The Physics of Extreme-Gravity Stars

Session

Binary Evolution (and X-ray binaries)

19 Jun 2017, 09:00

122:026 (Nordita, Stockholm)

363. Formation of Binary Black Hole mergers

Phillip Podsiadlowski

19/06/2017, 09:00

365. Formation of Double Neutron Stars

Thomas Tauris

19/06/2017, 09:30

In recent years, the discovery rate of double neutron star (DNS) systems has increased rapidly and the coming decade will greatly enhance the number of both radio pulsar DNS systems, with the completion of the Square-Kilometre-Array, and DNS mergers from detections of high-frequency gravitational waves using LIGO. This calls for a new investigation of the formation and evolution of...

366. Black Hole X-ray Binaries in Milky Way Globular Clusters

Jay Strader

19/06/2017, 10:00

I will highlight results from our ongoing survey using deep radio continuum and X-ray data to search for accreting black holes in Milky Way globular clusters, presenting evidence that black holes may indeed be common in globular clusters.

367. Supernovae: The conservation of momentum `kick' revisited

John Bray

19/06/2017, 10:15

The idea that neutron stars (and possibly black holes) could get their peculiar spacial velocities from conservation of momentum between the ejected material and the compact remnant mass has been around for many years. We investigate this concept using the BPASS v2 stellar evolution models and our own compact remnant population synthesis code. We present some of the predicted...

368. Common envelope and compact binaries formation

Natasha Ivanova

19/06/2017, 11:00

Common-envelope events are fate-defining episodes in the lives of close binary systems. During a common envelope event, two stars temporarily orbit within a shared envelope, and the episode ends with an exciting outburst, leaving behind either a significantly shrunk binary, or a single merged star. I will review what is new about what we know the common envelope physics: when does a...

369. Shedding light on the black hole mass spectrum

Mario Spera

19/06/2017, 11:30

After the recent discovery of the first binary black hole mergers, the scientfic community is drawing growing attention to the study of the formation and the coalescence of compact object binary systems. Modeling the formation and the dynamical evolution of such fascinating systems is fundamental to interpret the forthcoming gravitational-wave detections and to make predictions on...

370. Formation and evolution of supergiant High Mass X-ray Binaries

Sylvain Chaty

19/06/2017, 11:45

A previously unknown population of High-Mass X-ray Binaries (HMXB) hosting supergiant stars has been revealed during the last years, with multi-wavelength campaigns including high energy (INTEGRAL, Swift, XMM, Chandra) and optical/infrared (mainly ESO) observations, including interferometric VLT observations. This population is constituted of obscured supergiant HMXB, and...

371. The formation of black holes in X-ray binaries and binary stellar black holes

Felix Mirabel

19/06/2017, 12:00

I will present the multiple strands of observational evidence for the formation of black holes in X- ray binaries and binary stellar black holes, the first sources of gravitational waves detected by LIGO. It is believed that stellar black holes (BHs) can be formed in two different ways: Either a massive star collapses directly into a BH without a supernova (SN) explosion, or an...

372. Mass Transfer, Binary Evolution and Gravitational Waves

Re'em Sari

19/06/2017, 14:00

373. The spin distribution of binary black hole mergers arising from field binaries

Kenta Hotokezaka

19/06/2017, 14:30

One of the puzzles in the recent observations of gravitational waves from binary black hole mergers is their low aligned spins. This spin distribution teaches us a lot about the progenitor scenario. We discuss the implications of the low aligned spins of the BBH mergers observed by LIGO to the field binary scenario based on the tidal synchronization argument. We show Wolf-Rayet and...