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
Current Status of the EU-VGOS Project
Ezequiel Albentosa, Walter Alef, Simone Bernhardt, Johannes Böhm, Ruben Bolano Gonzalez, Yoon Choi, Thomas Gansmoe, Susana Garcia Espada, Cristina Garcia Niro, Anastasiia Girdiuk, Javier Gonzalz Garcia, Ann Silje Groøslie Wennesland, Jakob Gruber, Rüdiger Haas, Roger Hammargren, Robert Heinkelmann, Frédéric Jaron, Niko Petteri Kareinen, Ann-Silje Kirkvik, Hana Krasna, Elena Martinez, Ivan Marti-Vidal, Axel Meldahl, Alexey Melnikov, Sadegh Modiri, Alexander Neidhardt, Axel Nothnagel, Olivia Panzenböck, Victor Perez, Leonid Petrov, Christian Plötz, Helge Rottmann, Tuomas Savolainen, Matthias Schartner, Harald Schuh, Benedikt Soja, Eskil Varenius, Pablo de Vicente, Wagner Jan
2023
International VLBI Service for Geodesy and Astrometry 2022 General Meeting Proceedings
Time variability of the core-shift effect in the blazar 3C 454.3
Wara Chamani, Tuomas Savolainen, Eduardo Ros, Yuri Y. Kovalev, Kaj Wiik, Anne Lähteenmäki, Merja Tornikoski, Joni Tammi
2023
Astronomy and Astrophysics
The Event Horizon Telescope Image of the Quasar NRAO 530
Svetlana Jorstad, Maciek Wielgus, Rocco Lico, Sara Issaoun, Avery E. Broderick, Dominic W. Pesce, Jun Liu, Guang Yao Zhao, Thomas P. Krichbaum, Lindy Blackburn, Chi Kwan Chan, Michael Janssen, Venkatessh Ramakrishnan, Kazunori Akiyama, Antxon Alberdi, Juan Carlos Algaba, Katherine L. Bouman, Ilje Cho, Antonio Fuentes, José L. Gómez, Mark Gurwell, Michael D. Johnson, Jae Young Kim, Ru Sen Lu, Iván Martí-Vidal, Monika Moscibrodzka, Felix M. Pötzl, Efthalia Traianou, Ilse van Bemmel, Walter Alef, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Raymond Blundell, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Dong Jin Kim, Zhiyuan Li, Tuomas Savolainen, Jan Wagner
2023
Astrophysical Journal
Quasi-periodic behaviour in the radio and gamma-ray light curves of blazar PKS 1510-089
XP Li, Y Cai, HY Yang, A Lahteenmaki, M Tornikoski, J Tammi, S Suutarinen, Hai-Tao Yang, YH Luo, LS Wang
2023
Monthly Notices of the Royal Astronomical Society
Radio and γ-Ray Variability in Blazar S5 0716+714: A Year-like Quasi-periodic Oscillation in the Radio Light Curve
Xiao Pan Li, Hai Yan Yang, Yan Cai, Anne Lähteenmäki, Merja Tornikoski, Joni Tammi, Sofia Suutarinen, Hai Tao Yang, Yu Hui Luo, Li Sha Wang
2023
Astrophysical Journal
A ring-like accretion structure in M87 connecting its black hole and jet
