Radio Astronomy
Radio Astronomy is studied by Anne Lähteenmäki Group that is part of the Department of Electronics and Nanoengineering, Aalto University. The group is located in the Metsähovi Radio Observatory.
Radio telescopes are used to probe the sky at radio frequencies. The objects detected range from the Sun to the most distant of all radio sources in the universe, the cosmic microwave background (CMB). Radio frequencies penetrate even the thickest of dust clouds in the Galaxy, and allow us to see what is behind them. For example, the best way to map the structure of the Galaxy is to observe the abundant neutral hydrogen at 1.4 GHz (=21 cm). For more information on radio astronomical observations, see information on research projects at Metsähovi Radio Observatory.
Group members
Latest publications
First detection of VHE gamma-ray signal from the FSRQ TON 0599
K. Abe, S. Abe, J. Abhir, A. Abhishek, V. A. Acciari, A. Aguasca-Cabot, I. Agudo, T. Aniello, S. Ansoldi, L. A. Antonelli, A. Arbet Engels, C. Arcaro, K. Asano, A. Babić, U. Barres De Almeida, J. A. Barrio, L. Barrios-Jiménez, I. Batković, J. Baxter, J. Becerra González, W. Bednarek, E. Bernardini, J. Bernete, A. Berti, J. Besenrieder, C. Bigongiari, A. Biland, O. Blanch, G. Bonnoli, E. Bronzini, I. Burelli, A. Campoy-Ordaz, A. Carosi, R. Carosi, M. Carretero-Castrillo, A. J. Castro-Tirado, D. Cerasole, G. Ceribella, Y. Chai, A. Cifuentes, J. L. Contreras, J. Cortina, S. Covino, J. Jormanainen, S. Kankkunen, P. M. Kouch, E. Järvelä, A. Lähteenmäki, M. Tornikoski
2026
Monthly Notices of the Royal Astronomical Society
Characterizing Candidate Blazar Counterparts of the Ultra-high-energy Event KM3-230213A
O. Adriani, S. Aiello, A. Albert, A. R. Alhebsi, M. Alshamsi, S. Alves Garre, A. Ambrosone, F. Ameli, M. Andre, L. Aphecetche, M. Ardid, S. Ardid, J. Aublin, F. Badaracco, L. Bailly-Salins, Z. Bardačová, B. Baret, A. Bariego-Quintana, Y. Becherini, M. Bendahman, F. Benfenati Gualandi, M. Benhassi, M. Bennani, D. M. Benoit, E. Berbee, E. Berti, V. Bertin, P. Betti, S. Biagi, M. Boettcher, D. Bonanno, S. Bottai, A. B. Bouasla, J. Boumaaza, M. Bouta, M. Bouwhuis, C. Bozza, R. M. Bozza, H. Brânzaş, F. Bretaudeau, M. Breuhaus, R. Bruijn, J. Brunner, R. Bruno, E. Buis, R. Buompane, S. Buson, J. Busto, B. Caiffi, T. Hovatta
2026
Astronomical Journal
A long-term multiwavelength study of the flat spectrum radio quasar OP 313
C. Bartolini, E. Lindfors, A. Tramacere, M. Giroletti, D. Cerasole, I. Agudo, E. Angelakis, E. Bissaldi, F. Casaburo, F. D’Ammando, L. Di Venere, V. Fallah Ramazani, F. Giacchino, F. Giordano, M. Gurwell, J. Jormanainen, S. Jorstad, G. Keating, P. M. Kouch, A. Kraus, A. Lähteenmäki, S. Loporchio, N. Marchili, A. Marscher, I. Myserlis, R. Rao, S. Righini, M. Tornikoski
2026
Astronomy and Astrophysics
NOCTURNE I. The radio spectrum of narrow-line Seyfert 1 galaxies
M. Berton, E. Järvelä, S. Chen, L. Crepaldi, I. Varglund, M. Coloma Puga, A. Jimenez-Gallardo, A. Lahteenmaki, S. Panda, C. Piscitelli, A. Tortosa
2026
Astronomy & Astrophysics
Massive stars exploding in a He-rich circumstellar medium: XII. SN 2024acyl: A fast, linearly declining Type Ibn supernova with early flash-ionisation features
