HiGH-ENERGY Accretion workinG group

Accretion is one of the most powerful processes in the universe, transferring gravitational energy into heat and radiation. Accretion allows us to observer otherwise invisible objects, like black holes, which emit enormous amounts of X-rays when matter becomes trapped in their potential well. Super-massive black holes at the center of other galaxies can become so powerful, that they outshine the rest of the galaxy, as well as strongly influence their evolution. Accretion also plays an important role in star formation and the early beginnings of planetary systems like ours.

ESA's satellites study accretion physics over a broad range of wavelengths, from infrared to optical, and in particular using X-rays detected by XMM-Newton and INTEGRAL.

The accretion working group is a new addition to the broad portfolio of science performed at ESAC. Our main focus is accretion onto stellar mass neutron stars and black holes in our own Galaxies (X-ray binaries), as well as accretion onto super-massive black holes at the center of other galaxies (Active Galactic Nuclei). We meet about 2x a month for a discussion of recent developments in the field as well as to help each other with problems we might encounter during data analysis and interpretation.


Aitor Ibarra Ibaibarriaga (ESAC)
Beatriz Agís González (CAB)
Bruno Altieri (ESAC)
Celia Sanchez Fernandez (ESAC)
Eleni Kalfountzou (RF, ESAC)
Erik Kuulkers (ESTEC)
Felix Fuerst (RF, ESAC)
Gabi Matzeu (RF, ESAC)
Guillaume Belanger (ESAC)
Giovanni Minutti (CAB)
Ignacio de la Calle Perez (ESAC)
Jacobo Ebero Carrero (ESAC)
Julia Alfonso Garzón (CAB)
Jan-Uwe Ness (ESAC)
Lucia Ballo (ESAC)
Laura Tomas Calderon (ESAC)
Maria Santos Lleo (ESAC)
Marion Sanfrutos (CAB)
Matteo Guainazzi (ESTEC)
Matthias Ehle (ESAC)
Miguel Mas Hesse (CAB)
Michael Parker (RF, ESAC)
Nora Loiseau Lazarte (ESAC)
Norbert Schartel (ESAC)
Peter Kretschmar (ESAC)
Pedro Rodriguez Pascual (ESAC)
Richard Saxton (ESAC)
Rosario Gonzalez Riestra (ESAC)
Simone Migliari (ESAC)
Victoria Grinberg (ESTEC)

For any further information, please contact Felix Fuerst.