Ru Sen Lu, Keiichi Asada, Thomas P. Krichbaum, Jongho Park, Fumie Tazaki, Hung Yi Pu, Masanori Nakamura, Andrei Lobanov, Kazuhiro Hada, Kazunori Akiyama, Jae Young Kim, Ivan Marti-Vidal, José L. Gómez, Tomohisa Kawashima, Feng Yuan, Eduardo Ros, Walter Alef, Silke Britzen, Michael Bremer, Avery E. Broderick, Akihiro Doi, Gabriele Giovannini, Marcello Giroletti, Paul T.P. Ho, Mareki Honma, David H. Hughes, Makoto Inoue, Wu Jiang, Motoki Kino, Shoko Koyama, Michael Lindqvist, Jun Liu, Alan P. Marscher, Satoki Matsushita, Hiroshi Nagai, Helge Rottmann, Tuomas Savolainen, Karl Friedrich Schuster, Zhi Qiang Shen, Pablo de Vicente, R. Craig Walker, Hai Yang, J. Anton Zensus, Juan Carlos Algaba, Alexander Allardi, Uwe Bach, Ryan Berthold, Dan Bintley, Do Young Byun, Carolina Casadio, Shu Hao Chang, Chih Cheng Chang, Song Chu Chang, Chung Chen Chen, Ming Tang Chen, Ryan Chilson, Tim C. Chuter, John Conway, Geoffrey B. Crew, Jessica T. Dempsey, Sven Dornbusch, Aaron Faber, Per Friberg, Javier González García, Miguel Gómez Garrido, Chih Chiang Han, Kuo Chang Han, Yutaka Hasegawa, Ruben Herrero-Illana, Yau De Huang, Chih Wei L. Huang, Violette Impellizzeri, Homin Jiang, Hao Jinchi, Taehyun Jung, Juha Kallunki, Petri Kirves, Kimihiro Kimura, Jun Yi Koay, Patrick M. Koch, Carsten Kramer, Alex Kraus, Derek Kubo, Cheng Yu Kuo, Chao Te Li, Lupin Chun Che Lin, Ching Tang Liu, Kuan Yu Liu, Wen Ping Lo, Li Ming Lu, Nicholas MacDonald, Pierre Martin-Cocher, Hugo Messias, Zheng Meyer-Zhao, Anthony Minter, Dhanya G. Nair, Hiroaki Nishioka, Timothy J. Norton, George Nystrom, Hideo Ogawa, Peter Oshiro, Nimesh A. Patel, Ue Li Pen, Yurii Pidopryhora, Nicolas Pradel, Philippe A. Raffin, Ramprasad Rao, Ignacio Ruiz, Salvador Sanchez, Paul Shaw, William Snow, T. K. Sridharan, Ranjani Srinivasan, Belén Tercero, Pablo Torne, Efthalia Traianou, Jan Wagner, Craig Walther, Ta Shun Wei, Jun Yang, Chen Yu Yu
2023
Nature
Photometry and spectroscopy of the Type Icn supernova 2021ckj: The diverse properties of the ejecta and circumstellar matter of Type Icn supernovae
T. Nagao, H. Kuncarayakti, K. Maeda, T. Moore, A. Pastorello, S. Mattila, K. Uno, S. J. Smartt, S. A. Sim, L. Ferrari, L. Tomasella, J. P. Anderson, T. W. Chen, L. Galbany, H. Gao, M. Gromadzki, C. P. Gutiérrez, C. Inserra, E. Kankare, E. A. Magnier, T. E. Müller-Bravo, A. Reguitti, D. R. Young
2023
Astronomy and Astrophysics
A multi-band study and exploration of the radio wave-gamma-ray connection in 3C 84
G. F. Paraschos, V. Mpisketzis, J. Y. Kim, G. Witzel, T. P. Krichbaum, J. A. Zensus, M. A. Gurwell, A. Lähteenmäki, M. Tornikoski, S. Kiehlmann, A. C.S. Readhead
2023
Astronomy and Astrophysics
Bridging astronomical, astrometric and geodetic scheduling for VGOS
Matthias Schartner, Arnaud Collioud, Patrick Charlot, Ming Hui Xu, Benedikt Soja
2023
Journal of Geodesy
Interactions between the Jet and Disk Wind in Nearby Radio-intermediate Quasar III Zw 2
Ailing Wang, Tao An, Shaoguang Guo, Prashanth Mohan, Wara Chamani, Willem A. Baan, Talvikki Hovatta, Heino Falcke, Tim J. Galvin, Natasha Hurley-Walker, Sumit Jaiswal, Anne Lahteenmaki, Baoqiang Lao, Weijia Lv, Merja Tornikoski, Yingkang Zhang
2023
Astrophysical Journal
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