Vilppu Piirola
 


piirola@utu.fi

Väisäläntie 20

Kaarina


: https://orcid.org/0000-0003-0186-206X

  
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  • Broadband linear polarimetry of exoplanet Upsilon Andromedae b: Constraints on the orbital and physical parameters  (2026)  
    • Proceedings of the International Astronomical Union
    (Toward) Discovery of Life beyond Earth and its Impact Abdul Qadir, Yasir; Berdyugin, Andrei V.; Kravtsov, Vadim; Piirola, Vilppu; Sakanoi, Takeshi; Kagitani, Masato; Poutanen, Juri


  • Optical polarimetry of the accreting black hole X-ray binary Swift J1727.8-1613 over the state transition and radio ejections  (2026)  
    • Astronomy and Astrophysics
     Nitindala, Anagha P.; Veledina, Alexandra; Kravtsov, Vadim; Berdyugin, Andrei V.; Diaz Teodori, Maria Alejandra; Piirola, Vilppu; Sakanoi, Takeshi; Kagitani, Masato; Berdyugina, Svetlana V.; Poutanen, Juri


  • Polarimetry and albedo of the near-Earth asteroid 2025 FA22  (2026)  
    • Astronomy and Astrophysics
     Rivet, J.-P.; Bagnulo, S.; Bendjoya, P.; Borisov, G.; Cellino, A.; Devogèle, M.; Gray, Z.; Ieva, S.; Kolokolova, L.; Kwon, Y. G.; Berdyugin, A.; Berdyugina, S. V.; Boulanger, L.; Dotto, E.; Fatka, P.; Frank E.; Lazzarin, M.; Piirola, V.; Pravec, P.; The NEOPOPs team


  • Polarisation angle variability in tidal disruption events  (2026)  
    • Astronomy and Astrophysics
     Floris, A.; Liodakis, I.; Koljonen, K. I. I.; Lindfors, E.; Agís-González, B.; Paggi, A.; Blinov, D.; Nilsson, K.; Agudo, I.; Charalampopoulos, P.; Escudero Pedrosa, J.; Piirola, V.


  • The IXPE and multifrequency polarimetric view of the extreme blazars 1ES 1101-232 and RGB J0710+591  (2026)  
    • Astronomy and Astrophysics
     Tavecchio, Fabrizio; Kim, Dawoon E.; Emery, Gabriel; Liodakis, Ioannis; Agudo, Iván; Coppi, Paolo; Tagliaferri, Giampiero; Di Gesu, Laura; Sbarrato, Tullia; Ballo, Lucia; Sciaccaluga, Alberto; Ehlert, Steven R.; Bonnoli, Giacomo; José Aceituno, Francisco; Casadio, Carolina; Casanova, Víctor; Donnarumma, Immacolata; Escudero, Juan; Morcuende, Daniel; Otero-Santos, Jorge; Sota, Alfredo; Piirola, Vilppu; Kouch, Pouya M.; Lindfors, Elina; Nilsson, Kari; Myserlis, Ioannis; Gurwell, Mark; Keating, Garrett; Rao, Ramprasad; Angelakis, Emmanouil; Kraus, Alexander; Imazawa, Ryo; Sasada, Mahito; Fukazawa, Yasushi; Kawabata, Koji S.; Uemura, Makoto; Mizuno, Tsunefumi; Nakaoka, Tatsuya; Tochihara, Sumie; Akai, Takahiro; Akitaya, Hiroshi; Bachev, Rumen; Strigachev, Anton; Benke, Petra; Debbrecht, Lena; Eich, Julia; Eppel, Florian; Gokus, Andrea; Hämmerich, Steven; Heßdörfer, Jonas; Kadler, Matthias; Kim, Sanghyun; Kirchner, Dana; Paraschos, Georgios Filippos; Rösch, Florian; Schulga, Wladislaw


