1. Granvik, Mikael; Muinonen, Karri; Virta-nen, Jenni; Bowell, E.; Wasserman, L. H.: Link-ing simulated Large Synoptic Survey Telescope as-teroid observations. Astrometry in the Age of the
Next Generation of Large Telescopes (ASP Confer-ence Series 338). Proceedings of a meeting held 18-20 October 18-2004 at Lowell Observatory, Flagstaff, Arizona, USA. Edited by P. Kenneth Seidelmann and Alice K. B. Monet. San Francisco: Astronom-ical Society of the Pacific, 2005., 362-365.
2. Granvik, Mikael; Muinonen, Karri; Virta-nen, Jenni; Delb´o, M.; Saba, L.; de Sanctis, G.;
Morbidelli, R.; Cellino, A.; Tedesco, E.: Linking Very Large Telescope asteroid observations. Dy-namics of Populations of Planetary Systems, Pro-ceedings of IAU Colloquium 197, held 31 August - 4 September, 2004 in Belgrade, Serbia and Mon-tenegro. Edited by Z. Knezevic and A. Milani.
Cambridge: Cambridge University Press, p.231-238.
3. Harju, Jorma: From dying stars to the proto-Solar nebula - the chemical evolution of interstellar matter. Research seminar: ”Exoplanets and astro-biology”. Jetsu, L. & Palviainen, A. (eds). Obser-vatory Report 3/2005, University of Helsinki, 7-12.
4. Juvela, Mika; Padoan, P.: Radiative transfer in 1D to 3D. Proceedings of the dusty and molecu-lar universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A. Wil-son. ESA SP-577, Noordwijk, Netherlands: ESA Publications Division, ISBN 92-9092-855-7, 2005, 373-374.
5. Lehtinen, Kimmo K.;Mattila, Kalevi; Lemke, D.: A comparative study of two globules from op-tical to far-infrared wavelengths. Proceedings of the dusty and molecular universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A. Wilson. ESA SP-577, No-ordwijk, Netherlands: ESA Publications Division, ISBN 92-9092-855-7, 2005, 379-380.
6. Kolokolova, L.;Muinonen, Karri; Boehnnhardt, H.; Bagnulo, S.; Barucci, A.; Rosenbush, V.: Prob-ing Solar Nebula UsProb-ing Polarization of Kuiper Belt Objects. Astronomical Polarimetry: Current Sta-tus and Future Directions (ASP Conference Series 343). Proceedings of the Conference held 15-19 March, 2004 in Waikoloa, Hawai’i, USA. Edited by A. Adamson, C. Aspin, C. J. Davis, p.194.
7. Lumme, Kari; Penttil¨a, Antti; Muinonen, Karri: Coherent backscattering by aggregates of spherical constituents. Proceedings of the 8th Con-ference on Electromagnetic and Light Scattering by Nonspherical Particles: Theory, Measurements,
and Applications, Eds. F. Moreno, J. J. L´ opez-Moreno, O. Mu˜noz, and A. Molina. Salobre˜na, Granada, Spain, May 16-20, 2005, 203-206.
8. Muinonen, Karri: Coherent backscattering by spherical and plane-parallel random media of mis-cellaneous scatterers. Proceedings of the 8th Con-ference on Electromagnetic and Light Scattering by Nonspherical Particles: Theory, Measurements, and Applications, Eds. F. Moreno, J. J. L´ opez-Moreno, O. Mu˜noz, and A. Molina. Salobre˜na, Granada, Spain, May 16-20, 2005, 233-236.
9. Muinonen, Karri; Sun, W.; Videen, G.; Ngo, D.: Light scattering by tetrahedral particles using physical-optics and finite-difference time-domain techniques. Proceedings of the 8th Conference on Electromagnetic and Light Scattering by Nonspher-ical Particles: Theory, Measurements, and Appli-cations, Eds. F. Moreno, J. J. L´opez-Moreno, O.
Mu˜noz, and A. Molina. Salobre˜na, Granada, Spain, May 16-20, 2005, 237-240.
10. Muinonen, Karri; Rantala, Jari; Granvik, Mikael: Exoplanet discovery and orbit computa-tion using radial velocity data. Research seminar:
”Exoplanets and astrobiology”. Jetsu, L. & Palvi-ainen, A. (eds). Observatory Report 3/2005, Uni-versity of Helsinki, 21-25.
11. Muinonen, Karri;Virtanen, Jenni;Granvik, Mikael; Laakso, Teemu: Asteroid Orbits with Gaia: Inversion and Prediction. Proceedings of the Gaia Symposium The Three-Dimensional Universe with Gaia (ESA SP-576). Held at the Observatoire de Paris-Meudon, 4-7 October 2004. Editors: C.
Turon, K.S. O’Flaherty, M.A.C. Perryman. pp.
223-240.
12. Penttil¨a, Antti;Lumme, Kari: Numerical solu-tion to the first-order scattering by rough surfaces.
Proceedings of the 8th Conference on Electromag-netic and Light Scattering by Nonspherical Par-ticles: Theory, Measurements, and Applications, Eds. F. Moreno, J. J. L´opez-Moreno, O. Mu˜noz, and A. Molina. Salobre˜na, Granada, Spain, May 16-20, 2005, 265-268.
13. Ryyn¨anen, Ky¨osti: T¨ahtitiede semioottisena toi-mintana. 24. Suomen semiotiikan seuran sympo-sium, Imatra 11.-12.6.2005. Abstracts 12.6.2005, pp. 15-20.
