Talvikki Hovatta
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.
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.
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.
Publications
- Locating the γ-ray emitting region in the quasar 4C +01.28 (2022)
- POS Proceedings of Science
European VLBI Network Mini-Symposium and Users' Meeting 2021 (EVN2021) Rösch F., Kadler M., Ros E., Gurwell M., Hovatta T., Kreter M., MacDonald N.R., Readhead A.C.S.
(A4 Refereed article in a conference publication )
- MAGIC and H.E.S.S. detect VHE gamma rays from the blazar OT081 for the first time: a deep multiwavelength study (2022)
- POS Proceedings of Science
37th International Cosmic Ray Conference (ICRC2021) Manganaro M., Seglar-Arroyo M., Becerra González J., Sanchez D., Cerruti M., Tavecchio F., Fallah-Ramazani V., Esteban Gutierrez A., Agudo I., Ciprini S., Filippenko A. V., Hovatta T., Jermak H., Jorstad S. G., Kopatskaya E. N., Lähteenmäki A., Larionov V. M., Larionova L. V., Marscher A., Morozova D. A., Pahljina M., Tornikoski M., Troitskaya Yu. V., Troitsky I., Verrecchia F., Weaver Z. R., Xiao H. B., Zheng W.; on behalf of the MAGIC, H.E.S.S., and Fermi-LAT Collaborations
(A4 Refereed article in a conference publication )
- Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020 (2022)
- Monthly Notices of the Royal Astronomical Society
Acciari VA, Ansoldi S, Antonelli LA, Engels AA, Artero M, Asano K, Baack D, Babic A, Baquero A, de Almeida UB, Barrio JA, Batkovic I, Gonzalez JB, Bednarek W, Bellizzi L, Bernardini E, Bernardos M, Berti A, Besenrieder J, Bhattacharyya W, Bigongiari C, Biland A, Blanch O, Bonnoli G, Bosnjak Z, Busetto G, Carosi R, Ceribella G, Cerruti M, Chai Y, Chilingarian A, Cikota S, Colak SM, Colombo E, Contreras JL, Cortina J, Covino S, D'Amico G, D'Elia V, Da Vela P, Dazzi F, De Angelis A, De Lotto B, Delfino M, Delgado J, Mendez CD, Depaoli D, Di Pierro F, Di Venere L, Espineira ED, Prester DD, Donini A, Dorner D, Doro M, Elsaesser D, Ramazani VF, Fattorini A, Ferrara G, Fonseca MV, Font L, Fruck C, Fukami S, Lopez RJG, Garczarczyk M, Gasparyan S, Gaug M, Giglietto N, Giordano F, Gliwny P, Godinovic N, Green JG, Green D, Hadasch D, Hahn A, Heckmann L, Herrera J, Hoang J, Hrupec D, Hutten M, Inada T, Inoue S, Ishio K, Iwamura Y, Jimenez I, Jormanainen J, Jouvin L, Kajiwara Y, Karjalainen M, Kerszberg D, Kobayashi Y, Kubo H, Kushida J, Lamastra A, Lelas D, Leone F, Lindfors E, Lombardi S, Longo F, Lopez-Coto R, Lopez-Moya M, Lopez-Oramas A, Loporchio S, Fraga BMD, Maggio C, Majumdar P, Makariev M, Mallamaci M, Maneva G, Manganaro M, Mannheim K, Maraschi L, Mariotti M, Martinez M, Mazin D, Menchiari S, Mender S, Micanovic S, Miceli D, Miener T, Minev M, Miranda JM, Mirzoyan R, Molina E, Moralejo A, Morcuende D, Moreno V, Moretti E, Neustroev V, Nigro C, Nilsson K, Nishijima K, Noda K, Nozaki S, Ohtani Y, Oka T, Otero-Santos J, Paiano S, Palatiello M, Paneque D, Paoletti R, Paredes JM, Pavletic L, Penil P, Perennes C, Persic M, Moroni PGP, Prandini E, Priyadarshi C, Puljak I, Rhode W, Ribo M, Rico J, Righi C, Rugliancich A, Saha L, Sahakyan N, Saito T, Sakurai S, Satalecka K, Saturni FG, Schleicher B, Schmidt K, Schweizer T, Sitarek J, Snidaric I, Sobczynska D, Spolon A, Stamerra A, Strom D, Strzys M, Suda Y, Suric T, Takahashi M, Tavecchio F, Temnikov P, Terzic T, Teshima M, Tosti L, Truzzi S, Tutone A, Ubach S, van Scherpenberg J, Vanzo G, Acosta MV, Ventura S, Verguilov V, Vigorito CF, Vitale V, Vovk I, Will M, Wunderlich C, Zaric D, de Palma F, D'Ammando F, Barnacka A, Sahu DK, Hodges M, Hovatta T, Kiehlmann S, Max-Moerbeck W, Readhead ACS, Reeves R, Pearson TJ, Lahteenmaki A, Bjorklund I, Tornikoski M, Tammi J, Suutarinen S, Hada K, Niinuma K
(A1 Refereed original research article in a scientific journal)
