Keele Astrophysics Group

Seminar Programme


The seminars are on Wednesdays at 4.00 p.m. in the Lennard-Jones lecture hall (LJ1.75) and sometimes in the LJ Library (LJ1.25). All welcome.

Click here for directions.


2016/17 Programme

  • 22 March 2017 (Room LJ1.01)

    Valentina Braito (Brera Observatory): Mapping AGN winds and circumnuclear absorbers fron the smallest to the largest scales

    While X-ray observations of Active Galactic Nuclei have provided the evidence for the presence of fast outflowing winds launched from near the central massive black hole, we are now just starting to build a more complete picture of winds on all scales from the smallest (hundreds of gravitational radii) to the largest scales (pc or kpc scales). X-ray winds are important toward our understanding of the innermost region of AGN as well as their impact on the host galaxies on large scales. Indeed the so-called ultra fast winds may carry significant kinetic power that can ultimately affect the host galaxy, providing the necessary feedback that regulates the growth of the central SMBH and the galaxy bulge. Here, I review our recent observational results obtained for the prototype of these powerful winds, PDS 456, where the imprint of the wind is seen both in the iron K band as well as in the soft X-rays. On the other hand the slower winds, coincident pc to kpc scale gas, are also crucial as they could be a later stage of a fast nuclear wind that is propagating outwards on larger scales. I will also review our recent results on the larger scale absorbers that comes from the analysis of high spectral and spatial resolution X-ray data, where both ionised absorption and emission lines from different elements (from C up to S) are seen.


  • 3 May 2017

    Isabelle Baraffe (University of Exeter): TBA


  • 10 May 2017

    John Beckman (IAC Tenerife): TBA


  • 24 May 2017

    Emily Brunsden (York University): Spectroscopic Mode Identification of Gamma Doradus Stars


  • 7 June 2017

    TBA



  • If you would like to give a talk in our seminar programme, please contact Nick Wright (n.j.wright AT keele.ac.uk).


Past seminars (2016/17)

  • 12 October 2016, 4pm, room LJ 1.75
    Giovanni Rosotti
    University of Cambridge
    Studying planet formation in the era of ALMA

  • 26 October 2016, 4pm, room LJ 1.75
    Saida Caballero-Nieves
    Sheffield University
    A Binary View of Massive Stars

  • 9 November 2016, 4pm, room LJ 1.75
    Jose Groh
    Trinity College Dublin
    The surprising look of massive stars before death

  • 23 November 2016, 4pm, room LJ 1.75
    Katharine Johnston
    Leeds University
    Accretion disks around massive stars: the revolution with ALMA

  • 7 December 2016, 4pm, room LJ 1.75
    Chris Copperwheat
    Liverpool John Moores University
    The Large Robotic Telescope: a facility for the new era of time domain astronomy

  • 25 January 2017,11am, room LJ 1.25
    Fabian Schneider
    Oxford University
    Magnetic Massive Stars

  • 1 February 2017, 4pm, room LJ 1.75
    Dirk Froebrich
    Kent University
    Investigations of Star Formation with the UKIRT Widefield Infrared Survey for H2

  • 15 February 2017, 4pm, room LJ 1.75
    Bernhard Mueller
    Queen's University Belfast
    Understanding the Explosions of Massive Stars