandrinelli A, Hovatta T, Kiehlmann S, Max-Moerbeck W, Tornikoski M, Lahteenmaki A, Tammi J, Ramakrishnan V, Thum C, Agudo I, Molina SN, Gomez JL, Fuentes A, Casadio C, Traianou E, Myserlis I, Kim JY
- Detection of the blazar S4 0954+65 at very-high-energy with the MAGIC telescopes during an exceptionally high optical state (2018) Ahnen ML, Ansoldi S, Antonelli LA, Arcaro C, Baack D, Babic A, Banerjee B, Bangale P, de Almeida UB, Barrio JA, Bednarek W, Bernardini E, Berse RC, Berti A, Bhattacharyya W, Biland A, Blanch O, Bonnoli G, Carosi R, Carosi A, Ceribella G, Chatterjee A, Colak SM, Colin P, Colombo E, Contreras JL, Cortina J, Covino S, Cumani P, Da Vela P, Dazzi F, De Angelis A, De Lotto B, Delfino M, Delgado J, Di Pierro F, Dominguez A, Prester DD, Dorner D, Doro M, Einecke S, Elsaesser D, Ramazani VF, Fernandez-Barral A, Fidalgo D, Fonseca MV, Font L, Fruck C, Galindo D, Lopez RJG, Garczarczyk M, Gaug M, Giammaria P, Godinovic N, Gora D, Guberman D, Hadasch D, Hahn A, Hassan T, Hayashida M, Herrera J, Hose J, Hrupec D, Ishio K, Konno Y, Kubo H, Kushida J, Kuvezdic D, Lelas D, Lindfors E, Lombardi S, Longo F, Lopez M, Maggio C, Majumdar P, Makariev M, Maneva G, Manganaro M, Mannheim K, Maraschi L, Mariotti M, Martinez M, Masuda S, Mazin D, Mielke K, Minev M, Miranda JM, Mirzoyan R, Moralejo A, Moreno V, Moretti E, Nagayoshi T, Neustroev V, Niedzwiecki A, Rosillo MN, Nigro C, Nilsson K, Ninci D, Nishijima K, Noda K, Nogues L, Paiano S, Palacio J, Paneque D, Paoletti R, Paredes JM, Pedaletti G, Peresano M, Persic M, Moroni PGP, Prandini E, Puljak I, Garcia JR, Reichardt I, Rhode W, Ribo M, Rico J, Righi C, Rugliancich A, Saito T, Satalecka K, Schweizer T, Sitarek J, Snidaric I, Sobczynska D, Stamerra A, Strzys M, Suric T, Takahashi M, Takalo L, Tavecchio F, Temnikov P, Terzic T, Teshima M, Torres-Alba N, Treves A, Tsujimoto S, Vanzo G, Acosta MV, Vovk I, Ward JE, Will M, Zaric D, Gonzalez JB, Tanaka Y, Ojha R, Finke J, Lahteenmaki A, Jarvela E, Tornikoski M, Ramakrishnan V, Hovatta T, Jorstad SG, Marscher AP, Larionov VM, Borman GA, Grishina TS, Kopatskaya EN, Larionova LV, Morozova DA, Savchenko SS, Troitskaya YV, Troitsky IS, Vasilyev AA, Agudo I, Molina SN, Casadio C, Gurwell M, Carnerero MI, Protasio C, Pulido JAA, Pulido JAA, Protasio C, Carnerero MI, Gurwell M, Casadio C, Molina SN, Agudo I
- Extreme HBL behavior of Markarian 501 during 2012 (2018) Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Arcaro, C., Babić, A., Banerjee, B., Bangale, P., Barresde Almeida, U., Barrio, J. A., BecerraGonzález, J., Bednarek, W., Bernardini, E., Berti, A., Bhattacharyya, W., Blanch, O., Bonnoli, G., Carosi, R., Carosi, A., Chatterjee, A., Colak, S. M., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., Cumani, P., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Di Pierro, F., Doert, M., Domínguez, A., Dominis Prester, D., Doro, M., Eisenacher lawion, D., Engelkemeier, M., Fallah Ramazani, V., Fernández-Barral, A., Fidalgo, D., Fonseca, M. V., Font, L., Fruck, C., Galindo, D., García