Ecole Evry Schatzman 2022

The evolution of massive stars: final stages and extreme phenomena

(18-23 Sept. 2022, Aussois, France)

    We are sorry to inform you that the SOC has decided to cancel the Evry Schatzman summer school "Massive stars evolution: final stages and extreme phenomena".

   This yearly school aims at gathering young scientists working in the french community. Traditionally, about 30 to 50 participants take part to the event (see https://www.pnps.cnrs.fr/ees.html for the latest editions). This year, in spite of an extension of the registration deadline and of a number of reminders through various mailing lists and personal contacts, we did not manage to trigger the interest of more than 17 people. This is much less than what we expected. One of the goals of the school - creating professional links between various scientists working in the field - would not be fulfilled with such a small number of participants. In addition, the school requires a significant amount of work for the speakers, and we felt that this would be too much given the limited attendance.

  We thus decided to cancel the school.

  We apologize for the inconvenience this may cause you, and we hope to meet you in the near future.

Core collapse supernovae (CCSN) are the final state of the evolution of stars more massive than about 8 solar masses. Various types of CCSN exist. Observations have shown that the progenitors of type II CCSN are red supergiants with masses between 8 and 20  solar masses. However, there is so far no clear detection of the progenitor of a type Ib or Ic supernova. In addition, CCSN are sometimes associated with long-soft gamma-ray bursts. The relation between CCSN and GRB remains poorly understood, although metallicity seems to play a major role. The recent detection of heavy stellar black holes by the LIGO-VIRGO collaborations questions out understanding of the link between stellar evolution and compact objects.

New space and ground based observatories will soon come to play: E-ELT, JWST, SVOM, CTA. They will shed ligh on the final evolution of massive stars. Time is thus ripe to sumarize the knowledge and unknowns in this field.

The summer school will be divided as follows:

1. Massive stars evolution, from the main sequence to the pre-supernova stage (A. Palacios, LUPM)

2. Massive stars observational properties (P.A. Crowther, Sheffield)

3. CCSN / theory (J. Guilet, CEA)

4. CCSN / observations (S. Smartt, Beflast)

5. Gamma-ray bursts / theory (F. Daigne, IAP)

6. Gamma-ray bursts / observational constraints (D. Perley, Liverpool)

7. Compact objects (N. Webb, IRAP)

A seminar on gravitational waves will be given by M. Branchesi (Gran Sasso) and a practical session on stellar evolution with the code MESA will also be scheduled.

The school is limited to 40 participants.

SOC: F. Martins (chair, LUPM), C. Reylé (UTINAM), J.C. Bouret (LAM), S. Vergani (GEPI),  A. Lamberts (LAGRANGE)