14. Torppa, Johanna; Muinonen, Karri: Statis-tical Inversion of Gaia Photometry for Asteroid Spins and Shapes. Proceedings of the Gaia Sympo-sium The Three-Dimensional Universe with Gaia
(ESA SP-576). Held at the Observatoire de Paris-Meudon, 4-7 October 2004. Editors: C. Turon, K.S. O’Flaherty, M.A.C. Perryman, 321-324.
15. Videen, G.; Shkuratov, Y.; Zubko, E.; Petrov, D.;
Sun, W.; Nousiainen, T.;Muinonen, Karri; Vo-shchinnikov, N.; Il’in, V.: Modeling irregular aerosols and their scattered light. Proceedings of the 8th Conference on Electromagnetic and Light Scatter-ing by Nonspherical Particles: Theory, Measure-ments, and Applications, Eds. F. Moreno, J. J.
L´opez-Moreno, O. Mu˜noz, and A. Molina. Salo-bre˜na, Granada, Spain, May 16-20, 2005, 305-308.
16. Virtanen, Jenni; Muinonen, Karri; Mignard, F.: Asteroid Orbits with Gaia: Simulated Exam-ples. Proceedings of the Gaia Symposium The Three-Dimensional Universe with Gaia (ESA SP-576). Held at the Observatoire de Paris-Meudon, 4-7 October 2004. Editors: C. Turon, K.S. O’Fla-herty, M.A.C. Perryman. , 325-328.
17. Virtanen, Jenni;Muinonen, Karri;Granvik, Mikael; Laakso, Teemu: Collision orbits and phase transition for 2004 AS1 at discovery. Dy-namics of Populations of Planetary Systems, Pro-ceedings of IAU Colloquium 197, held 31 August - 4 September, 2004 in Belgrade, Serbia and Mon-tenegro. Edited by Z. Knezevic and A. Milani.
Cambridge: Cambridge University Press, p.239-248.
18. Zubko, E.; Muinonen, Karri; Nousiainen, T.;
Shkuratov, Yu.; Videen, G.: Influence of surface roughness on scattering properties of wavelength-size particles simulating regolith grains. Vernadsky Institute – Brown University Microsymposium 42 on Comparative Planetology (Vernadsky Institute, Moscow, Russia, October 10-12, 2005), 2pp.
8 Academic degrees after 1995
1995 M.Sc. Diana Hannikainen 1996 Ph.Lic. P¨aivi Harjunp¨a¨a 1997 M.Sc. Asko Palviainen 1997 M. Sc. Thomas Hackman 1997 Ph.D. Mika Juvela 1998 M.Sc. Sanna Ker¨anen 1998 Ph.D. Kimmo Lehtinen 1998 Ph.D. Jukka Piironen 1999 M.Sc. Jere Kahanp¨a¨a 1999 M.Sc. Juho Schultz 1999 M.Sc. Johanna Torppa 1999 M.Sc. Jenni Virtanen 1999 Ph.D. Diana Hannikainen 2000 Ph.D. Jukka Nevalainen 2001 Ph.D. Petri V¨aisanen 2001 M.Sc. Peter Johansson 2002 Ph.D. Timo Nousiainen 2003 M.Sc. Mikael Granvik 2003 Ph.D. Sanna Kaasalainen 2003 M.Sc. Jyri N¨ar¨anen 2003 M.Sc. Cajus Pomr´en 2003 M.Sc. Ky¨osti Ryyn¨anen 2003 M.Sc. Jani Tyynel¨a 2004 M.Sc. Jouni Kainulainen 2004 M.Sc. Jari Rantala 2005 Ph.D. Thomas Hackman 2005 Ph.D. P¨aivi Harjunp¨a¨a 2005 Ph.D. Jenni Virtanen 2005 Ph.D. Juho Schultz 2005 M.Sc. Kristiina Byckling 2005 M.Sc. Oskari Miettinen
M.Sc. Ph.Lic. Ph.D.
1995 1 -
-1996 - 1
-1997 2 - 1
1998 1 - 2
1999 4 - 1
2000 - - 1
2001 1 - 1
2002 - - 1
2003 5 - 1
2004 2 -
-2005 2 - 4
9 Observatory Board 2004-2006
Director Doc. Lauri Jetsu
Professors
Prof. Kalevi Mattila Prof. Kari Lumme Staff
Doc. Juhani Huovelin (Doc. Mika Juvela) M.Sc. Jenni Virtanen (Doc. Jorma Harju) Students
Student Jarkko Niemel¨a (Student Tuomas Lehto) M.Sc. Jyri N¨ar¨anen (Student Jani-Matti H¨atinen)
In November 2005, PSR was invited by the Gaia community to take charge of the dynamical modeling of solar system objects detected by Gaia. The ESA cornerstone mission will be launched in late 2011, and it has a nominal duration of five years. The optical path of both telescopes (Gaia will be looking in two directions simultaneously) is composed of six reflectors (M1-M6), two of which are common (M5-M6). The entrance pupil of each telescope is 1.45m * 0.5m and the focal length is 35m. The payload module features a common focal plane shared by both telescopes.
Drawing of he SIXS (Solar Intensity X-ray and particle Spectrometer) for ESA’s Bepicolombo mission to Mercury. The PI of SIXS is Juhani Huovelin from the Observatory. This large scale project will continue until 2019-20. There is also another significant contribution from the Observatory for SIXS's sister instrument MIXS, whose Co-PI is Karri Muinonen.
(Figure Credit: Oxford Instruments Analytical Ltd.)