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
Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations
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, D. Baack, A. Babiäa, U. Barres De Almeida, J. A. Barrio, I. Batkoviäa, A. Bautista, 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, R. Carosi, M. Carretero-Castrillo, A. J. Castro-Tirado, D. Cerasole, G. Ceribella, Y. Chai, A. Cifuentes, J. Jormanainen, S. Kankkunen, P. M. Kouch, E. Lindfors, J. M. Miranda, M. Will, M. Aller, A. Lähteenmäki, M. Tornikoski
2025
Astronomy & Astrophysics
Multiwavelength study of OT 081: broadband modelling of a transitional blazar
H. Abe, S. Abe, V. A. Acciari, I. Agudo, T. Aniello, S. Ansoldi, L. A. Antonelli, A. Arbet Engels, C. Arcaro, M. Artero, K. Asano, D. Baack, A. Babić, A. Baquero, U. Barres de Almeida, I. Batković, J. Baxter, E. Bernardini, M. Bernardos, J. Bernete, A. Berti, C. Bigongiari, A. Biland, O. Blanch, G. Bonnoli, I. Burelli, G. Busetto, A. Campoy-Ordaz, A. Carosi, R. Carosi, M. Carretero-Castrillo, A. J. Castro-Tirado, Y. Chai, A. Cifuentes, S. Cikota, E. Colombo, J. L. Contreras, J. Cortina, S. Covino, G. D’Amico, V. D’Elia, P. Da Vela, F. Dazzi, J. Jormanainen, S. Suutarinen, V. Fallah Ramazani, T. Hovatta, A. Lähteenmäki, M. Tornikoski
2025
Monthly Notices of the Royal Astronomical Society
Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 2020
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, M. Artero, K. Asano, D. Baack, A. Babić, U. Barres De Almeida, J. A. Barrio, I. Batković, A. Bautista, 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, J. Jormanainen, S. Kankkunen, P. M. Kouch, E. Lindfors, J. M. Miranda, M. Will, V. Fallah Ramazani, T. Hovatta, S. Kiehlmann, A. Lähteenmäki, M. Tornikoski, W. Zheng
2025
Astronomy & Astrophysics
Very high-energy gamma-ray detection and long-term multiwavelength view of the flaring blazar B2 1811+31
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, A. Chilingarian, A. Cifuentes, E. Colombo, J. L. Contreras, J. Cortina, S. Covino, J. Jormanainen, S. Kankkunen, P. M. Kouch, V. Fallah Ramazani, T. Hovatta
2025
Astronomy & Astrophysics
The persistent shadow of the supermassive black hole of M87: II. Model comparisons and theoretical interpretations
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, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Avery E. Broderick, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, John E. Carlstrom, Andrew Chael, Chi Kwan Chan, Dominic O. Chang, Koushik Chatterjee, Shami Chatterjee, Ming Tang Chen, Yongjun Chen, Xiaopeng Cheng, Ilje Cho, Pierre Christian, Nicholas S. Conroy, John E. Conway, Thomas M. Crawford, Geoffrey B. Crew, Dong Jin Kim, Zhiyuan Li, Venkatessh Ramakrishnan, Tuomas Savolainen, Jan Wagner, Jasmin E. Washington, Kaj Wiik
2025
Astronomy & Astrophysics
Long term multi-wavelength analysis of the flat spectrum radio quasar OP 313
C. Bartolini, E. Angelakis, E. Bissaldi, D. Cerasole, F. D’Ammando, L. Di Venere, F. Giacchino, F. Giordano, M. Giroletti, A. Lähteenmäki, E. Lindfors, I. Myserlis, S. Loporchio, M. Tornikoski
2025
Nuovo Cimento della Societa Italiana di Fisica C
Origin of the ring ellipticity in the black hole images of M87
Rohan Dahale, Ilje Cho, Kotaro Moriyama, Kaj Wiik, Paul Tiede, José L. Gómez, Chi Kwan Chan, Roman Gold, Vadim Y. Bernshteyn, Marianna Foschi, Britton Jeter, Hung Yi Pu, Boris Georgiev, Abhishek V. Joshi, Alejandro Cruz-Osorio, Iniyan Natarajan, Avery E. Broderick, León D.S. Salas, Koushik Chatterjee, 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, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, Douglas Ferreira Carlos, Venkatessh Ramakrishnan, Tuomas Savolainen, Jasmin E. Washington
2025
Astronomy & Astrophysics
First polarization study of the M87 jet and active galactic nuclei at submillimeter wavelengths with ALMA
Ciriaco Goddi, Douglas F. Carlos, Geoffrey B. Crew, Lynn D. Matthews, Hugo Messias, Alejandro Mus, Iván Martí-Vidal, Ezequiel Albentosa-Ruíz, Mariafelicia De Laurentis, Elisabetta Liuzzo, Nicola Marchili, Kazi L.J. Rygl, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Balokoviä, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Avery E. Broderick, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, John E. Carlstrom, Andrew Chael, Chi Kwan Chan, Dominic O. Chang, Koushik Chatterjee, Shami Chatterjee, Ming Tang Chen, Venkatessh Ramakrishnan, Tuomas Savolainen, Jasmin E. Washington, Kaj Wiik
2025
Astronomy & Astrophysics
The polarisation behaviour of OJ 287 viewed through radio, millimetre, and optical observations between 2015 and 2017
J. Jormanainen, T. Hovatta, E. Lindfors, A. Berdyugin, W. Chamani, V. Fallah Ramazani, H. Jermak, S. G. Jorstad, A. Lähteenmäki, C. Mccall, K. Nilsson, P. Smith, I. A. Steele, J. Tammi, M. Tornikoski, F. Wierda
2025
Astronomy & Astrophysics
Long-term radio variability of active galactic nuclei at 37 GHz
Sofia Kankkunen, Merja Tornikoski, Talvikki Hovatta, Anne Lähteenmäki
2025
Astronomy & 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