Y. Z. Cai, A. Pastorello, K. Maeda, J. W. Zhao, Z. Y. Wang, Z. H. Peng, A. Reguitti, L. Tartaglia, A. V. Filippenko, Y. Pan, G. Valerin, B. Kumar, Z. Wang, M. Fraser, J. P. Anderson, S. Benetti, S. Bose, T. G. Brink, E. Cappellaro, T. W. Chen, X. L. Chen, N. Elias-Rosa, A. Esamdin, A. Gal-Yam, M. González-Bañuelos, M. Gromadzki, C. P. Gutiérrez, C. Inserra, A. Iskandar, T. Kangas, E. Kankare, T. Kravtsov, H. Kuncarayakti, L. P. Li, C. X. Liu, X. K. Liu, P. Lundqvist, K. Matilainen, S. Mattila, S. Moran, T. E. Müller-Bravo, T. Nagao, T. Petrushevska, G. Pignata, I. Salmaso, S. J. Smartt, J. Sollerman, S. Srivastav, M. D. Stritzinger, L. T. Wang, S. Y. Yan, Y. Yang, Y. P. Yang, W. Zheng, X. Z. Zou, L. Y. Chen, X. L. Du, Q. L. Fang, A. Fiore, F. Ragosta, S. Zha, J. J. Zhang, X. W. Liu, J. M. Bai, B. Wang, X. F. Wang
2026
Astronomy and Astrophysics
Insights into jet–NLR energetics in PMN J0948+0022
B. Dalla Barba, L. Foschini, M. Berton, A. Lähteenmäki, M. Tornikoski, E. Sani, L. Crepaldi, E. Congiu, G. Venturi, W. J. Hon, A. Vietri
2026
Contributions of the Astronomical Observatory Skalnate Pleso
Spectral index evolution of the limb-brightened jet in 3C 84
L. C. Debbrecht, G. F. Paraschos, E. Ros, T. P. Krichbaum, U. Bach, M. A. Gurwell, J. A. Hodgson, M. Janssen, J. -Y. Kim, M. M. Lisakov, N. R. MacDonald, D. G. Nair, J. Oh, J. A. Zensus
2026
Astronomy & Astrophysics
Rapid jet ejection from PKS 0215+015 coincident with a high-energy neutrino event
F. Eppel, M. Kadler, E. Ros, P. Benke, L. C. Debbrecht, J. Eich, P. G. Edwards, M. Giroletti, A. Gokus, S. Hammerich, J. Hessdorfer, M. Janssen, S. Kim, D. Kirchner, Y. Y. Kovalev, T. P. Krichbaum, R. Ojha, G. F. Paraschos, F. Rosch, W. Schulga, J. Sinapius, J. Stevens
2026
Astronomy & Astrophysics
Locating the missing large-scale emission in the jet of M87*with short EHT baselines
Boris Georgiev, Paul Tiede, Sebastiano D. von Fellenberg, Michael Janssen, Iniyan Natarajan, Lindy Blackburn, Jongho Park, Erandi Chavez, Andrew T. West, Kotaro Moriyama, Jun Yi Koay, Hendrik Mueller, Dhanya G. Nair, Avery E. Broderick, Maciek Wielgus, Kazunori Akiyama, Ezequiel Albentosa-Ruiz, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne-Kathrin Baczko, David Ball, Mislav Balokovic, Bidisha Bandyopadhyay, John Barrett, Michi Baubock, Bradford A. Benson, Dan Bintley, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, Britton Jeter, Dong-Jin Kim, Zhiyuan Li, Georgios Filippos Paraschos, Venkatessh Ramakrishnan, Tuomas Savolainen, Jan Wagner, Jasmin E. Washington, Kaj Wiik
2026
Astronomy & Astrophysics
Spatially resolved polarization swings in the supermassive binary black hole candidate OJ 287 with first Event Horizon Telescope observations
José L. Gómez, Ilje Cho, Efthalia Traianou, Thomas P. Krichbaum, Guang Yao Zhao, Rocco Lico, Antonio Fuentes, Marianna Foschi, Rohan Dahale, Boris Georgiev, Kotaro Moriyama, Maciek Wielgus, Roman Gold, Dominic W. Pesce, Hendrik Müller, Svetlana Jorstad, Teresa Toscano, Jan Röder, José M. Martí, Manel Perucho, Yuri Y. Kovalev, Stefanie Komossa, Achamveedu Gopakumar, Mauri J. Valtonen, Gabriele Bruni, Sunil Chandra, Kazunori Akiyama, Ezequiel Albentosa-Ruíz, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Baloković, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Britton Jeter, Venkatessh Ramakrishnan, Tuomas Savolainen, Kaj Wiik
2026
Astronomy and Astrophysics
Contact:
Associate Professor Anne Lähteenmäki
Email: anne.lahteenmaki at aalto.fi
Tel.: +358 50 4419 492
Postal address:
Department of Electronics and Nanoengineering
Aalto University Metsähovi Radio Observatory
P.O. Box 13000, 00076 Aalto, Finland
Visiting address:
Metsähovi Radio Observatory
Metsähovintie 114, 02540 Kylmälä