Scientific Rationale

These six images represent the potential for new images and discoveries housed in the Chandra Data Archive. To celebrate October as American Archive Month, these images - which include supernova remnants, pulsars, black holes, and clusters of galaxies - are being released. Each image represents data that are available to both the professional scientific community as well as the general public.
Optical/X-ray image of SN 1987A

SN 1987A, the closest SN event witnessed since the invention of the telescope, has been observed in its entire electromagnetic spectrum, and this wealth of multi-wavelength and multi-messenger information collected in the course of 30 years of investigation, including the unique detection of MeV neutrinos associated with a core-collapse SN, has thus provided much insight into SNe. SN 1987A thus became the first case enabling to make the link between the advanced knowledge of all these fundamental topics in modern astrophysics.

At the occasion of the 30th anniversary of this unique event, this IAU Symposium 331 in La Réunion Island aims at bringing the core-collapse SN and SNR communities together, making the link between the stellar progenitors and the multi-wavelength/-messenger manifestation of their aftermaths in terms of extreme sources of high-energy particles and nuclei. By bringing together theorists, observers and instrumentalists from diverse geographical regions and fields of expertise, making focus on the best studied case, the Symposium will span a broad spectrum of important, interconnected, topics within this rapidly evolving research field of SNe and SNRs.


This meeting provides a timely platform for:

  1. gathering our accumulating knowledge of these explosive events and their remnants, in particular on the following topics:
    • Latest evolutionary stages of massive stars
    • Stellar progenitors and diversity in core-collapse SNe
    • SN 1987A, thirty years later
    • Explosion mechanisms and nucleosynthesis
    • Particle acceleration and origin of cosmic rays
    • Multi-wavelength/multi-messenger data on core-collapse SNe and their remnants
  2. shedding light on the still open questions through an interdisciplinary approach,
  3. paving the way for the exploitation of future multi-wavelength/-messenger facilities (the Square Kilometer Array (SKA), the Large Synoptic Survey Telescope (LSST), the Athena X-ray Observatory, the Cherenkov Telescope Array (CTA), and the upcoming neutrino [KM3NeT, IceCube-Gen2] and Gravitational-Wave experiments), and
  4. promoting astronomy through school and public lectures, exhibitions, and stargazing sessions at Les Makes Observatory focused on the wonders of the Southern Hemisphere.