Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Valtaoja, Esko"'
Autor:
Ramakrishnan, Venkatessh, León-Tavares, Jonathan, Rastorgueva-Foi, Elizaveta A., Wiik, Kaj, Jorstad, Svetlana G., Marscher, Alan P., Tornikoski, Merja, Agudo, Iván, Lähteenmäki, Anne, Valtaoja, Esko, Aller, Margo F., Blinov, Dmitry A., Casadio, Carolina, Efimova, Natalia V., Gurwell, Mark A., Gómez, José L., Hagen-Thorn, Vladimir A., Joshi, Manasvita, Järvelä, Emilia, Konstantinova, Tatiana S., Kopatskaya, Evgenia N., Larionov, Valeri M., Larionova, Elena G., Larionova, Liudmilla V., Lavonen, Niko, MacDonald, Nicholas R., McHardy, Ian M., Molina, Sol N., Morozova, Daria A., Nieppola, Elina, Tammi, Joni, Taylor, Brian W., Troitsky, Ivan S.
Publikováno v:
MNRAS, vol. 445, pp. 1636-1646 (2014)
The blazar 1156+295 was active at gamma-ray energies, exhibiting three prominent flares during the year 2010. Here, we present results using the combination of broadband (X-ray through mm single dish) monitoring data and radio band imaging data at 43
Externí odkaz:
http://arxiv.org/abs/1409.2542
Autor:
Rastorgueva, Elizaveta A., Wiik, Kaj J., Bajkova, Anisa T., Valtaoja, Esko, Takalo, Leo O., Vetukhnovskaya, Yliya N., Mahmud, Mehreen
We study the jet kinematics of the blazar S5 0716+714 during its active state in 2003-2004 with multi-epoch VLBI observations. Aims. We present a kinematic analysis of the large-scale (0-12 mas) jet of 0716+714, based on the results of six epochs of
Externí odkaz:
http://arxiv.org/abs/1102.0409
Autor:
Savolainen, Tuomas, Wiik, Kaj, Valtaoja, Esko, Kadler, Matthias, Ros, Eduardo, Tornikoski, Merja, Aller, Margo F., Aller, Hugh D.
Publikováno v:
Astrophys.J.647:172-184,2006
We report the discovery of an extremely curved jet in the radio-loud quasar PKS2136+141. Multi-frequency Very Long Baseline Array (VLBA) images show a bending jet making a turn-around of 210 degrees in the plane of the sky, which is, to our knowledge
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605134
Autor:
Osterman, M. Angela, Miller, H. Richard, Campbell, Amy M., Marshall, Kevin, McFarland, John P., Aller, Hugh, Aller, Margo, Fried, Robert E., Kurtanidze, Omar M., Nikolashvili, Maria G., Tornikoski, Merja, Valtaoja, Esko
Publikováno v:
Astron.J.132:873-882,2006
PG 1553+11 was the target of a coordinated three week multiwavelength campaign during 2003 April and May. A significant X-ray flare was observed during the second half of this campaign. Although no optical flare was recorded during the X-ray campaign
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605076
Publikováno v:
Open Astronomy, Vol 20, Iss 2, Pp 275-280 (2011)
An interpretation of high-frequency (20-2400 Hz) fast quasiperiodic oscillations of magnetars in terms of an equivalent electric circuit is given. Observed periods and the very high quality of quasi-periodic oscillations are explained. The oscillatio
Externí odkaz:
https://doaj.org/article/ca182f2d3263456aa9679a31d26cc5c0
Autor:
Valtaoja, Esko
Publikováno v:
Jahrbuch für Finnisch-Deutsche Literaturbeziehungen; 2019, Vol. 51, p81-87, 7p
Publikováno v:
Astrophysical Phenomena Revealed by Space VLBI : Proceedings of the VSOP Symposium held at the Institute of Space and Astronautical Science, 19-21 January, 2000. :321-324
VSOPシンポジウム(2000年1月19日-21日. 宇宙科学研究所(ISAS)）, 相模原市, 神奈川県
VSOP Symposium (January 19-21, 2000. Institute of Space and Astronautical Science(ISAS)), Sagamihara, Kanagawa Japan
資料番号: SA6
VSOP Symposium (January 19-21, 2000. Institute of Space and Astronautical Science(ISAS)), Sagamihara, Kanagawa Japan
資料番号: SA6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::fbdbcaabc3f50820fa5d7fc54f59cd16
http://id.nii.ac.jp/1696/00047283/
http://id.nii.ac.jp/1696/00047283/
Autor:
Valtaoja, Esko
Publikováno v:
Tieteessä tapahtuu
Stephen Webb: Jos maailmankaikkeus kuhisee elämää ... Missä kaikki ovat? Viisikymmentä ratkaisua Fermin paradoksiin ja maan ulkopuolisen elämän arvoitukseen. Suom. Hannu Karttunen. Tähtitieteellinen yhdistys Ursa 2005, sid. 333 s.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=a89337edbe55::74633ca26aaf245602cd8231bf8ae981
https://journal.fi/tt/article/view/56474
https://journal.fi/tt/article/view/56474
Autor:
Valtaoja, Esko
Publikováno v:
Tieteessä tapahtuu
Kari Enqvist: Kosmoksen hahmo. WSOY 2003.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=a89337edbe55::acad4e258f91cd75cc43352185fbb820
https://journal.fi/tt/article/view/57335
https://journal.fi/tt/article/view/57335
Autor:
Valtaoja, Esko
Publikováno v:
Tieteessä tapahtuu
Martin Rees: Ennen alkua - oma maailmankaikkeutemme ja muut. Suom. Hannu Karttunen. Tähtitieteellinen yhdistys Ursa 2000, 314 s.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=a89337edbe55::c06d6d8fd7e52df9ebf0e9cc623139b5
https://journal.fi/tt/article/view/57926
https://journal.fi/tt/article/view/57926