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X-ray binaries in M101 with HST optical data
The high-energy emission from nearby, star-forming galaxies is dominated by X-ray binaries, where a neutron star or black hole is accreting mass from either a low-mass... -
Swift/XRT and NICER timing study of MAXI J1820+070
We present a detailed timing analysis of the bright black hole X-ray binary MAXI J1820+070 (ASASSN-18ey), during its first detected outburst lasting from 2018 March until 2019... -
Deep Chandra survey of the SMC. III. HMXBs
We have compiled the most complete census of high-mass X-ray binaries (HMXBs) in the Small Magellanic Cloud with the aim to investigate the formation efficiency of young... -
24yr of radio observations of V404 Cygni
Relativistic outflows are believed to be a common feature of black hole X-ray binaries (BHXBs) at the lowest accretion rates, when they are in their "quiescent" spectral state.... -
IR spectroscopy of symbiotic stars. XII. V934 Her
The X-ray symbiotic (SyXB) V934 Her = 4U1700+24 is an M giant-neutron star (NS) binary system. Employing optical and infrared radial velocities spanning 29yr combined with the... -
Times of X-ray minima & orbit numbers of Cyg X-3
By using available archival X-ray data, we significantly extended the list of times of X-ray minima. The new list includes 65 data points obtained by critically reanalyzing RXTE... -
Opt/NIR obs. of 1FGLJ1417.7-4407 neutron star bin.
The Fermi {gamma}-ray source 1FGL J1417.7-4407 (J1417) is a compact X-ray binary with a neutron star primary and a red giant companion in a ~5.4 days orbit. This initial... -
X-ray stacking analysis of Chandra-COSMOS gal.
We present an X-ray stacking analysis of ~75000 star-forming galaxies between 0.1<z<5.0 using the Chandra COSMOS-Legacy survey to study the X-ray emission of... -
Deep Chandra obs. of X-ray point sources in M87
We present a study of X-ray source populations in M87, the cD galaxy of the Virgo cluster, using 12 archival Chandra observations with a total exposure of ~680ks spanning about... -
Optical LCs of the counterpart to IC 10 X-2
We present an optical and infrared (IR) study of IC 10 X-2, a high-mass X-ray binary in the galaxy IC 10. Previous optical and X-ray studies suggest that X-2 is a Supergiant... -
Spectral analysis of low-mass X-ray binaries
A recent study of a small sample of X-ray binaries (XRBs) suggests a significant softening of spectra of neutron star (NS) binaries as compared to black hole (BH) binaries in... -
Two dips in the LC of 3XMMJ004232.1+411314
We performed a search for eclipsing and dipping sources in the archive of the EXTraS project-a systematic characterization of the temporal behavior of XMM-Newton point sources.... -
eta Carinae obs. around the 2014 X-ray minimum
We report on Swift X-ray Telescope observations of Eta Carinae ({eta}Car), an extremely massive, long-period, highly eccentric binary obtained during the 2014.6 X-ray... -
Collinder 261 Chandra sources & optical counterparts
We present the first X-ray study of Collinder 261 (Cr261), which at an age of 7Gyr is one of the oldest open clusters known in the Galaxy. Our observation with the Chandra X-Ray... -
Chandra observations of IC 10
We have monitored the Cassiopeia dwarf galaxy (IC 10) in a series of 10 Chandra ACIS-S observations to capture its variable and transient X-ray source population, which is... -
Eclipsing LMXB at the center of 3FGL J0427.9-6704
We report the discovery of an eclipsing low-mass X-ray binary at the center of the 3FGL error ellipse of the unassociated Fermi/Large Area Telescope {gamma}-ray source 3FGL... -
Fermi/GBM obs. of V404 Cygni 2015 outburst
V404 Cygni was discovered in 1989 by the Ginga X-ray satellite during its only previously observed X-ray outburst and soon after confirmed as a black hole binary. On 2015 June... -
X-ray observations of HCG galaxies
We obtain total galaxy X-ray luminosities, L_X_, originating from individually detected point sources in a sample of 47 galaxies in 15 compact groups of galaxies (CGs). For the... -
Megasecond Chandra XVP obs. of NGC3115. II.
We carried out an in-depth study of low-mass X-ray binaries (LMXBs) detected in the nearby lenticular galaxy NGC 3115 using the Megasecond Chandra X-ray Visionary Project... -
Swift/XRT 0.5-10keV obs. of MAXI J1659-152
We present an energy dependent X-ray variability study of the 2010 outburst of the black hole X-ray binary MAXI J1659-152 with the Swift X-ray Telescope (XRT). The broadband...
