IAU Symposium 346: High-mass X-ray binaries:
illuminating the passage from massive binaries
to merging compact objects

August 27 – 31, 2018

Scientific Rationale:

Recent observational and theoretical advances led to an extremely rapid progress in the research on high-mass X-ray binaries (HMXBs). Consisting of a young massive donor star and an accreting degenerate object (a neutron star or a black hole), these objects provide unique astrophysical laboratories for studies of stellar evolution, donor star winds and disks, and compact objects they feed. HMXBs are among our cosmic neighbors and hence allow deep and detailed insights into the physics of stellar winds, accretion and matter under extreme conditions. HMXBs are also present in the farther realms, and are important sources of stellar feedback across cosmic times. As the key transitional stage between young massive stars and degenerate binaries, HMXBs are put in the focus of current astrophysical research by the revolutionary detection of gravitational waves from merging stellar-mass black holes. The Symposium will bring together a broad range of scientists with the aim to share their insights and further advance our understanding of HMXBs. New powerful synergetic approaches in studies of HMXBs will be developed and put in a broad astrophysical context during the XXX IAU General Assembly. The IAUS346 will build a bridge between mature field of massive binary astrophysics and nascent field of gravitational wave astronomy. This international meeting will consolidate our knowledge on massive stars, binary evolution, accretion physics, compact objects and gravitational wave sources to give us a new perspective on the cosmos illuminated by HMXBs.


  • Massive stars and their winds at present and across cosmic times 
  • Massive binary formation, evolution, and populations in the field and in dense star clusters 
  • Fast rotating massive stars and the Be phenomenon in binaries 
  • End points of massive star lives and the post-collapse binary properties 
  • HMXB formation and populations at different metallicities and in the early Universe 
  • Various classes of HMXBs: orbits, component masses, accretion regimes, luminosities 
  • Massive donor stars and accretion onto compact objects: X-ray and gamma-ray irradiation 
  • Accretion physics, including in the presence of strong magnetic fields 
  • From HMXBs to double degenerates: formation channels and evolution 
  • The cosmic influence of massive binaries and HMXBs 
  • Towards a unified picture of massive binaries, HMXBs, and gravitational wave sources




Abstract list for IAUS346
Poster list for IAUS346

Monday, 27. Aug.

Plenary Session
Lecture Hall A
08:30 - I. Mandel (Gravitational wave astronomy.)
09:00 - Heger, Alexander (Massive stars.)
09:30 - van den Heuvel, Edward (High-Mass X-ray Binaries.)


Tuesday, 28. Aug.

Massive stars
room: B
10:30 - Sander, Andreas (Massive star winds and HMXB donors)
11:00 - Martínez-Núñez, Silvia (Our current picture of the physics of wind-fed massive X-ray binary systems)
11:15 - J. Kritcka (Wind inhibition in HMXBs: the effect of clumping and implications for X-ray luminosity)
11:30 - EL MELLAH, Ileyk (Clumpy wind accretion in Supergiant X-ray Binaries)
11:45 - Hainich, Rainer (Massive binary stars with relativistic companions: Studying donor winds with the HST)

room: B
13:30 - Rivinius, Thomas (Be stars)
14:00 - Okazaki, Atsuo (Cyclic evolution of misaligned Be disks in Be/X-ray binaries and its observational implications)
14:15 - Bartlett, Elizabeth (CI Camelopardalis: The first sgB[e]-High Mass X-ray Binary Revisited Twenty Years on)
14:30 - Waisberg, Idel (Optical Interferometry of HMXBs: Resolving Wind, Disk and Jet Ouflows at Sub-milliarcsecond Scale)
14:45 - Ribó, Marc (MWC 656: the first HMXB containing a BH orbiting a Be star)


Wednesday, 29. Aug.

Gravitational Wave Progenitors
room: B
10:30 - Belczynski, Krzysztof (Evolutionary scenarios for the formation of gravitational wave progenitors)
11:00 - Mapelli, Michela (Black hole and neutron star binaries in star clusters and GW progenitors)
11:30 - Garofali, Kristen (Using High-Mass X-ray Binaries to Probe Massive Binary Evolution)
11:45 - Vink, Jorick (Constraining the progenitor evolution of GW 150914)

room: B
13:30 - J. Wilms (Mechanisms of accretion)
14:00 - Chaty, Sylvain (The dark side of HMXBs)
14:15 - Corbet, Robin (Long-term Properties of Superorbital Periodic Modulation in Wind-Accretion High-Mass X-ray Binaries)
14:30 - Negueruela, Ignacio (On the nature of SFXTs)
14:45 - Grinberg, Victoria (Clumpy accretion in high mass X-ray binaries: the showcase Vela X-1)


Thursday, 30. Aug.

