Department of Electronics and Nanoengineering

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.
Radiotelescope

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

Anne Lähteenmäki

Professori (Associate professor)
Tuomas Savolainen

Tuomas Savolainen

Senior Scientist
Department of Electronics and Nanoengineering

Minghui Xu

Research Fellow
T411 Dept. Electronics and Nanoeng

Latest publications

VHE gamma-ray detection of FSRQ QSO B1420+326 and modeling of its enhanced broadband state in 2020

V. A. Acciari, S. Ansoldi, L. A. Antonelli, A. Arbet Engels, M. Artero, K. Asano, D. Baack, A. Babić, A. Baquero, U. Barres De Almeida, J. A. Barrio, J. Becerra González, W. Bednarek, L. Bellizzi, E. Bernardini, M. Bernardos, A. Berti, J. Besenrieder, W. Bhattacharyya, C. Bigongiari, A. Biland, O. Blanch, G. Bonnoli, A. Bošnjak, G. Busetto, R. Carosi, G. Ceribella, M. Cerruti, Y. Chai, A. Chilingarian, S. Cikota, S. M. Colak, E. Colombo, J. L. Contreras, J. Cortina, S. Covino, G. D'Amico, V. D'Elia, P. Da Vela, F. Dazzi, A. De Angelis, B. De Lotto, M. Delfino, J. Delgado, C. Delgado Mendez, D. Depaoli, F. Di Pierro, L. Di Venere, E. Do Souto Espiñeira, D. Dominis Prester, A. Donini, D. Dorner, M. Doro, D. Elsaesser, V. Fallah Ramazani, A. Fattorini, G. Ferrara, L. Foffano, M. V. Fonseca, L. Font, C. Fruck, S. Fukami, R. J. Garciá López, M. Garczarczyk, S. Gasparyan, M. Gaug, N. Giglietto, F. Giordano, P. Gliwny, N. Godinović, J. G. Green, D. Green, D. Hadasch, A. Hahn, L. Heckmann, J. Herrera, J. Hoang, D. Hrupec, M. Hütten, T. Inada, S. Inoue, K. Ishio, Y. Iwamura, J. Jormanainen, L. Jouvin, Y. Kajiwara, M. Karjalainen, D. Kerszberg, Y. Kobayashi, H. Kubo, J. Kushida, A. Lamastra, D. Lelas, F. Leone, E. Lindfors, S. Lombardi, F. Longo, R. López-Coto, M. López-Moya, A. López-Oramas, S. Loporchio, B. Machado De Oliveira Fraga, C. Maggio, P. Majumdar, M. Makariev, M. Mallamaci, G. Maneva, M. Manganaro, K. Mannheim, L. Maraschi, M. Mariotti, M. Martínez, D. Mazin, S. Mender, S. Micánović, D. Miceli, T. Miener, M. Minev, J. M. Miranda, R. Mirzoyan, E. Molina, A. Moralejo, D. Morcuende, V. Moreno, E. Moretti, V. Neustroev, C. Nigro, K. Nilsson, D. Ninci, K. Nishijima, K. Noda, S. Nozaki, Y. Ohtani, T. Oka, J. Otero-Santos, S. Paiano, M. Palatiello, D. Paneque, R. Paoletti, J. M. Paredes, L. Pavletić, P. Peñil, C. Perennes, M. Persic, P. G. Prada Moroni, E. Prandini, C. Priyadarshi, I. Puljak, W. Rhode, M. Ribó, J. Rico, C. Righi, A. Rugliancich, L. Saha, N. Sahakyan, T. Saito, S. Sakurai, K. Satalecka, F. G. Saturni, B. Schleicher, K. Schmidt, T. Schweizer, J. Sitarek, I. Šnidarić, D. Sobczynska, A. Spolon, A. Stamerra, D. Strom, M. Strzys, Y. Suda, T. Surić, M. Takahashi, F. Tavecchio, P. Temnikov, T. Terzić, M. Teshima, N. Torres-Albà, L. Tosti, S. Truzzi, A. Tutone, J. Van Scherpenberg, G. Vanzo, M. Vazquez Acosta, S. Ventura, V. Verguilov, C. F. Vigorito, V. Vitale, I. Vovk, M. Will, D. Zarić, R. Angioni, F. D'Ammando, S. Ciprini, C. C. Cheung, M. Orienti, L. Pacciani, P. Prajapati, P. Kumar, S. Ganesh, M. Minev, A. Kurtenkov, A. Marchini, L. Carrasco, G. Escobedo, A. Porras, E. Recillas, A. Lähteenmäki, M. Tornikoski, M. Berton, J. Tammi, R. J.C. Vera, S. G. Jorstad, A. P. Marscher, Z. R. Weaver, M. Hart, M. K. Hallum, V. M. Larionov, G. A. Borman, T. S. Grishina, E. N. Kopatskaya, E. G. Larionova, A. A. Nikiforova, D. A. Morozova, S. S. Savchenko, Yu V. Troitskaya, I. S. Troitsky, A. A. Vasilyev, M. Hodges, T. Hovatta, S. Kiehlmann, W. Max-Moerbeck, A. C.S. Readhead, R. Reeves, T. J. Pearson 2021 Astronomy and Astrophysics

