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

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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Multimessenger Characterization of Markarian 501 during Historically Low X-Ray and & gamma;-Ray Activity (2023)

Astrophysical Journal Supplement
Abe H, Abe S, Acciari VA, Agudo I, Aniello T, Ansoldi S, Antonelli LA, Arbet-Engels A, Arcaro C, Artero M, Asano K, Baack D, Babic A, Baquero A, de Almeida UB, Barrio JA, Batkovic I, Baxter J, Gonzalez JB, Bednarek W, Bernardini E, Bernardos M, Berti A, Besenrieder J, Bhattacharyya W, Bigongiari C, Biland A, Blanch O, Bonnoli G, Bosnjak Z, Burelli I, Busetto G, Carosi R, Carretero-Castrillo M, Castro-Tirado AJ, Ceribella G, Chai Y, Chilingarian A, Cikota S, 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, Del Popolo A, Delfino M, Delgado J, Mendez CD, Depaoli D, Di Pierro F, Di Venere L, Espineira EDS, Prester DD, Donini A, Dorner D, Doro M, Elsaesser D, Emery G, Escudero J, Ramazani VF, Farina L, Fattorini A, Foffano L, Font L, Fruck C, Fukami S, Fukazawa Y, Lopez RJG, Garczarczyk M, Gasparyan S, Gaug M, Paiva JGG, Giglietto N, Giordano F, Gliwny P, Godinovic N, Grau R, Green D, Green JG, Hadasch D, Hahn A, Hassan T, Heckmann L, Herrera J, Hrupec D, Hutten M, Imazawa R, Inada T, Iotov R, Ishio K, Martinez IJ, Jormanainen J, Kerszberg D, Kobayashi Y, Kubo H, Kushida J, Lamastra A, Lelas D, Leone F, Lindfors E, Linhoff L, Lombardi S, Longo F, Lopez-Coto R, Lopez-Moya M, Lopez-Oramas A, Loporchio S, Lorini A, Lyard E, Fraga BMD, Majumdar P, Makariev M, Maneva G, Mang N, Manganaro M, Mangano S, Mannheim K, Mariotti M, Martinez M, Mas-Aguilar A, Mazin D, Menchiari S, Mender S, Micanovic S, Miceli D, Miener T, Miranda JM, Mirzoyan R, Molina E, Mondal HA, Moralejo A, Morcuende D, Moreno V, Nakamori T, Nanci C, Nava L, Neustroev V, Rosillo MN, Nigro C, Nilsson K, Nishijima K, Ekoume TN, Noda K, Nozaki S, Ohtani Y, Oka T, Okumura A, Otero-Santos J, Paiano S, Palatiello M, Paneque D, Paoletti R, Paredes JM, Pavletic L, Persic M, Pihet M, Pirola G, Podobnik F, Moroni PGP, Prandini E, Principe G, Priyadarshi C, Rhode W, Ribo M, Rico J, Righi C, Rugliancich A, Sahakyan N, Saito T, Sakurai S, Satalecka K, Saturni FG, Schleicher B, Schmidt K, Schmuckermaier F, Schubert JL, Schweizer T, Sitarek J, Sliusar V, Sobczynska D, Spolon A, Stamerra A, Striskovic J, Strom D, Strzys M, Suda Y, Suric T, Tajima H, Takahashi M, Takeishi R, Tavecchio F, Temnikov P, Terauchi K, Terzic T, Teshima M, Tosti L, Truzzi S, Tutone A, Ubach S, van Scherpenberg J, Acosta MV, Ventura S, Verguilov V, Viale I, Vigorito CF, Vitale V, Vovk I, Walter R, Will M, Wunderlich C, Yamamoto T, Zaric D, Cerruti M, Acosta-Pulido JA, Apolonio G, Bachev R, Balokovic M, Benitez E, Bjorklund I, Bozhilov V, Brown LF, Bugg A, Carbonell W, Carnerero MI, Carosati D, Casadio C, Chamani W, Chen WP, Chigladze RA, Damljanovic G, Epps K, Erkenov A, Feige M, Finke J, Fuentes A, Gazeas K, Giroletti M, Grishina TS, Gupta AC, Gurwell MA, Heidemann E, Hiriart D, Hou WJ, Hovatta T, Ibryamov S, Joner MD, Jorstad SG, Kania J, Kiehlmann S, Kimeridze GN, Kopatskaya EN, Kopp M, Korte M, Kotas B, Koyama S, Kramer JA, Kunkel L, Kurtanidze SO, Kurtanidze OM, Lahteenmaki A, Lopez JM, Larionov VM, Larionova EG, Larionova LV, Leto C, Lorey C, Mujica R, Madejski GM, Marchili N, Marscher AP, Minev M, Modaressi A, Morozova DA, Mufakharov T, Myserlis I, Nikiforova AA, Nikolashvili MG, Ovcharov E, Perri M, Raiteri CM, Readhead ACS, Reimer A, Reinhart D, Righini S, Rosenlehner K, Sadun AC, Savchenko SS, Scherbantin A, Schneider L, Schoch K, Seifert D, Semkov E, Sigua LA, Singh C, Sola P, Sotnikova Y, Spencer M, Steineke R, Stojanovic M, Strigachev A, Tornikoski M, Traianou E, Tramacere A, Troitskaya YV, Troitskiy IS, Trump JB, Tsai A, Valcheva A, Vasilyev AA, Verrecchia F, Villata M, Vince O, Vrontaki K, Weaver ZR, Zaharieva E, Zottmann N
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Milliarcsecond Core Size Dependence of the Radio Variability of Blazars (2023)

