Workshop on Astrophysics and Relativity: Astro-GR 2015


Start time: August 11, 2015

Ends on:  August 15, 2015

Location: São Paulo, Brazil



  • Pau Amaro-Seoane (MPI – Potsdam)
  • José de Freitas Pacheco (Observatoire de la Cote d´Azur)
  • Riccardo Sturani (IFT-UNESP / ICTP-SAIFR)

Confirmed speakers:

The goal of the workshop is to address crucial questions in the field, as well as to build new collaborative relationships – and strengthening existing ones – focused on the interpretation of gravitational wave (GW) observations using electromagnetic astrophysics as a tool of astronomical discovery and a probe of the fundamental physics of gravity. The new information  obtained from current or future electromagnetic and GW observations provides an opportunity to challenge and refine theoretical models of the growth of massive black holes and the environments in galactic nuclei and other dense clusters. Refinements in these models will have direct consequences for the expected science that can be done with GW observatories. This workshop will tie observations and theoretical models to future gravitational-wave and electromagnetic observations.

The workshop will address the following subjects:

1. Astrophysical environments which allow black holes to form, grow, collide, and merge, the determination of their electromagnetic counterparts for multi-messenger astrophysics covering electromagnetic and gravitational radiation.

2. Dynamics of galactic nuclei: Impact on massive black hole growth and distribution of stars around them, creation of X-ray/UV flares by stellar tidal disruptions and formation of gravitational wave sources, for ground and space-borne detectors.

3. The formation of intermediate-mass black holes in globular clusters and the interplay with the stellar environment: ultra-luminous X-ray sources (ULRX), capture of compact objects by the IMBH, “intermediate-mass ratio inspirals” (IMRIs), and the creation of IMBH binaries as a powerful source of GWs for ground- and space-borne detectors.

4. Gravitational wave detections from ground-based  observatories will open a new window on the astrophysics of binary systems containing black hole from a few to a few hundred solar masses. Waveform modelling is sufficiently accurate to enable the reconstruction of the precessional dynamics allowing to determine, for instance, if tidal interactions or mass ratio reversal play a role in binary system formation.

The School on Gravitational Waves: from data to theory and back precedes this workshop. Candidates may apply either for one or both activities.

In order to have an idea of the former workshops, please visit the home-page Astro-GR: the original idea of the meetings



 List of Participants: Updated on July 30


Workshop Program:


List of Questions for ASTRO-GR


Additional Information:

Registration: ALL participants should register. The registration will be on August 11 at the institute from 12:45 to 14:00. You can find arrival instruction at

BOARDING PASS: All participants, whose travel has been provided or will be reimbursed by the institute, should bring the boarding pass upon registration, and collect an envelope to send the return boarding pass to the institute.

Accommodation: Participants whose accommodation has been provided by the institute will stay at The Universe Flat. Each participant whose accommodation has been provided by the institute has received the details on the accommodation individually by email.

Emergency number: 9 8233 8671 (from São Paulo city); +55 11 9 8233 8671 (from abroad), 11 9 8233 8671 (from outside São Paulo).

Ground transportation instructions: 

Ground transportation from Guarulhos Airport to The Universe Flat

Ground transportation from Congonhas Airport to the Universe Flat

Ground transportation from The Universe Flat to the institute