López, R. J., Garczarczyk, M., Gaug, M., Giammaria, P., Godinović, N., Gora, D., Guberman, D., Hadasch, D., Hahn, A., Hassan, T., Hayashida, M., Herrera, J., Hose, J., Hrupec, D., Ishio, K., Konno, Y., Kubo, H., Kushida, J., Kuveždić, D., Lelas, D., Lindfors, E., Lombardi, S., Longo, F., López, M., Maggio, C., Majumdar, P., Makariev, M., Maneva, G., Manganaro, M., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Menzel, U., Minev, M., Miranda, J. M., Mirzoyan, R., Moralejo, A., Moreno, V., Moretti, E., Nagayoshi, T., Neustroev, V., Niedzwiecki, A., Nievas Rosillo, M., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Paiano, S., Palacio, J., Paneque, D., Paoletti, R., Paredes, J. M., Pedaletti, G., Peresano, M., Perri, L., Persic, M., Prada Moroni, P. G., Prandini, E., Puljak, I., Garcia, J. R., Reichardt, I., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saito, T., Satalecka, K., Schroeder, S., Schweizer, T., Shore, S. N., Sitarek, J., Šnidarić, I., Sobczynska, D., Stamerra, A., Strzys, M., Surić, T., Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Treves, A., Tsujimoto, S., Vanzo, G., Vazquez Acosta, M., Vovk, I., Ward, J. E., Will, M., Zarić, D., Arbet-Engels, A., Baack, D., Balbo, M., Biland, A., Blank, M., Bretz, T., Bruegge, K., Bulinski, M., Buss, J., Dmytriiev, A., Dorner, D., Einecke, S., Elsaesser, D., Herbst, T., Hildebrand, D., Kortmann, L., Linhoff, L., Mahlke, M., Mannheim, K., Mueller, S. A., Neise, D., Neronov, A., Noethe, M., Oberkirch, J., Paravac, A., Rhode, W., Schleicher, B., Schulz, F., Sedlaczek, K., Shukla, A., Sliusar, V., Walter, R., Archer, A., Benbow, W., Bird, R., Brose, R., Buckley, J. H., Bugaev, V., Christiansen, J. L., Cui, W., Daniel, M. K., Falcone, A., Feng, Q., Finley, J. P., Gillanders, G. H., Gueta, O., Hanna, D., Hervet, O., Holder, J., Hughes, G., Hütten, M., Humensky, T. B., Johnson, C. A., Kaaret, P., Kar, P., Kelley-Hoskins, N., Kertzman, M., Kieda, D., Krause, M., Krennrich, F., Kumar, S., Lang, M. J., Lin, T. T. Y., Maier, G., McArthur, S., Moriarty, P., Mukherjee, R., O'Brien, S., Ong, R. A., Otte, A. N., Park, N., Petrashyk, A., Pichel, A., Pohl, M., Quinn, J., Ragan, K., Reynolds, P. T., Richards, G. T., Roache, E., Rovero, A. C., Rulten, C., Sadeh, I., Santander, M., Sembroski, G. H., Shahinyan, K., Sushch, I., Tyler, J., Wakely, S. P., Weinstein, A., Wells, R. M., Wilcox, P., Wilhel, A., Williams, D. A., J Williamson, T., Zitzer, B., Perri, M., Verrecchia, F., Leto, C., Villata, M., Raiteri, C. M., Jorstad, S. G., Larionov, V. M., Blinov, D. A., Grishina, T. S., Kopatskaya, E. N., Larionova, E. G., Nikiforova, A. A., Morozova, D. A., Troitskaya, Yu. V., Troitsky, I. S., Kurtanidze, O. M., Nikolashvili, M. G., Kurtanidze, S. O., Kimeridze, G. N., Chigladze, R. A., Strigachev, A., Sadun, A. C., Moody, J. W., Chen, W. P., Lin, H. C., Acosta-Pulido, J. A., Arévalo, M. J., Carnerero, M. I., González-Morales, P. A., Manilla-Robles, A., Jermak, H., Steele, I., Mundell, C., Benítez, E., Hiriart, D., Smith, P. S., Max-Moerbeck, W., Readhead, A. C. S., Richards, J. L., Hovatta, T., Lähteenmäki, A., Tornikoski, M., Tammi, J., Georganopoulos, M., Baring, M. G.