  • Tracking Down the Broadband Polarimetric Properties of PG 1553+113  (2026)  
    • Astrophysical Journal
     Middei, Riccardo; Jorstad, Svetlana G.; Marscher, Alan P.; Liodakis, Ioannis; Perri, Matteo; Maselli, Alessandro; Ciprini, Stefano; Nardini, Emanuele; Puccetti, Simonetta; Di Gesu, Laura; Agudo, Iván; Kim, Dawoon E.; Myserlis, Ioannis; Trindade Falcão, A.; Król, D. Ł.; Antonelli, Lucio A.; Aniello, Tommaso; Kouch, Pouya M.; Nilsson, Kari; Lindfors, Elina; Pursimo, Tapio; Aceituno, Francisco José; Casanova, Víctor; Emery, Gabriel; Escudero Pedrosa, Juan; Otero-Santos, Jorge; Sota, Alfredo; Piirola, Vilppu; Borman, George A.; Grishina, Tatiana S.; Hagen-Thorn, Vladimir A.; Kopatskaya, Evgenia N.; Larionova, Elena G.; Morozova, Daria A.; Savchenko, Sergey S.; Shishkina, Ekaterina V.; Troitskiy, Ivan S.; Troitskaya, Yulia V.; Vasilyev, Andrey A.; Zhovtan, Alexey V.; Benke, Petra; Debbrecht, Lena; Eich, Julia; Eppel, Florian; Gokus, Andrea; Hämmerich, Steven; Hessdörfer, Jonas; Kadler, Matthias; Kirchner, Dana; Paraschos, Georgios F.; Rösch, Florian; Schulga, Wladislaw; Gurwell, Mark; Keating, Garrett; Rao, Ramprasad; Angelakis, Emmanouil; Kraus, Alexander; Agís-González, Beatriz; Blinov, Dmitry; Glykopoulou, Anastasia; Capecchiacci, Sara; Floris, Alberto; Fotis, Panagiotis; Koukoutsi, Alkmini; Kypriotakis, John A.; Langis, Dimitrios A.; Rompogiannakis, Dimitrios; Polychronakis, Aristeidis; Tsioupli, Vasiliki; Vogiatzis, Stavros; Zoumpoulakis, Orestis; Tochihara, Sumie; Imazawa, Ryo; Sasada, Mahito; Fukazawa, Yasushi; Kawabata, Koji S.; Uemura, Makoto; Mizuno, Tsunefumi; Nakaoka, Tatsuya; Akitaya, Hiroshi; Akai, Takahiro


  • A Two-week IXPE Monitoring Campaign on Mrk 421  (2025)  
    • Astrophysical Journal
     Maksym, W. Peter; Liodakis, Ioannis; Saade, M. Lynne; Kim, Dawoon E.; Middei, Riccardo; Gesu, Laura Di; Kiehlmann, Sebastian; Matzeu, Gabriele; Agudo, Iván; Marscher, Alan P.; Ehlert, Steven R.; Jorstad, Svetlana G.; Kaaret, Philip; Marshall, Herman L.; Pacciani, Luigi; Perri, Matteo; Puccetti, Simonetta; Kouch, Pouya M.; Lindfors, Elina; Aceituno, Francisco José; Bonnoli, Giacomo; Casanova, Víctor; Escudero, Juan; Gómez, José L.; Agís-González, Beatriz; Husillos, César; Morcuende, Daniel; Otero-Santos, Jorge; Sota, Alfredo; Piirola, Vilppu; Imazawa, Ryo; Sasada, Mahito; Fukazawa, Yasushi; Kawabata, Koji S.; Uemura, Makoto; Mizuno, Tsunefumi; Nakaoka, Tatsuya; Akitaya, Hiroshi; McCall, Callum; Jermak, Helen E.; Steele, Iain A.; Borman, George A.; Grishina, Tatiana S.; Hagen-Thorn, Vladimir A.; Kopatskaya, Evgenia N.; Larionova, Elena G.; Morozova, Daria A.; Savchenko, Sergey S.; Shishkina, Ekaterina V.; Troitskiy, Ivan S.; Troitskaya, Yulia V.; Vasilyev, Andrey A.; Zhovtan, Alexey V.; Myserlis, Ioannis; Gurwell, Mark; Keating, Garrett; Rao, Ramprasad; Pauley, Colt; Angelakis, Emmanouil; Kraus, Alexander; Berdyugin, Andrei V.; Kagitani, Masato; Kravtsov, Vadim; Poutanen, Juri; Sakanoi, Takeshi; Kang, Sincheol; Lee, Sang-Sung; Kim, Sang-Hyun; Cheong, Whee Yeon; Jeong, Hyeon-Woo; Song, Chanwoo; Blinov, Dmitry; Shablovinskaya, Elena; Antonelli, Lucio Angelo; Bachetti, Matteo; Baldini, Luca; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Bianchi, Stefano; Bongiorno, Stephen D.; Bonino, Raffaella; Brez, Alessandro; Bucciantini, Niccoló; Capitanio, Fiamma; Castellano, Simone; Cavazzuti, Elisabetta; Chen, Chien-Ting; Ciprini, Stefano; Costa, Enrico; Rosa, Alessandra De; Monte, Ettore Del; Lalla, Niccoló Di; Marco, Alessandro Di; Donnarumma, Immacolata; Doroshenko, Victor; Dovčiak, Michal; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Ferrazzoli, Riccardo; Garcia, Javier A.; Gunji, Shuichi; Hayashida, Kiyoshi; Heyl, Jeremy; Iwakiri, Wataru; Karas, Vladimir; Kislat, Fabian; Kitaguchi, Takao; Kolodziejczak, Jeffery J.; Krawczynski, Henric; Monaca, Fabio La; Latronico, Luca; Maldera, Simone; Manfreda, Alberto; Marin, Frédéric; Marinucci, Andrea; Massaro, Francesco; Matt, Giorgio; Mitsuishi, Ikuyuki; Muleri, Fabio; Negro, Michela; Ng, C.-Y.; O’Dell, Stephen L.; Omodei, Nicola; Oppedisano, Chiara; Papitto, Alessandro; Pavlov, George G.; Peirson, Abel Lawrence; Pesce-Rollins, Melissa; Petrucci, Pierre-Olivier; Pilia, Maura; Possenti, Andrea; Ramsey, Brian D.; Rankin, John; Ratheesh, Ajay; Roberts, Oliver J.; Romani, Roger W.; Sgró, Carmelo; Slane, Patrick; Soffitta, Paolo; Spandre, Gloria; Swartz, Douglas A.; Tamagawa, Toru; Tavecchio, Fabrizio; Taverna, Roberto; Tawara, Yuzuru; Tennant, Allyn F.; Thomas, Nicholas E.; Tombesi, Francesco; Trois, Alessio; Tsygankov, Sergey S.; Turolla, Roberto; Vink, Jacco; Weisskopf, Martin C.; Wu, Kinwah; Xie, Fei; Zane, Silvia