A transition from parabolic to conical shape as a common effect in nearby AGN jets

Y Y Kovalev, A B Pushkarev, E E Nokhrina, A V Plavin, V S Beskin, A V Chernoglazov, M L Lister, Tuomas Savolainen 2021 Monthly Notices of the Royal Astronomical Society

The Relativistic Jet Orientation and Host Galaxy of the Peculiar Blazar PKS 1413+135

A. C.S. Readhead, V. Ravi, I. Liodakis, M. L. Lister, V. Singh, M. F. Aller, R. D. Blandford, I. W.A. Browne, V. Gorjian, K. J.B. Grainge, M. A. Gurwell, M. W. Hodges, T. Hovatta, S. Kiehlmann, A. Lähteenmäki, T. McAloone, W. Max-Moerbeck, V. Pavlidou, T. J. Pearson, A. L. Peirson, E. S. Perlman, R. A. Reeves, B. T. Soifer, G. B. Taylor, M. Tornikoski, H. K. Vedantham, M. Werner, P. N. Wilkinson, J. A. Zensus 2021 Astrophysical Journal

Evidence of the Gaia-VLBI position differences being related to radio source structure

Minghui Xu, Susanne Lunz, James M. Anderson, Tuomas Savolainen, Nataliya Zubko, Harald Schuh 2021 Astronomy & Astrophysics

Observable quality assessment of broadband very long baseline interferometry system

Minghui Xu, James M. Anderson, Robert Heinkelmann, Susanne Lunz, Harald Schuh, Guangli Wang 2021 Journal of Geodesy

The Great Markarian 421 Flare of 2010 February: Multiwavelength Variability and Correlation Studies

