People

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Dr. Marco Drago
Phone:+49 511 762-17036Fax:+49 511 762-17182
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Dr. Francesco Salemi
Phone:+49 511 762-17138Fax:+49 511 762-2784

Gravitational-wave Bursts

Burst Searches

The gravitational-wave (GW) bursts searches are generic “all-purpose” searches targeting all kinds of fast GW transients, i.e., up to a few seconds duration. As they do not rely on an accurate knowledge of the signal waveforms, burst searches are complementary to matched filter searches and allow for an “eyes-wide-open” approach towards a wide variety of potential GW emitters.

In fact, among the sources for burst-like GW signals, some are relatively well known, both in terms of astrophysical observations and modeling, like the merging of black holes and/or neutron stars, but in most cases the energetics and/or waveforms are highly uncertain. These include neutron star collapses, core collapse supernovae, star-quakes associated with magnetar flares, pulsar glitches, etc. Moreover, as we are about to open a new window of astrophysical observation, it's crucial to be ready for yet unknown and unanticipated sources.

The main focus of our group is on searches which scan continuously the entire sky looking for coherent transients over the network of GW detectors: the so called “all-sky (and all-time) burst searches”. This is the most general search for transient GW signals, and it acts as a starting point for more specific searches.

Within this framework, a lot of work has been devoted to the application of un-modeled burst searches to massive binary mergers.

The group is also strongly involved in the development and implementation of new methodologies and algorithms for the advanced GW detectors.

Our group works on different aspects described above, e.g.:

  • all-sky un-triggered burst searches
  • searches for intermediate mass black hole binary coalescences 
  • methodology and algorithms for future advanced GW detectors
 
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