Talvikki Hovatta profile picture
Talvikki
Hovatta
Docent, Department of Physics and Astronomy
Academy Research Fellow, Finnish Centre for Astronomy with ESO

Contact

Vesilinnantie 5
20500
Turku

Links

ORCID

Areas of expertise

astrophysics
radio astronomy
active galaxies
relativistic jets

Biography

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.

Teaching

I teach in two Master level courses "Radio Astronomy" and "Active Galactic Nuclei". I also advice B.Sc., M.Sc., and Post graduate students.

Research

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.

Publications

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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
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

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
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Multiwavelength Observations of the Blazar BL Lacertae: A New Fast TeV Gamma-Ray Flare (2018)

Astrophysical Journal
A. U. Abeysekara, W. Benbow , R. Bird , T. Brantseg, R. Brose, M. Buchovecky, J. H. Buckley, V. Bugaev,
M. P. Connolly, W. Cui, M. K. Daniel, A. Falcone, Q. Feng , J. P. Finley , L. Fortson, A. Furniss,
G. H. Gillanders, I. Gunawardhana, M. Hütten, D. Hanna, O. Hervet, J. Holder, G. Hughes, T. B. Humensky,
C. A. Johnson, P. Kaaret, P. Kar, M. Kertzman, F. Krennrich, M. J. Lang, T. T. Y. Lin, S. McArthur, P. Moriarty,
R. Mukherjee, S. O’Brien, R. A. Ong, A. N. Otte, N. Park, A. Petrashyk, M. Pohl, E. Pueschel , J. Quinn,
K. Ragan, P. T. Reynolds, G. T. Richards, E. Roache, C. Rulten, I. Sadeh, M. Santander, G. H. Sembroski,
K. Shahinyan, S. P. Wakely, A. Weinstein, R. M. Wells, P. Wilcox, D. A. Williams, B. Zitzer (The VERITAS Collaboration), S. G. Jorstad, A. P. Marscher, M. L. Lister, Y. Y. Kovalev, A. B. Pushkarev, T. Savolainen,
I. Agudo, S. N. Molina, J. L. Gómez, V. M. Larionov, G. A. Borman, A. A. Mokrushina, M. Tornikoski,
A. Lähteenmäki, W. Chamani, S. Enestam, S. Kiehlmann, T. Hovatta, P. S. Smith, P. Pontrelli, VERITAS Collaboration
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Detection of the blazar S4 0954+65 at very-high-energy with the MAGIC telescopes during an exceptionally high optical state (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, 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
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Long-term optical monitoring of TeV emitting blazars I. Data analysis (2018)

Astronomy and Astrophysics
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
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

The high brightness temperature of B0529+483 revealed by RadioAstron and implications for interstellar scattering (2018)

Monthly Notices of the Royal Astronomical Society
S. V. Pilipenko, Y. Y. Kovalev, A. S. Andrianov, U. Bach, S. Buttaccio, P. Cassaro, G. Cim`o, P. G. Edwards, M. P. Gawro´nski, L. I. Gurvits, T. Hovatta, D. L. Jauncey, M. D. Johnson, Yu. A. Kovalev, A. M. Kutkin, M. M. Lisakov, A. E. Melnikov, A. Orlati, A. G. Rudnitskiy, K. V. Sokolovsky, C. Stanghellini,P. de Vicente, P. A. Voitsik,P. Wolak, G. V. Zhekanis
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))
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