November 16, 2017

Astro-GR@Barcelona 2018

The First Tal Alexander Meeting on Extreme (and Intermediate-) Mass Ratio Inspirals

Tal Alexander has been one of the best scientists on the field, and his contribution beyond description. Without his science, we would not have made it so far in the problem of extreme-mass ratio inspirals and stellar dynamics in general. Besides being a great scientist, he was a cultivated, intelligent, receptive human being in the full meaning of these two words, and one of my best friends. From now, all Astro-GR meetings focusing on EMRIs will be named after Tal to honour him. Because I want to do it, and because he deserves it.



from the capture of compact objects by massive black holes.

Organised by Pau Amaro-Seoane and Carlos F. Sopuerta in Barcelona, at the ICE (CSIC-IEEC) from Tue 4 – Thu 6 September 2018.

Copyright Alejandra Lezcano


The Laser Interferometer Space Antenna (LISA) is the future ESA-NASA Gravitational Wave Observatory. It will look for GW signals in the low-frequency band (0.1 mHz – 1 Hz), mainly from the following sources: galactic binaries, the coalescence and merger of massive black holes in galaxies at cosmological distances, the capture and inspiral of stellar compact objects into massive black holes at galactic centers and even from cosmological stochastic backgrounds.

These observations promise to open a completely new window to the exploration of the Universe, which is expected will have important consequences for our knowledge in astrophysics, cosmology, and fundamental physics. This edition of the Astro-GR meetings will focus again (like the first meeting in the series) on the third source above, (iii), which due to the mass ratio of these binaries they are commonly known as Extreme-Mass-Ratio Inspirals (EMRIs). Considering the possible existence of intermediate-mass black holes, an additional source of gravitational waves for LISA will the inspiral of stellar-mass compact objects into an IMBH or the inspiral of an IMBH into a MBH. These sources, again due to the mass ratio of the binaries, are known as an intermediate-mass ratio inspirals (IMRIs).

Copyright Alejandra Lezcano

Copyright Alejandra Lezcano


We will have short presentations from the participants and everything will be run in a very informal way. The main goal is to discuss the science but also the strategy to follow in the next year(s) related to all aspects of EMRIs. The discussions will be connected to the work by the Data Analysis Group, in particular to waveform modelling, detection and parameter estimation, multi-band GW analysis and the analysis of I/EMRI populations.


Pau Amaro Seoane, Carlos F. Sopuerta, Ben Bar-Or, Alessandro Spallicci, Barry Wardell, Leor Barack, Niels Warburton, Adam Pound, Nathan Leigh, Misao Sasaki,
Ian Vega, Sarp Akcay, Feng Xuefeng, Alejandro Torres Orjuela, Kostas Kokkotas, Neil Cornish, Alvin Chua, Huan Yang, Andrea Derdzinski, Han Wenbiao, Maarten van de Meent, Pedro Capelo, Marc Freitag, Xian Chen, Angela Gardini, Jongsuk Hong, Marius Oltean


Please check this pdf.

Copyright Alejandra Lezcano

Copyright Alejandra Lezcano

We acknowledge support from COST (European Cooperation in Science and Technology) Action CA16104 GWverse.