- Long-term optical monitoring of TeV emitting blazars I. Data analysis (2018) K. Nilsson, E. Lindfors, L. O. Takalo, R. Reinthal, A. Berdyugin, A. Sillanpää, S. Ciprini, A. Halkola, P. Heinämäki, T. Hovatta, V. Kadenius, P. Nurmi, L. Ostorero, M. Pasanen, R. Rekola, J. Saarinen, J. Sainio, T. Tuominen, C. Villforth, T. Vornanen, B. Zaprudin
- Multi-wavelength characterization of the blazar S5 0716+714 during an unprecedented outburst phase (2018)
- Astronomy and Astrophysics
Ahnen ML, Ansoldi S, Antonelli LA, Arcaro C, Baack D, Babic A, Banerjee B, Bangale P, de Almeida UB, Barrio JA, Gonzalez JB, Bednarek W, Bernardini E, Berse RC, Berti A, Bhattacharyya W, Biland A, Blanch O, Bonnoli G, Carosi R, Carosi A, Ceribella G, Chatterjee A, Colak SM, Colin P, Colombo E, Contreras JL, Cortina J, Covino S, Cumani P, Da Vela P, Dazzi F, De Angelis A, De Lotto B, Delfino M, Delgado J, Di Pierro F, Dominguez A, Prester DD, Dorner D, Doro M, Einecke S, Elsaesser D, Ramazani VF, Fernandez-Barral A, Fidalgo D, Fonseca MV, Font L, Fruck C, Galindo D, Gallozzi S, Lopez RJG, Garczarczyk M, Gaug M, Giammaria P, Godinovic N, Gora D, Guberman D, Hadasch D, Hahn A, Hassan T, Hayashida M, Herrera J, Hose J, Hrupec D, Ishio K, Konno Y, Kubo H, Kushida J, Kuvezdic D, Lelas D, Lindfors E, Lombardi S, Longo F, Lopez M, Maggio C, Majumdar P, Makariev M, Maneva G, Manganaro M, Mannheim K, Maraschi L, Mariotti M, Martinez M, Masuda S, Mazin D, Mielke K, Minev M, Miranda JM, Mirzoyan R, Moralejo A, Moreno V, Moretti E, Nagayoshi T, Neustroev V, Niedzwiecki A, Rosillo MN, Nigro C, Nilsson K, Ninci D, Nishijima K, Noda K, Nogues L, Paiano S, Palacio J, Paneque D, Paoletti R, Paredes JM, Pedaletti G, Peresano M, Persic M, Moroni PGP, Prandini E, Puljak I, Garcia JR, Reichardt I, Rhode W, Ribo M, Rico J, Righi C, Rugliancich A, Saito T, Satalecka K, Schweizer T, Sitarek J, Snidaric I, Sobczynska D, Stamerra A, Strzys M, Suric T, Takahashi M, Takalo L, Tavecchio F, Temnikov P, Terzic T, Teshima M, Torres-Alba N, Treves A, Tsujimoto S, Vanzo G, Acosta MV, Vovk I, Ward JE, Will M, Zaric D, Bastieri D, Gasparrini D, Lott B, Rani B, Thompson DJ, Agudo I, Angelakis E, Borman GA, Casadio C, Grishina TS, Gurwel M, Hovatta T, Itoh R, Jarvela E, Jermak H, Jorstad S, Kopatskaya EN, Kraus A, Krichbaum TP, Kuin NPM, Lahteenmaki A, Larionov VM, Larionova LV, Lien AY, Madejski G, Marscher A, Myserlis I, Max-Moerbeck W, Molina SN, Morozova DA, Nalewajko K, Pearson TJ, Ramakrishnan V, Readhead ACS, Reeves RA, Savchenko SS, Steele IA, Tornikoski M, Troitskaya YV, Troitsky I, Vasilyev AA, Zensus JA