Symposium of the International Astronomical Union, Proceedings of the International Astronomical Union
Hsu Po-Chih, Yi Koay Jun, Matsushita Satoki, Hwang Chorng-Yuan, Hovatta Talvikki, Kiehlmann Sebastian, Max-Moerbeck Walter, Pearson Tim, Readhead Anthony, Reeves Rodrigo, Vedantham Harish
(Vertaisarvioitu artikkeli konferenssijulkaisussa (A4))

Long-Term multi-wavelength study of 1ES 0647+250 (2023)

Astronomy and Astrophysics
Acciari V.A., Aniello T., Ansoldi S., Antonelli L.A., Arbet Engels A., Arcaro C., Artero M., Asano K., Baack D., Babia A., Baquero A., Barres De Almeida U., Barrio J.A., Batkoviä I., Becerra González J., Bednarek W., Bernardini E., Bernardos M., Berti A., Besenrieder J., Bhattacharyya W., Bigongiari C., Biland A., Blanch O., Bökenkamp H., Bonnoli G., Bošnjak , Burelli I., Busetto G., Carosi R., Carretero-Castrillo M., Ceribella G., Chai Y., Chilingarian A., Cikota S., Colombo E., Contreras J.L., Cortina J., Covino S., Daamico G., Daelia V., Da Vela P., Dazzi F., De Angelis A., De Lotto B., Del Popolo A., Delfino M., Delgado J., Delgado Mendez C., Depaoli D., Di Pierro F., Di Venere L., Do Souto Espiñeira E., Dominis Prester D., Donini A., Dorner D., Doro M., Elsaesser D., Emery G., Fallah Ramazani V., Fariña L., Fattorini A., Font L., Fruck C., Fukami S., Fukazawa Y., García López R.J., Garczarczyk M., Gasparyan S., Gaug M., Giesbrecht Paiva J.G., Giglietto N., Giordano F., Gliwny P., Godinovia N., Green J.G., Green D., Hadasch D., Hahn A., Hassan T., Heckmann L., Herrera J., Hrupec D., Hütten M., Inada T., Iotov R., Ishio K., Iwamura Y., Jiménez Martínez I., Jormanainen J., Kerszberg D., Kobayashi Y., Kubo H., Kushida J., Lamastra A., Lelas D., Leone F., Lindfors E., Linhoff L., Lombardi S., Longo F., López-Coto R., López-Moya M., López-Oramas A., Loporchio S., Lorini A., Lyard E., Machado De Oliveira Fraga B., Majumdar P., Makariev M., Maneva G., Manganaro M., Mangano S., Mannheim K., Mariotti M., Martínez M., Mas Aguilar A., Mazin D., Menchiari S., Mender S., Mia Anovia S., Miceli D., Miener T., Miranda J.M., Mirzoyan R., Molina E., Mondal H.A., Moralejo A., Morcuende D., Moreno V., Nakamori T., Nanci C., Nava L., Neustroev V., Nievas Rosillo M., Nigro C., Nilsson K., Nishijima K., Njoh Ekoume T., Noda K., Nozaki S., Ohtani Y., Oka T., Otero-Santos J., Paiano S., Palatiello M., Paneque D., Paoletti R., Paredes J.M., Pavletia L., Persic M., Pihet M., Podobnik F., Prada Moroni P.G., Prandini E., Principe G., Priyadarshi C., Puljak I., Rhode W., Ribó M., Rico J., Righi C., Rugliancich A., Sahakyan N., Saito T., Sakurai S., Satalecka K., Saturni F.G., Schleicher B., Schmidt K., Schmuckermaier F., Schubert J.L., Schweizer T., Sitarek J., Sliusar V., Sobczynska D., Spolon A., Stamerra A., Striškovia J., Strom D., Strzys M., Suda Y., Suria T., Takahashi M., Takeishi R., Tavecchio F., Temnikov P., Terzia T., Teshima M., Tosti L., Truzzi S., Tutone A., Ubach S., Van Scherpenberg J., Vanzo G., Vazquez Acosta M., Ventura S., Verguilov V., Viale I., Vigorito C.F., Vitale V., Vovk I., Walter R., Will M., Wunderlich C., Yamamoto T., Zaria D., Acosta-Pulido J.A., Daammando F., Hovatta T., Kiehlmann S., Liodakis I., Leto C., Max-Moerbeck W., Pacciani L., Perri M., Readhead A.C.S., Reeves R.A., Verrecchia F.
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

