Research

© 2026 Observatoire Astronomique de Strasbourg | Webdesign et développement Alchimy.

A broad range of research topics are studied by the researchers of the Strasbourg astronomical Observatory: stellar physics, compact objects and black holes, and their extreme environment, the interstellar medium, nearby galaxies, including the Milky Way, the evolution of galaxies, and the cosmology and reionisation of the Universe.

Research teams

ObAS publications

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    Journal articles

    2026

    ref_biblio
    A.G Abac, I Abouelfettouh, F Acernese, K Ackley, C Adamcewicz, et al.. All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA Observing run. Phys.Rev.D, 2026, ⟨10.1103/83j3-pgk1⟩. ⟨hal-05491504⟩
    Accès au bibtex
    https://arxiv.org/pdf/2507.12282 BibTex
    ref_biblio
    A.G Abac, I Abouelfettouh, F Acernese, K Ackley, C Adamcewicz, et al.. Black Hole Spectroscopy and Tests of General Relativity with GW250114. Phys.Rev.Lett., 2026, 136 (4), pp.041403. ⟨10.1103/6c61-fm1n⟩. ⟨hal-05491429⟩
    Accès au bibtex
    https://arxiv.org/pdf/2509.08099 BibTex
    ref_biblio
    B. Agís-González, D. Hutsemékers, I. Liodakis, S. Cazzoli, D. Sluse, et al.. Polarization echoes from past nuclear activity in the quasi-periodic eruption source GSN 069. Astronomy & Astrophysics - A&A, 2026, 705, pp.L13. ⟨10.1051/0004-6361/202557342⟩. ⟨insu-05479935⟩
    Accès au texte intégral et bibtex
    https://insu.hal.science/insu-05479935/file/aa57342-25.pdf BibTex
    ref_biblio
    Andreas Bauswein, Aristeidis Nikolaidis, Georgios Lioutas, Hristijan Kochankovski, Prasanta Char, et al.. Stellar properties indicating the presence of hyperons in neutron stars. Phys.Rev.Res., 2026, ⟨10.1103/ygtr-ktqk⟩. ⟨hal-05191608⟩
    Accès au bibtex
    https://arxiv.org/pdf/2507.10372 BibTex
    ref_biblio
    J.M Diego, G. Congedo, R. Gavazzi, T. Schrabback, H. Atek, et al.. Euclid: Early Release Observations. A combined strong and weak lensing solution for Abell 2390 beyond its virial radius. Astron.Astrophys., 2026, 706, pp.A83. ⟨10.1051/0004-6361/202556372⟩. ⟨hal-05191078⟩
    Accès au bibtex
    https://arxiv.org/pdf/2507.08545 BibTex