A. U. Abeysekara, W. Benbow, R. Bird, A. Brill, R. Brose, M. Buchovecky, J. H. Buckley, J. L. Christiansen, A. J. Chromey, M. K. Daniel, J. Dumm, A. Falcone, Q. Feng, J. P. Finley, L. Fortson, A. Furniss, N. Galante, A. Gent, G. H. Gillanders, C. Giuri, O. Gueta, T. Hassan, O. Hervet, J. Holder, G. Hughes, T. B. Humensky, C. A. Johnson, P. Kaaret, P. Kar, N. Kelley-Hoskins, M. Kertzman, D. Kieda, M. Krause, F. Krennrich, S. Kumar, M. J. Lang, P. Moriarty, R. Mukherjee, T. Nelson, D. Nieto, M. Nievas Rosillo, S. O'Brien, R. A. Ong, A. N. Otte, N. Park, A. Petrashyk, A. Pichel, M. Pohl, R. R. Prado, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, G. T. Richards, E. Roache, A. C. Rovero, C. Rulten, I. Sadeh, M. Santander, G. H. Sembroski, K. Shahinyan, B. Stevenson, I. Sushch, J. Tyler, V. V. Vassiliev, S. P. Wakely, A. Weinstein, R. M. Wells, P. Wilcox, A. Wilhelm, D. A. Williams, B. Zitzer, V. A. Acciari, S. Ansoldi, L. A. Antonelli, A. Arbet Engels, D. Baack, A. Babić, B. Banerjee, U. Barres De Almeida, J. A. Barrio, J. Becerra González, W. Bednarek, L. Bellizzi, E. Bernardini, A. Berti, J. Besenrieder, W. Bhattacharyya, C. Bigongiari, A. Biland, O. Blanch, G. Bonnoli, G. Busetto, R. Carosi, G. Ceribella, Y. Chai, S. Cikota, S. M. Colak, U. Colin, E. Colombo, J. L. Contreras, Juan Cortina, S. Covino, V. D'Elia, P. Da Vela, F. Dazzi, A. De Angelis, B. De Lotto, M. Delfino, J. Delgado, F. Di Pierro, E. Do Souto Espiñera, D. Dominis Prester, D. Dorner, M. Doro, S. Einecke, D. Elsaesser, V. Fallah Ramazani, A. Fattorini, A. Fernández-Barral, G. Ferrara, D. Fidalgo, L. Foffano, M. V. Fonseca, L. Font, C. Fruck, D. Galindo, S. Gallozzi, R. J. García López, M. Garczarczyk, S. Gasparyan, M. Gaug, N. Godinović, D. Green, D. Guberman, D. Hadasch, A. Hahn, J. Herrera, J. Hoang, D. Hrupec, S. Inoue, K. Ishio, Y. Iwamura, H. Kubo, J. Kushida, A. Lamastra, D. Lelas, F. Leone, E. Lindfors, S. Lombardi, F. Longo, M. López, R. López-Coto, A. López-Oramas, B. Machado De Oliveira Fraga, C. Maggio, P. Majumdar, M. Makariev, M. Mallamaci, G. Maneva, M. Manganaro, K. Mannheim, L. Maraschi, M. Mariotti, M. Martínez, S. Masuda, D. Mazin, D. Miceli, M. Minev, J. M. Miranda, R. Mirzoyan, E. Molina, A. Moralejo, D. Morcuende, V. Moreno, E. Moretti, P. Munar-Adrover, V. Neustroev, A. Niedzwiecki, M. Nievas Rosillo, C. Nigro, K. Nilsson, D. Ninci, K. Nishijima, K. Noda, L. Nogués, M. Nöthe, S. Paiano, J. Palacio, M. Palatiello, D. Paneque, R. Paoletti, J. M. Paredes, P. Peñil, M. Peresano, M. Persic, P. G. Prada Moroni, E. Prandini, I. Puljak, W. Rhode, M. Ribó, J. Rico, C. Righi, A. Rugliancich, L. Saha, N. Sahakyan, T. Saito, K. Satalecka, T. Schweizer, J. Sitarek, I. Šnidarić, D. Sobczynska, A. Somero, A. Stamerra, D. Strom, M. Strzys, S. Sun, T. Surić, F. Tavecchio, P. Temnikov, T. Terzić, M. Teshima, N. Torres-Alba, S. Tsujimoto, J. Van Scherpenberg, G. Vanzo, M. Vazquez Acosta, I. Vovk, Martin Will, D. Zarić, H. D. Aller, M. F. Aller, M. T. Carini, D. Horan, B. Jordan, S. G. Jorstad, O. M. Kurtanidze, S. O. Kurtanidze, Anne Lahteenmaki, V. M. Larionov, E. G. Larionova, G. Madejski, A. P. Marscher, W. Max-Moerbeck, J. Ward Moody, D. A. Morozova, M. G. Nikolashvili, C. M. Raiteri, A. C.S. Readhead, J. L. Richards, A. C. Sadun, T. Sakamoto, L. A. Sigua, P. S. Smith, H. Talvikki, Joni Tammi, Merja Tornikoski, I. S. Troitsky, M. Villata 2020 Astrophysical Journal

Studies of stationary features in jets: BL Lacertae: I. The dynamics and brightness asymmetry on sub-parsec scales

T. G. Arshakian, A. B. Pushkarev, M. L. Lister, Tuomas Savolainen 2020 Astronomy and Astrophysics

Absorbed relativistic jets in radio-quiet narrow-line Seyfert 1 galaxies

Marco Berton, Emilia Järvelä, L. Crepaldi, Anne Lähteenmäki, Merja Tornikoski, E. Congiu, P. Kharb, G. Terreran, A. Vietri 2020 Astronomy and Astrophysics

Line shapes in narrow-line Seyfert 1 galaxies: A tracer of physical properties?

