Gaia Data Release 2
- A. Brown, A. Vallenari, T. Zwitter
- PhysicsAstronomy & Astrophysics
- 25 April 2018
Context. The second data release of the Gaia mission (DR2) includes an advance catalogue of variable stars. The classifications of these stars are based on sparse photometry from the first 22 months…
Gaia Data Release 2
- F. Spoto, P. Tanga, T. Zwitter
- PhysicsAstronomy & Astrophysics
- 25 April 2018
The dramatic improvement brought by Gaia DR2 astrometry of SSOs is demonstrated by comparisons to the archive data and by preliminary tests on the detection of subtle non-gravitational effects.
The distances to Galactic low-mass X-ray binaries: consequences for black hole luminosities and kicks
- P. Jonker, G. Nelemans
- Physics
- 8 July 2004
We investigated the reported distances of Galactic black hole (BH) and neutron star low-mass X-ray binaries (LMXBs). Comparing the distances derived for the neutron stars Cyg X-2 and XTE J2123-058…
Gaia Data Release 2
- Gaia Collaboration, C. Babusiaux, T. Zwitter
- PhysicsAstronomy & Astrophysics
- 25 April 2018
Context. Gaia Data Release 2 provides high-precision astrometry and three-band photometry for about 1.3 billion sources over the full sky. The precision, accuracy, and homogeneity of both astrometry…
THE FIRST ACCURATE PARALLAX DISTANCE TO A BLACK HOLE
- J. Miller-Jones, P. Jonker, E. Gallo
- Physics
- 27 October 2009
Using astrometric VLBI observations, we have determined the parallax of the black hole X-ray binary V404 Cyg to be 0.418 ± 0.024 mas, corresponding to a distance of 2.39 ± 0.14 kpc, significantly…
A kilonova as the electromagnetic counterpart to a gravitational-wave source
- S. Smartt, T.-W. Chen, O. Yaron
- PhysicsNature
- 16 October 2017
Observations and physical modelling of a rapidly fading electromagnetic transient in the galaxy NGC 4993, which is spatially coincident with GW170817, indicate that neutron-star mergers produce gravitational waves and radioactively powered kilonovae, and are a nucleosynthetic source of the r-process elements.
Multi-messenger Observations of a Binary Neutron Star Merger
- B. Abbott, R. Abbott, P. Woudt
- PhysicsProceedings of Multifrequency Behaviour of High…
- 26 October 2019
On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced…
Six new candidate ultracompact X-ray binaries
- J. Zand, P. Jonker, C. Markwardt
- Physics
- 29 January 2007
Ultracompact X-ray binaries (UCXBs) appear able to sustain accretion onto the compact accretor at rates lower than in wider X-ray binaries. This may be understood by the smaller accretion disks in…
Gaia Early Data Release 3
- Gaia Collaboration, A. Brown, T. Zwitter
- PhysicsAstronomy & Astrophysics
- 20 November 2020
Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quality five-parameter…
A radio-pulsing white dwarf binary star
- T. Marsh, B. Gänsicke, P. Wheatley
- PhysicsNature
- 27 July 2016
The discovery is reported of a white dwarf/cool star binary that emits from X-ray to radio wavelengths and the spin-down power is an order of magnitude larger than that seen in electromagnetic radiation, which suggests that AR Sco is primarily spin-powered.
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