Matteo Breschi

Matteo Breschi

Gravitational-wave data analysis

Bajes v0.3.0 is available on PyPI

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The latest bajes version (0.3.0) is available on PyPI. You can install the bajes package simply using pipwith the command pip install bajes. Alternatively, you can fork the source code from the GitHub repository.

The new version includes a built-in interface with JenpyROQ approximation, in order to speed-up likelihood evaluations.

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GGI school on Theoretical aspects of astroparticle physics, cosmology and gravitation

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Astroparticle Physics, Cosmology and Gravitation are nowadays very active areas of research. The School aims at providing robust and detailed introductions on the basic theoretical concepts and tools needed for performing research in these fields. Gravitational waves of astrophysical and cosmological origin, neutrino physics and astronomy, dark matter and dark energy, galactic and extra-galactic cosmic rays and gamma-rays will be some among the main topics. The lecturers are selected among the best experts of our international communities.

Reinterpreting GW190521 as an hyperbolic capture

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One of the most enigmatic and interesting gravitational signals observed by LIGO and Virgo to date, GW190521, may have been generated by the violent collision of two black holes orbiting in an extremely dense and crowded galactic environment just before the merger.

The first ET annual meeting at EGO

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“The ET annual meeting is the 1st event involving the whole ET collaboration after its formal foundation, in June 2022; it is worth to note that in these few months the ET collaboration has grown-up passing the 1300 members – said the ET collaboration spokesperson, Michele Punturo – The ET annual meeting is a pivotal occasion to discuss the recent achievements and to prepare the next steps in the design of the ET observatory, in defining ET science and in setting-up the ET organization.”

First observations of mixed binaries

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The Virgo, LIGO and KAGRA scientific collaborations today announced the first observation ever of binary systems consisting of a neutron star and a black hole. This was made possible by the detection, in January 2020, of gravitational signals (nicknamed GW200105 and GW200115 from the dates of their detection) emitted by two systems, in which a black hole and a neutron star, rotating around each other, merged into a single compact object. The existence of these systems was predicted by astronomers several decades ago, but they had never been observed with confidence, either through electromagnetic or gravitational signals, until now.