Symposium S11  25 – 26 June 2015

Neutron stars at the crossroads:
X-ray binaries and transitional millisecond pulsars

2015-04-17: See our detailed program!
2014-12-04: Download the poster (credit: G. Pérez-Díaz/IAC)

Aims and scope

We have witnessed in the last five years the convergence of two fields of astrophysics born half a century ago: the study of neutron stars powered by their rotational energy, and the study of accreting compact objects in X-ray binaries. Recent discoveries have confirmed the evolutionary link between millisecond radio pulsars (MRPs) and low-mass X-ray binaries (LMXBs), and have opened a new era where the "metamorphosis" of a neutron star from a rotation- to an accretion-powered state (and vice versa) can be directly observed.

This EWASS 2015 symposium will gather researchers from the fields of neutron stars, accretion physics, radio pulsars and X-ray binaries in order to discuss and compare the properties of MRPs and LMXBs, with a special focus on transitional millisecond pulsars and quiescent LMXBs. We can now explore the impact of these new discoveries on binary, magnetic field and spin evolution, as well as study the interaction between accretion flows, neutron star magnetospheres and pulsar winds in regimes never accessible before.


  • Accreting millisecond X-ray pulsars. Neutron star transients between outburst and quiescence. Underluminous accretion flows. (Chair: Bozzo)
  • Gamma-ray observations of isolated and transitional pulsars. Models for gamma-ray emission. (Chair: Papitto)
  • Optical studies of compact object binaries: X-ray binaries and binary millisecond pulsars. Neutron star mass measurements. Dynamical measurements and light curve modelling. (Chair: Casares)
  • Radio timing properties of millisecond pulsars. Redback and black widow pulsars. Spin and orbital parameters. Radio "eclipses". (Chair: Ferrigno)
  • Disk-magnetosphere interaction. Pulsar wind shocks. Three states of redback millisecond pulsars with a varying spectral energy distribution. (Chair: De Martino)
  • Binary evolution; millisecond pulsar formation; neutron star recycling. Double neutron star mergers and gravitational wave prospects. (Chair: Breton)
  • Outlook: neutron stars and transitional pulsars with present and future facilities. Observational and theoretical challenges. (Chair: Linares)

  • Instructions for speakers:
    time = talk + questions (minutes):
    30 = 25 + 5
    25 = 20 + 5
    15 = 12 + 3
    10 = 8 + 2
    Please ensure you allow the above times for questions and answers when preparing your presentation.

    Instructions for posters:
    The maximum dimensions of the posters should be 0.84m (33 inch) x 1.20m (47 inch) (width x height, orientation portrait), equivalent to A0 size. Authors are kindly requested to have a signage at the top of their poster with the full title, the names of authors and co-authors, as well as the institutes they work for.

    We received a large number of very interesting abstracts, more than we could accommodate as talks in the limited time available. We would like to thank everyone for their interest, and we hope to see you all in Tenerife!

Invited speakers
D. Chakrabarty (MIT)
J. Hessels (ASTRON)
R. Romani (Stanford)
M. Romanova (Cornell)
T. Tauris (Bonn)
D. Torres (IEEC-CSIC)
R. Wijnands (Amsterdam)

Solicited speakers
A. Archibald (ASTRON)
R. Breton (Manchester)
C. D'Angelo (Leiden)
S. Oslowski (MPI-FR)
A. Patruno (Leiden)
M. Roberts (NYU-AD)
T. Tam (NTHU)
M. Tavani (INAF-IAPS)

Scientific organisers
C. Ferrigno (Chair; ISDC)
M. Linares (Chair; IAC)
S. Bogdanov (Columbia)
E. Bozzo (ISDC)
J. Casares (IAC)
D. de Martino (INAF-OACN)
A. Papitto (IEEC-CSIC)
B. Stappers (Manchester)


Linares @

Updated on Tue Aug 25 11:25:04 CEST 2015