  • Detection of Compton Scattering in the Jet of 3C 84  (2025)  
    • Astrophysical Journal Letters
     Liodakis, Ioannis; Chakraborty, Sudip; Marin, Frédéric; Ehlert, Steven R.; Barnouin, Thibault; Kouch, Pouya M.; Nilsson, Kari; Lindfors, Elina; Pursimo, Tapio; Paraschos, Georgios F.; Middei, Riccardo; Trindade Falcão, Anna; Jorstad, Svetlana; Agudo, Iván; Kovalev, Yuri Y.; Casey, Jacob J.; Di Gesu, Laura; Kaaret, Philip; Kim, Dawoon E.; Kislat, Fabian; Ratheesh, Ajay; Saade, M. Lynne; Tombesi, Francesco; Marscher, Alan; Aceituno, Francisco José; Bonnoli, Giacomo; Casanova, Victor; Emery, Gabriel; Escudero Pedrosa, Juan; Morcuende, Daniel; Otero-Santos, Jorge; Sota, Alfredo; Piirola, Vilppu; Bachev, Rumen; Strigachev, Anton; Borman, George A.; Grishina, Tatiana S.; Hagen-Thorn, Vladimir A.; Kopatskaya, Evgenia N.; Larionova, Elena G.; Morozova, Daria A.; Savchenko, Sergey S.; Shishkina, Ekaterina V.; Troitskiy, Ivan S.; Troitskaya, Yulia V.; Vasilyev, Andrey A.; Zhovtan, Alexey V.; Myserlis, Ioannis; Gurwell, Mark; Keating, Garrett; Rao, Ramprasad; Kang, Sincheol; Lee, Sang-Sung; Kim, Sanghyun; Yeon Cheong, Whee; Jeong, Hyeon-Woo; Song, Chanwoo; Li, Shan; Nam, Myeong-Seok; Álvarez-Ortega, Diego; Casadio, Carolina; Angelakis, Emmanouil; Kraus, Alexander; Jormanainen, Jenni; Fallah Ramazani, Vandad; Chen, Chien-Ting; Costa, Enrico; Churazov, Eugene; Ferrazzoli, Riccardo; Galanti, Giorgio; Khabibullin, Ildar; O'dell, Stephen L.; Pacciani, Luigi; Roncadelli, Marco; Roberts, Oliver J.; Soffitta, Paolo; Swartz, Douglas A.; Tavecchio, Fabrizio; Weisskopf, Martin C.; Zhuravleva, Irina