X-ray luminosity functions and star formation
room: B
08:30 - M. Gilfanov (Populations of HMXBs in galaxies and links with star formation)
09:00 - Zezas, Andreas (Characterization of compact object populations in nearby galaxies)
09:15 - Fornasini, Francesca (Is the redshift evolution of HMXBs driven by metallicity?)
09:30 - Schulz, Norbert (The Very Young Be-Star X-ray Binary Circinus X-1)
09:45 - Wolter, Anna (The Cartwheel galaxy as a stepping stone for binaries’ formation)

High Energy and Early Universe
room: B
10:30 - C. Wilson-Hodge (HMXBs in gamma-rays and EM coun- terparts of GW events)
11:00 - Sidoli, Lara (Investigating High Mass X-ray Binaries at hard X-rays with INTEGRAL)
11:15 - Zhang, Shu (Multi messengers to gamma-ray XRB)
11:30 - Mirabel, Felix (HMXBs in the early Universe)

room: B
13:30 - Harrison, Fiona (Ultraluminous X-ray sources)
14:00 - Fuerst, Felix (Orbital period and pulsed spectrum of the super-Eddington neutron star NGC 7793 P13)
14:15 - Carpano, Stefania (Phase connected X-ray light curve and He II radial velocity measurements of NGC 300 X-1)
14:30 - Soria, Roberto (An eclipsing Wolf-Rayet ULX in the Circinus galaxy)
14:45 - Heida, Marianne (The donor stars of ultraluminous X-ray sources)


Friday, 31. Aug.

Populations in galaxies
room: B
08:30 - Haberl, Frank (opulations of HMXBs in the Milky Way and the Magellanic Clouds)
09:00 - Lehmer, Bret (Empirical Constraints on the Evolution of X-ray Binaries from Chandra Deep Fields and Local Galaxies)
09:15 - Bozzo, Enrico (IGR J17329-2731: the birth of a symbiotic X-ray binary)
09:30 - Shenar, Tomer (WR binaries in the Magellanic Clouds as progenitors of high mass X-ray binaries)
09:45 - Postnov, Konstantin (X-ray binaries with neutron stars at accreting and non-accreting stages)

HMXB and LMXB evolution and feedback
room: B
10:30 - Fragos, Tassos (ow-mass X-ray binaries and the way to GW sources)
11:00 - Klencki, Jakub (High-mass X-ray binaries as progenitors of gravitational wave sources)
11:15 - Marchant, Pablo (A new approach to binary population synthesis)
11:30 - QIN, Ying (The black hole spin in coalescing binary black holes and high-mass X-ray binaries)
11:45 - Torrejon, Jose Miguel (Accreting magnetars: stellar winds and accretion)

HMXB evolution and links with GW sources
room: B
13:30 - Chruslinska, Martyna (Local merger rates of double neutron star systems)
13:45 - Bulik, Tomasz (HMXBs as progenitors of gravitational wave mergers)
14:00 - Ricker, Paul (Common Envelope Evolution of Massive Binaries)
14:15 - D. Gies (Summary From massive stars to HMXBs to GW events)



  • Lidia Oskinova (co-chair), University of Potsdam, Germany
  • Enrico Bozzo (co-chair), University of Geneva, Switzerland
  • Doug Gies (co-chair), Georgia State University, USA
  • Daniel Holz (co-chair), University of Chicago, USA
  • John Blondin, North Carolina State University, USA
  • Tomek Bulik, Warsaw University, Poland
  • Malcolm Coe, University of Southampton, UK
  • Gloria Koenigsberger, Universidad Nacional Autonoma de Mexico, Mexico
  • Xiang-Dong Li, Nanjing University, China
  • Atsuo Okazaki, Hokkai-Gakuen University, Japan
  • Biswajit Paul, Raman Research Institute, India
  • MediumKonstantin Postnov, Moscow State University, Russia
  • Pablo Reig, Universtiy of Crete, Greece
  • Lara Sidoli, INAF-IASF Milano, Italy
  • John Tomsick, University of California, Berkeley, USA
  • Jose Miguel Torrejon, EPS Universidad de Alicante, Spain



Lidia Oskinova 


Link to External Website:


XXX IAU General Assembly | ACV - Austria Center Vienna  | Bruno-Kreisky-Platz 1  | 1220 Vienna