The RoboPol sample of optical polarimetric standards (2023)

Astronomy and Astrophysics
Blinov D., Maharana S., Bouzelou F., Casadio C., Gjerløw E., Jormanainen J., Kiehlmann S., Kypriotakis J.A., Liodakis I., Mandarakas N., Markopoulioti L., Panopoulou G.V., Pelgrims V., Pouliasi A., Romanopoulos S., Skalidis R., Anche R.M., Angelakis E., Antoniadis J., Medhi B.J., Hovatta T., Kus A., Kylafis N., Mahabal A., Myserlis I., Paleologou E., Papadakis I., Pavlidou V., Papamastorakis I., Pearson T.J., Potter S.B., Ramaprakash A.N., Readhead A.C.S., Reig P., Słowikowska A., Tassis K., Zensus J.A.
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

VERITAS Discovery of Very High Energy Gamma-Ray Emission from S3 1227+25 and Multiwavelength Observations (2023)

Astrophysical Journal
Acharyya A, Adams CB, Archer A, Bangale P, Benbow W, Brill A, Christiansen JL, Chromey AJ, Errando M, Falcone A, Feng Q, Finley JP, Foote GM, Fortson L, Furniss A, Gallagher G, Hanlon W, Hanna D, Hervet O, Hinrichs CE, Hoang J, Holder J, Jin W, Johnson MN, Kaaret P, Kertzman M, Kieda D, Kleiner TK, Korzoun N, Krennrich F, Lang MJ, Lundy M, Maier G, McGrath CE, Millard MJ, Millis J, Mooney CL, Moriarty P, Mukherjee R, O'Brien S, Ong RA, Pohl M, Pueschel E, Quinn J, Ragan K, Reynolds PT, Ribeiro D, Roache E, Sadeh I, Sadun AC, Saha L, Santander M, Sembroski GH, Shang R, Splettstoesser M, Talluri AK, Tucci JV, Vassiliev VV, Williams DA, Wong SL, Hovatta T, Jorstad SG, Kiehlmann S, Lahteenmaeki A, Liodakis I, Marscher AP, Max-Moerbeck W, Readhead ACS, Reeves R, Smith PS, Tornikoski M
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Milliarcsecond core size dependence of the radio variability of blazars (2023)

Monthly Notices of the Royal Astronomical Society
Hsu Po-Chih, Koay Jun Yi, Matsushita Satoki, Hwang Chorng-Yuan, Hovatta Talvikki, Kiehlmann Sebastian, Readhead Anthony, Max-Moerbeck Walter, Reeves Rodrigo
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))