Dr. Badri Krishnan
Group leader
Phone:+49 511 762-17134Fax:+49 511 762-2784
Dr. Ofek Birnholtz
Phone:+49 511 762-17016Fax:+49 511 762-2784
Miriam Cabero Müller
Phone:+49 511 762-5702Fax:+49 511 762-2784
Tito Dal Canton
Phone:+49 511 762-17019Fax:+49 511 762-2784
Dr. Collin Capano
Phone:+49 511 762-17097Fax:+49 511 762-2784
Dr. Thomas Dent
Phone:+49 511 762-17173Fax:+49 511 762-2784
Franz Harke
Nathaniel Indik
Phone:+49 511 762-17103Fax:+49 511 762-2784
Dr. Andrew Lundgren
Phone:+49 511 762-17004Fax:+49 511 762-2784
Dr. Alex Nielsen
Phone:+49 511 762-19465Fax:+49 511 762-2784

Alex Nielsen's homepage

Dr. Alex Nitz
Phone:+49 511 762-17097Fax:+49 511 762-2784
Dr. Andrey Shoom
Julian Westerweck
Phone:+49 511 762-17090Fax:+49 511 762-2784

Compact Binary Coalescence

Compact Binary Coalescence Searches

The research of the compact binary coalescence (CBC) group is concerned with gravitational waves from binary systems consisting of compact objects (black holes and/or neutron stars) in a compact orbit around each other.

The activities of the group are closely connected with the analysis of data from the LIGO, Virgo and GEO600 detectors. The research interests of the group ranges from observational searches of data from these detectors, developing new analysis methods and software, understanding and extending the gravitational wave signal models, and theoretical aspects of black hole physics relevant to such binary systems.

The LIGO detectors have been upgraded to their advanced configurations. Their first observation run “O1” began on Sep 18, 2015 and lasted until Jan 12, 2015. This upgrade led to the first direct detection. As expected the first detection was a CBC signal. The key goal for CBC group at AEI will therefore be to make major contributions to detecting and understanding signals from other new systems.

Our group contributes to various projects, aiming at the gravitational-wave detection and characterization of compact binary coalescences. These projects include:

  • Searching for binary black hole coalescences using the inspiral, merger and ringdown phases
  • Porting existing CBC search codes and developing new search codes for General Purpose Computation on Graphics Processing Unit
  • Detector characterization to improve the understanding of detector glitches mimicking CBC signals
  • Improving the theoretical framework of CBC searches, e.g. via calculations of a parameter space metric, faster significance estimates, and the inclusion of spin and precession effects
  • Theoretical work on black holes
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