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Optical variability of the accretion disk around the intermediate mass black hole ESO 243-49 HLX-1 during the 2012 outburst
N. A. Webb, O. Godet, K. Wiersema +5
We present dedicated quasi-simultaneous X-ray (Swift) and optical (Very Large Telescope (VLT), V- and R-band) observations of the intermediate mass black hole candidate ESO 243-49…
Combined Analysis of Hubble and VLT Photometry of the Intermediate Mass Black Hole ESO 243-49 HLX-1
Sean A. Farrell, Mathieu Servillat, Jeanette C. Gladstone +11
In this paper we present a combined analysis of data obtained with the Hubble Space Telescope (HST), Very Large Telescope (VLT), and Swift X-ray telescope (XRT) of the intermediate…
DASCH 100-yr light curves of high-mass X-ray binaries
Mathieu Servillat, S. Tang, J. E. Grindlay +1
We analyzed the 100-yr light curves of Galactic high-mass X-ray binaries using the Harvard photographic plate collection, made accessible through the DASCH project (Digital Access…
Herschel views on ultra-luminous X-ray sources
Mathieu Servillat, Alexis Coleiro, Sylvain Chaty
The nature of ultra-luminous X-ray sources (ULXs), which are off-nuclear extragalactic X-ray sources that exceed the Eddington luminosity for a stellar-mass black hole, is still la…
Herschel observations of INTEGRAL supergiant High Mass X-ray Binaries
Sylvain Chaty, Alexis Coleiro, Mathieu Servillat +2
We present preliminary results on Herschel/PACS mid/far-infrared photometric observations of INTEGRAL supergiant High Mass X-ray Binaries (HMXBs), with the aim of detecting the pre…
Demographics of the Galaxies Hosting Short-duration Gamma-Ray Bursts
Wen-fai Fong, Edo Berger, Ryan Chornock +17
We present observations of the afterglows and host galaxies of three short-duration gamma-ray bursts (GRBs): 100625A, 101219A and 110112A. We find that GRB 100625A occurred in a z=…
CV1 in the globular cluster M 22: confirming its nature through X-ray observations and optical spectroscopy
Natalie Webb, Mathieu Servillat
Context. Observations of cataclysmic variables in globular clusters appear to show a dearth of outbursts compared to those observed in the field. A number of explanations have been…
Measurement of the Radius of Neutron Stars with High S/N Quiescent Low-mass X-ray Binaries in Globular Clusters
Sebastien Guillot, Mathieu Servillat, Natalie A. Webb +1
This paper presents the measurement of the neutron star (NS) radius using the thermal spectra from quiescent low-mass X-ray binaries (qLMXBs) inside globular clusters (GCs). Recent…
Mass/Radius Constraints on the Quiescent Neutron Star in M13 Using Hydrogen and Helium Atmospheres
Andrei Catuneanu, Craig O. Heinke, Gregory R. Sivakoff +2
The mass and radius of the neutron star (NS) in low-mass X-ray binaries can be obtained by fitting the X-ray spectrum of the NS in quiescence, and the mass and radius constrains th…