- Multiwavelength Variability Power Spectrum Analysis of the Blazars 3C 279 and PKS 1510-089 on Multiple Timescales (2022) Goyal Arti, Soida Marian, Stawarz Łukasz, Wiita Paul J., Nilsson Kari, Jorstad Svetlana, Marscher Alan P., Aller Margo F., Aller Hugh D., Lähteenmäki Anne, Hovatta Talvikki, Zoła Staszek, Nalewajko Krzysztof, Tornikoski Merja, Tammi Joni, Hodges Mark, Kiehlmann Sebastian, Readhead Anthony C. S., Max-Moerbeck Walter, Lindfors Elina, Ramazani Vandad Fallah, Reichart D. E., Caton D. B., Valverde Janeth, Horan Deirdre, Ojha Roopesh, van Zyl Pfesesani
(A1 Refereed original research article in a scientific journal)
- New Tests of Milli-lensing in the Blazar PKS 1413+135 (2022) Peirson AL, Liodakis I, Readhead ACS, Lister ML, Perlman ES, Aller MF, Blandford RD, Grainge KJB, Green DA, Gurwell MA, Hodges MW, Hovatta T, Kiehlmann S, Lahteenmaki A, Max-Moerbeck W, Mcaloone T, O'Neill S, Pavlidou V, Pearson TJ, Ravi V, Reeves RA, Scott PF, Taylor GB, Titterington DJ, Tornikoski M, Vedantham HK, Wilkinson PN, Williams DT, Zensus JA
(A1 Refereed original research article in a scientific journal)
- TELAMON and OVRO detection of an inverted spectrum and radio flare of TXS0310+022 coincident with IceCube-220304A #15266 (2022) Astronomer's Telegram Kadler Matthias, Hovatta Talvikki, Kiehlmann Sebastian, Readhead Anthony C., Eppel Florian, Hessdoerfer Jonas, Roesch Florian, Telamon Team, Ovro Monitoring Team
(D2 Article in a professional compilation book)
- The Baikal-GVD neutrino telescope: search for high-energy cascades (2022)
- POS Proceedings of Science
37th International Cosmic Ray Conference (ICRC2021) Allakhverdyan V.A., Avrorin A.D., Avrorin A.V., Aynutdinov V.M., Bannasch R., Bardаčová Z., Belolaptikov I.A., Borina I.V., Brudanin V.B., Budnev N.M., Dik V.Y., Domogatsky G.V., Doroshenko A.A., Dvornický R., Dyachok A.N., Dzhilkibaev Z.A.M., Eckerová E., Elzhov T.V., Fajt L., Fialkovsky S.V., Gafarov A.R., Golubkov K.V., Gorshkov N.S., Gress T.I., Katulin M.S., Kebkal K.G., Kebkal O.G., Khramov E.V., Kolbin M.M., Konischev K.V., Kopański K.A., Korobchenko A.V., Koshechkin A.P., Kozhin V.A., Kruglov M.V., Kryukov M.K., Kulepov V.F., Malecki P., Malyshkin Y.M., Milenin M.B., Mirgazov R.R., Naumov D.V., Nazari V., Noga W., Petukhov D.P., Pliskovsky E.N., Rozanov M.I., Rushay V.D., Ryabov E.V., Safronov G.B., Shaybonov B.A., Shelepov M.D., Šimkovic F., Sirenko A.E., Skurikhin A.V., Solovjev A.G., Sorokovikov M.N., Štekl I., Stromakov A.P., Sushenok E.O., Suvorova O.V., Tabolenko V.A., Tarashansky B.A., Yablokova Y.V., Yakovlev S., Zaborov D.N., Kovalev Y.A., Kovalev Y.Y., Plavin A.V., Troitsky S.V., Erkenov A.K., Mufakharov T.V., Sotnikova Y.V., Hovatta T., Kiehlmann S., Readhead A.C.S.
(A4 Refereed article in a conference publication )
- The flaring radio-bright blazar PKS 0215+015 coincident with the high energy neutrino alert IceCube-220225A #15247 (2022) Astronomer's Telegram Plavin A.V., Kovalev Y.Y., Troitsky S.V., Kovalev Yu. A., Popkov A.V., Lister M.L., Gomez J.L., Hovatta T., Kiehlmann S., Liodakis I., Readhead A.C.S., Erkenov A.K., Sotnikova Y.V., Zhekanis G.V.
(D2 Article in a professional compilation book)
- The hunt for extraterrestrial high-energy neutrino counterparts (2022)
- Astronomy and Astrophysics
Liodakis I., Hovatta T., Pavlidou V., Readhead A.C.S., Blandford R. D., Kiehlmann S., Lindfors E., Max-Moerbeck W., Pearson T. J., Petropoulou M.
(A1 Refereed original research article in a scientific journal)
- The radio-bright blazar PKS 1741-03 coincident with the high energy neutrino alert IceCube-220205B #15215 (2022) Astronomer's Telegram Kovalev Y.Y., Plavin A.V., Troitsky S.V., Kovalev Yu. A., Hovatta T., Kiehlmann S., Liodakis I., Readhead A.C.S., Erkenov A.K., Sotnikova Y.V., Tornikoski M., Lahteenmaki A., Jorstad S.G., Marscher A.P., Gómez J.L., Giroletti M., Marchili N., Righini S., Pushkarev A.B.
(D2 Article in a professional compilation book)
