Growing Black Holes: Accretion and mergers, 19-24 April 2020, is the seventh in a series of astrophysical conferences held in Kathmandu (Nepal). The meeting will focus on various aspects on accretion onto black holes, mergers of compact objects forming black holes, and jets formed in those systems. Emission of those systems/events in electromagnetic radiation, gravitational waves and neutrinos will be also addressed.

This conference will be in memory of Sergio Colafrancesco.
Sergio has been among the conference organizers for most of the previous conference editions. He was an internationally recognized scientist, expert in cosmology and astrophysics and a Nepal lover.

Main Topics

  • Black holes of all masses
  • Compact object mergers at all scales (stellar mass & supermassive), EM and GW signatures.
  • Physics of accretion, disc winds and jets – Galactic systems, IMBHs, and AGN
  • Stellar tidal disruption events (TDEs)
  • Large-scale feedback: jets and outflows
  • Galaxy – BH scaling relations
  • Collapsars: black hole formation and GRBs
  • Multimessenger astrophysics
  • Mission Highlights and upcoming missions

Important Deadlines

    • 1st January 2020
      • registration
      • abstract submission
    • 1st March 2020
      • reservation at the Radisson Hotel at a discounted rate

Conference Site

The conference will be held at the five star Hotel Radisson in Kathmandu, Nepal. The hotel is close to the Royal Palace and within walking distance to the center of the city.

Conference Fee

The conference fee will be 350 EUR (including lunches, coffee breaks, welcome reception and conference banquet, use of the hotel conference facilities and a sightseeing) if registered before the deadline of 2020.01.01. After that, late registration will only be possible, if any space is left. The fee then is 400 EUR. We strongly encourage early registration and flight booking.
A reduced fee of 250 EUR is foreseen for Indian/SAARC scientists and a further reduced fee of 200 EUR is foreseen for students (PhD, master degrees).


There will be one sightseeing tour in the afternoons during the conference week. The tour plus entrance fees are included in the registration fee.
In addition, there may be the possibility of an early-morning, one-hour mountain flight with amazing views of the Himalayas including Mt. Everest. The cost will around 200-250 USD. In case of bad weather the flight will be rescheduled or the price refunded. This is not included in the conference fee, and is externally organized. More information will be distributed later.


There may be the option of post-conference trips, including a few days trekking to Namche Bazar with Everest views, and a one-week excursion to Bhutan. These are not part of the conference, but will be organized by external trekking agencies. More information will be released soon.

Scientific Organizing Committee
G. Beck (South Africa), K. Belczynski (Poland), M. Branchesi (Italy), M. Colpi (Italy), M. Elvis (US), A. Gopakumar (India), K. Holley-Bockelmann (US), A. Ingram (UK), S. Komossa (chair; Germany), J.-P. Lasota (France), R. Morganti (Netherlands), C. Mundell (UK), E. Palazzi (Italy), E. Pian (Italy), L. Piro (Italy), L. Rezzolla (Germany), G. Sivakoff (Canada), A. Tchekhovskoy (US), M. Trenti (Australia), A. Veledina (Finland), A. Zdziarski (Poland), S.-N. Zhang (China)

Local Organizing Committee
S. Komossa (Bonn, Germany), E. Palazzi (INAF/OAS-Bologna, Italy), M. Trenti (Melbourne Univ., Australia), A. Zdziarski (chair, NCAC, Poland), ………………….