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514 results on '"Poutanen, Markku"'

2. Upgrading the Metsähovi Geodetic Research Station

Author

Poutanen, Markku, Bilker-Koivula, Mirjam, Eskelinen, Joona, Kallio, Ulla, Kareinen, Niko, Koivula, Hannu, Lahtinen, Sonja, Näränen, Jyri, Peltoniemi, Jouni, Raja-Halli, Arttu, Rouhiainen, Paavo, Zubko, Nataliya, Freymueller, Jeffrey T., Series Editor, and Sánchez, Laura, Assistant Editor

Published
2024
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3. The European GeoMetre project: developing enhanced large-scale dimensional metrology for geodesy

Author

Pollinger, Florian, Baselga, Sergio, Courde, Clément, Eschelbach, Cornelia, García-Asenjo, Luis, Garrigues, Pascual, Guillory, Joffray, Hedekvist, Per Olof, Helojärvi, Tuomas, Jokela, Jorma, Kallio, Ulla, Klügel, Thomas, Köchert, Paul, Lösler, Michael, Luján, Raquel, Meyer, Tobias, Neyezhmakov, Pavel, Pesce, Damien, Pisani, Marco, Poutanen, Markku, Prellinger, Günther, Sauthoff, Anni, Seppä, Jeremias, Truong, Daniel, Underwood, Robin, Wezka, Kinga, Wallerand, Jean-Pierre, and Wiśniewski, Mariusz

Published
2023
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5. Radio interferometric observation of an asteroid occultation

Author

Harju, Jorma, Lehtinen, Kimmo, Romney, Jonathan, Petrov, Leonid, Granvik, Mikael, Muinonen, Karri, Bach, Uwe, and Poutanen, Markku

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

The occultation of the radio galaxy 0141+268 by the asteroid (372) Palma on 2017 May 15 was observed using six antennas of the Very Long Baseline Array (VLBA). The shadow of Palma crossed the VLBA station at Brewster, Washington. Owing to the wavelength used, and the size and the distance of the asteroid, a diffraction pattern in the Fraunhofer regime was observed. The measurement retrieves both the amplitude and the phase of the diffracted electromagnetic wave. This is the first astronomical measurement of the phase shift caused by diffraction. The maximum phase shift is sensitive to the effective diameter of the asteroid. The bright spot at the shadow's center, the so called Arago--Poisson spot, is clearly detected in the amplitude time-series, and its strength is a good indicator of the closest angular distance between the center of the asteroid and the radio source. A sample of random shapes constructed using a Markov chain Monte Carlo algorithm suggests that the silhouette of Palma deviates from a perfect circle by 26+-13%. The best-fitting random shapes resemble each other, and we suggest their average approximates the shape of the silhouette at the time of the occultation. The effective diameter obtained for Palma, 192.1+-4.8 km, is in excellent agreement with recent estimates from thermal modeling of mid-infrared photometry. Finally, our computations show that because of the high positional accuracy, a single radio interferometric occultation measurement can reduce the long-term ephemeris uncertainty by an order of magnitude., Comment: 13 pages, 10 figures, to appear in the Astronomical Journal

Published
2018
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9. Radiation Mechanisms

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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10. Introduction

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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11. The Sun

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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12. Stellar Spectra

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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13. The Solar System

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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14. Objects of the Solar System

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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15. Celestial Mechanics

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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16. Photometric Concepts and Magnitudes

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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17. Observations and Instruments

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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18. Spherical Astronomy

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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19. Exoplanets

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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20. Cosmology

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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21. Binary Stars and Stellar Masses

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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22. Astrobiology

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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23. Galaxies

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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24. The Milky Way

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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25. Star Clusters and Associations

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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26. The Interstellar Medium

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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27. Compact Stars

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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28. Variable Stars

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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29. Stellar Evolution

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2017
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30. Implementation of the ETRS89 in Europe: Current Status and Challenges

Author

Bruyninx, Carine, Altamimi, Zuheir, Brockmann, Elmar, Caporali, Alessandro, Dach, Rolf, Dousa, Jan, Fernandes, Rui, Gianniou, Michail, Habrich, Heinz, Ihde, Johannes, Jivall, Lotti, Kenyeres, Ambrus, Lidberg, Martin, Pacione, Rosa, Poutanen, Markku, Szafranek, Karolina, Söhne, Wolfgang, Stangl, Günter, Torres, João, Völksen, Christof, Rizos, Chris, Series editor, and van Dam, Tonie, editor

Published
2017
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34. Photometric Concepts and Magnitudes

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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35. The Solar System

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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36. Stellar Spectra

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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37. Radiation Mechanisms

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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38. Binary Stars and Stellar Masses

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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39. Star Clusters and Associations

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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40. Cosmology

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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41. Celestial Mechanics

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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42. Spherical Astronomy

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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43. The Interstellar Medium

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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44. Galaxies

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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45. The Milky Way

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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46. Observations and Instruments

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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47. Introduction

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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48. Compact Stars

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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49. Stellar Evolution

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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50. Variable Stars

Author

Karttunen, Hannu, Kröger, Pekka, Oja, Heikki, Poutanen, Markku, Donner, Karl Johan, Karttunen, Hannu, editor, Kröger, Pekka, editor, Oja, Heikki, editor, Poutanen, Markku, editor, and Donner, Karl Johan, editor

Published
2003
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