Research output per year
Research output per year
Personal profile
Fields of Science
- 115 Astronomy, Space science
- interstellar molecular clouds, star formation
Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Statistical nuclear spin ratios of deuterated ammonia in the pre-stellar core L1544
Harju, J., Caselli, P., Sipilä, O., Spezzano, S., Belloche, A., Bizzocchi, L., Pineda, J. E., Redaelli, E. & Wyrowski, F., 13 Aug 2025, In: Astronomy & Astrophysics. 700, 14 p., A141.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
A low cosmic-ray ionisation rate in the pre-stellar core Ophiuchus/H-MM1: Mapping of the molecular ions ortho-H2D+, N2H+, and DCO+
Harju, J., Vastel, C., Sipilä, O., Redaelli, E., Caselli, P., Pineda, J. E., Belloche, A. & Wyrowski, F., Aug 2024, In: Astronomy and Astrophysics. 688, 15 p., A117.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Nuclear spin ratios of deuterated ammonia in prestellar cores: LAsMA observations of H-MM1 and Oph D
Harju, J., Pineda, J. E., Sipilä, O., Caselli, P., Belloche, A., Wyrowski, F., Riedel, W., Redaelli, E. & Vasyunin, A., Jan 2024, In: Astronomy and Astrophysics. 682, 19 p., A8.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile -
Toward a European Facility for Ground-Based Radar Observations of Near-Earth Objects
Pupillo, G., Righini, S., Orosei, R., Bortolotti, C., Maccaferri, G., Roma, M., Mastrogiuseppe, M., Pisanu, T., Schirru, L., Cicalò, S., Tripodo, A., Harju, J., Penttilä, A., Virkki, A. K., Bach, U., Kraus, A., Margheri, A., Ghiani, R., Iacolina, M. N. & Valente, G. & 3 others, , Jan 2024, In: Remote Sensing. 16, 1, 23 p., 38.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
Initial conditions of star formation at ≲2000 au: Physical structure and NH3 depletion of three early-stage cores
Lin, Y., Spezzano, S., Pineda, J. E., Harju, J., Schmiedeke, A., Jiao, S., Liu, H. B. & Caselli, P., 6 Dec 2023, In: Astronomy & Astrophysics. 680, 22 p., A43.Research output: Contribution to journal › Article › Scientific › peer-review
Open AccessFile
Projects
- 4 Finished
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NEO-RADAR: SSA P3-NEO-XXII NEO OBSERVATION CONCEPTS FOR RADAR SYSTEMS
Penttilä, A. (Project manager) & Harju, J. (Participant)
01/01/2020 → 01/12/2021
Project: Research project
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ERC Advanced Grant project SAEMPL (No. 320733)
Muinonen, K. (Project manager), Peltoniemi, J. (Participant), Penttilä, A. (Participant), Markkanen, J. (Participant), Zubko, E. (Participant), Pentikäinen, H. (Participant), Guirado Rodriguez, D. (Participant), Gritsevich, M. (Participant), Kassamakov, I. (Participant), Harju, J. (Participant), Pelkonen, V.-M. (Participant), Väisänen, T. (Participant), Martikainen, J. (Participant), Herranen, J. (Participant), Maconi, G. (Participant), Helander, P. (Participant) & Rantakylä, J. (Participant)
01/04/2013 → 31/03/2018
Project: Research project
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Initial stages of star formation -Research utilizing ESO's radio telescopes and advanced modelling
Harju, J. (Project manager), Miettinen, O. (Participant), Sipilä, O. (Participant), Haikala, L. (Participant) & Väisälä, M. (Participant)
01/01/2010 → 31/12/2013
Project: Research project
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Low-mass star formation in different environments - Research with high-precision radio telescopes from APEX to ALMA
Harju, J. (Project manager), Miettinen, O. (Participant), Sipilä, O. (Participant), Kontinen, S.-P. S. (Participant), Lehtinen, K. (Participant) & Liljeström, A. (Participant)
01/01/2007 → 31/12/2009
Project: Research project
Activities
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Max Planck Institut für extraterrestrische Physik
Harju, J. (Visiting researcher)
3 Jan 2017 → 30 Jun 2017Activity: Visiting an external institution types › Academic visit to other institution
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Max Planck Institut für extraterrestrische Physik
Harju, J. (Visiting researcher)
5 Jan 2016 → 30 Jun 2016Activity: Visiting an external institution types › Academic visit to other institution
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Space Research Advisory Committee (External organisation)
Harju, J. (Board member)
1 Jul 2016 → 30 Jun 2019Activity: Membership types › Membership or other role in national/international committee, council, board
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Max Planck Insititut für extraterrestrische Physik
Harju, J. (Visiting researcher)
1 Jan 2015 → 30 Jun 2015Activity: Visiting an external institution types › Academic visit to other institution
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I. Physikalisches Institut, Universität zu Köln
Harju, J. (Visiting researcher)
8 May 2013 → 10 May 2013Activity: Visiting an external institution types › Academic visit to other institution