Marco Berton, Irene Björklund, Anne Lähteenmäki, E. Congiu, Emilia Järvelä, G. Terreran, G. La Mura 2020 Contributions of the Astronomical Observatory Skalnate Pleso

THEMIS: A Parameter Estimation Framework for the Event Horizon Telescope

Avery E. Broderick, Roman Gold, Mansour Karami, Jorge A. Preciado-López, Paul Tiede, Hung Yi Pu, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Keiichi Asada, Rebecca Azulay, Anne Kathrin Baczko, Mislav Baloković, John Barrett, Dan Bintley, Lindy Blackburn, Wilfred Boland, Katherine L. Bouman, Geoffrey C. Bower, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, Dominique Broguiere, Thomas Bronzwaer, Do Young Byun, John E. Carlstrom, Andrew Chael, Shami Chatterjee, Koushik Chatterjee, Ming Tang Chen, Yongjun Chen, Ilje Cho, John E. Conway, James M. Cordes, Geoffrey B. Crew, Yuzhu Cui, Jordy Davelaar, Mariafelicia De Laurentis, Roger Deane, Jessica Dempsey, Gregory Desvignes, Sheperd S. Doeleman, Ralph P. Eatough, Heino Falcke, Vincent L. Fish, Ed Fomalont, Raquel Fraga-Encinas, Per Friberg, Christian M. Fromm, Peter Galison, Charles F. Gammie, Roberto García, Olivier Gentaz, Boris Georgiev, Ciriaco Goddi, José L. Gómez, Minfeng Gu, Mark Gurwell, Kazuhiro Hada, Michael H. Hecht, Ronald Hesper, Luis C. Ho, Paul Ho, Mareki Honma, Chih Wei L. Huang, Lei Huang, David H. Hughes, Makoto Inoue, Sara Issaoun, David J. James, Michael Janssen, Britton Jeter, Wu Jiang, Alejandra Jiménez-Rosales, Michael D. Johnson, Svetlana Jorstad, Taehyun Jung, Ramesh Karuppusamy, Tomohisa Kawashima, Garrett K. Keating, Mark Kettenis, Jae Young Kim, Jongsoo Kim, Motoki Kino, Jun Yi Koay, Patrick M. Koch, Shoko Koyama, Michael Kramer, Carsten Kramer, Thomas P. Krichbaum, Cheng Yu Kuo, Sang Sung Lee, Yan Rong Li, Zhiyuan Li, Michael Lindqvist, Rocco Lico, Kuo Liu, Elisabetta Liuzzo, Wen Ping Lo, Andrei P. Lobanov, Laurent Loinard, Colin Lonsdale, Ru Sen Lu, Nicholas R. MacDonald, Jirong Mao, Alan P. Marscher, Iván Martí-Vidal, Satoki Matsushita, Lynn D. Matthews, Karl M. Menten, Yosuke Mizuno, Izumi Mizuno, James M. Moran, Kotaro Moriyama, Monika Moscibrodzka, Cornelia Müller, Hiroshi Nagai, Neil M. Nagar, Masanori Nakamura, Ramesh Narayan, Gopal Narayanan, Iniyan Natarajan, Roberto Neri, Chunchong Ni, Aristeidis Noutsos, Hiroki Okino, Héctor Olivares, Gisela N. Ortiz-León, Tomoaki Oyama, Daniel C.M. Palumbo, Jongho Park, Ue Li Pen, Dominic W. Pesce, Vincent Piétu, Richard Plambeck, Aleksandar Popstefanija, Oliver Porth, Ben Prather, Venkatessh Ramakrishnan, Ramprasad Rao, Mark G. Rawlings, Luciano Rezzolla, Bart Ripperda, Freek Roelofs, Alan Rogers, Eduardo Ros, Mel Rose, Helge Rottmann, Chet Ruszczyk, Benjamin R. Ryan, Kazi L.J. Rygl, Salvador Sánchez, David Sánchez-Arguelles, Mahito Sasada, Tuomas Savolainen, F. Peter Schloerb, Karl Friedrich Schuster, Lijing Shao, Zhiqiang Shen, Des Small, Bong Won Sohn, Jason Soohoo, Fumie Tazaki, Remo P.J. Tilanus, Michael Titus, Kenji Toma, Pablo Torne, Efthalia Traianou, Sascha Trippe, Shuichiro Tsuda, Ilse Van Bemmel, Huib Jan Van Langevelde, Daniel R. Van Rossum, Jan Wagner, John Wardle, Jonathan Weintroub, Norbert Wex, Robert Wharton, MacIek Wielgus, George N. Wong, Qingwen Wu, Doosoo Yoon, André Young, Ken Young, Ziri Younsi, Feng Yuan, Ye Fei Yuan, J. Anton Zensus, Guangyao Zhao, Shan Shan Zhao, Ziyan Zhu 2020 Astrophysical Journal
More information on our research in the Research database.
Research database

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

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