  • High Optical-to-X-Ray Polarization Ratio Reveals Compton Scattering in BL Lacertae’s Jet  (2025)  
    • Astrophysical Journal Letters
     Agudo, Ivan; Liodakis, Ioannis; Otero-Santos, Jorge; Middei, Riccardo; Marscher, Alan; Jorstad, Svetlana; Zhang, Haocheng; Li, Hui; Di Gesu, Laura; Romani, Roger W.; Kim, Dawoon E.; Fenu, Francesco; Marshall, Herman L.; Pacciani, Luigi; Pedrosa, Juan Escudero; Aceituno, Francisco Jose; Agis-Gonzalez, Beatriz; Bonnoli, Giacomo; Casanova, Victor; Morcuende, Daniel; Piirola, Vilppu; Sota, Alfredo; Kouch, Pouya M.; Lindfors, Elina; McCall, Callum; Jermak, Helen E.; Steele, Iain A.; Borman, George A.; Grishina, Tatiana S.; Hagen-Thorn, Vladimir A.; Kopatskaya, Evgenia N.; Larionova, Elena G.; Morozova, Daria A.; Savchenko, Sergey S.; Shishkina, Ekaterina V.; Troitskiy, Ivan S.; Troitskaya, Yulia V.; Vasilyev, Andrey A.; Zhovtan, Alexey V.; Myserlis, Ioannis; Gurwell, Mark; Keating, Garrett; Rao, Ramprasad; Kang, Sincheol; Lee, Sang-Sung; Kim, Sanghyun; Cheong, Whee Yeon; Jeong, Hyeon-Woo; Angelakis, Emmanouil; Kraus, Alexander; Blinov, Dmitry; Maharana, Siddharth; Bachev, Rumen; Jormanainen, Jenni; Nilsson, Kari; Fallah Ramazani, Vandad; Casadio, Carolina; Fuentes, Antonio; Traianou, Efthalia; Thum, Clemens; Gomez, Jose L.; Antonelli, Lucio Angelo; Bachetti, Matteo; Baldini, Luca; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Bianchi, Stefano; Bongiorno, Stephen D.; Bonino, Raffaella; Brez, Alessandro; Bucciantini, Niccolo; Capitanio, Fiamma; Castellano, Simone; Cavazzuti, Elisabetta; Chen, Chien-Ting; Ciprini, Stefano; Costa, Enrico; De Rosa, Alessandra; Del Monte, Ettore; Di Lalla, Niccolo; Di Marco, Alessandro; Donnarumma, Immacolata; Doroshenko, Victor; Dovciak, Michal; Ehlert, Steven R.; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Ferrazzoli, Riccardo; Garcia, Javier A.; Gunji, Shuichi; Hayashida, Kiyoshi; Heyl, Jeremy; Iwakiri, Wataru; Kaaret, Philip; Karas, Vladimir; Kislat, Fabian; Kitaguchi, Takao; Kolodziejczak, Jeffery J.; Krawczynski, Henric; La Monaca, Fabio; Latronico, Luca; Maldera, Simone; Manfreda, Alberto; Marin, Frederic; Marinucci, Andrea; Massaro, Francesco; Matt, Giorgio; Mitsuishi, Ikuyuki; Mizuno, Tsunefumi; Muleri, Fabio; Negro, Michela; Ng, Chi-Yung; O'Dell, Stephen L.; Omodei, Nicola; Oppedisano, Chiara; Papitto, Alessandro; Pavlov, George G.; Peirson, Abel L.; Perri, Matteo; Pesce-Rollins, Melissa; Petrucci, Pierre-Olivier; Pilia, Maura; Possenti, Andrea; Poutanen, Juri; Puccetti, Simonetta; Ramsey, Brian D.; Rankin, John; Ratheesh, Ajay; Roberts, Oliver J.; Sgro, Carmelo; Slane, Patrick; Soffitta, Paolo; Spandre, Gloria; Swartz, Douglas A.; Tamagawa, Toru; Tavecchio, Fabrizio; Taverna, Roberto; Tawara, Yuzuru; Tennant, Allyn F.; Thomas, Nicholas E.; Tombesi, Francesco; Trois, Alessio; Tsygankov, Sergey S.; Turolla, Roberto; Vink, Jacco; Weisskopf, Martin C.; Wu, Kinwah; Xie, Fei; Zane, Silvia


  • High-precision broadband linear polarimetry of early-type binaries V. The binary system HD 165052 in the open cluster NGC 6530  (2025)  
    • Astronomy and Astrophysics
     Abdul Qadir, Yasir; Berdyugin, Andrei V.; Piirola, Vilppu; Sakanoi, Takeshi; Kagitani, Masato; Berdyugina, Svetlana V.



Last updated on 12/07/2023 11:58:30 AM