Breaking the limits 2026

Super-Eddington accretion onto compact objects.

Sardinia, Italy, 22-26 June 2026

About this conference

Recent years have seen an increasing interest of the astronomical community on the topic of super-Eddington accretion on compact objects, which can apply to a variety of systems, such as supermassive black holes, black hole binaries, ULXs, neutron stars. Moreover, the possibility that the Eddington limit may be violated can have important implications for the related topics of black hole growth, galaxy evolution and AGN feedback. After the two successful editions in 2016 and 2018 and a long hiatus for… viral reasons, we reconvene to discuss the advancement done in the last eight years. This workshop will be an opportunity to compare recent observations with state-of-the-art theoretical modeling of super-Eddington flows, and to discuss the cosmological implications of this regime of accretion.


Scientific Organizing Committee

Matteo Bachetti (co-chair) - INAF Cagliari, Italy
Jane Dai - The University of Hong Kong (Hong Kong)
Stefanie Komossa (Max Planck Institute, Germany)
Alessandro Lupi - Insubria University (Italy)
Matt Middleton - University of Southampton (UK)
Ken Ohsuga - University of Tsukuba (Japan)
Ciro Pinto - INAF IASF Palermo (Italy)
Claudio Ricci - University of Geneva (Switzerland)
Raffaella Schneider - Sapienza University of Rome (Italy)
Francesco Tombesi (co-chair) - Tor Vergata University of Rome, Italy
Marta Volonteri - Institut de Astrophysique de Paris (France)

Local Organizing Committee

Matteo Bachetti (chair)
Tiziana Coiana
Eleonora Veronica Lai
Maura Pilia
Paolo Soletta

Sessions

The program will be divided into themes, covering around half/one day each. A discussion on the topics of the session will take place at the end of each session, coordinated by a moderator.

Invited speakers will be announced shortly

Super-Eddington Accretion Physics
Black hole growth and galaxy evolution
Active Galactic Nuclei and quasars
X-ray binaries and ULXs
Gamma-ray bursts and tidal disruption events
New and future observatories ...

Venue

The workshop will take place at Hotel Regina Margherita, in the lively center of Cagliari. The hotel will provide up to 40 rooms for participants at a fixed rate of 145€/night for single rooms and 87.5/person/night in double room, for reservations until Feb.15th. After that date, the number of available rooms will decrease. More information about registration, travel and accommodation can be found on the website. The secretariat of the workshop is managed by Kassiopea Group. For any organizational questions or room reservations, please contact Luisa Serra

Contacts

Organizing Secretariat

Kassiopea Group Srl
Via S. Tommaso D'Aquino 20 (Torre Verde)
09134 Cagliari
Italy
Tel.: +39 (0)70 651242
e-mail: info@kassiopeagroup.com
web: https://www.kassiopeagroup.com

LOC

To contact the LOC, please use
the following email address:
supereddington2026 dot oaca at inaf.it