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18 papers · 2 filters
Bright radio emission from an ultraluminous stellar-mass microquasar in M31
Matthew J. Middleton, James C. A. Miller-Jones, Sera Markoff +34
A subset of ultraluminous X-ray sources (those with luminosities < 10^40 erg/s) are thought to be powered by the accretion of gas onto black holes with masses of ~5-20 M_solar, pro…
3D deflagration simulations leaving bound remnants: a model for 2002cx-like Type Ia supernovae
M. Kromer, M. Fink, V. Stanishev +10
2002cx-like supernovae are a sub-class of sub-luminous Type Ia supernovae. Their light curves and spectra are characterized by distinct features that indicate strong mixing of the…
Swift observations of the ultraluminous X-ray source XMMU J004243.6+412519 in M31
P. Esposito, S. E. Motta, F. Pintore +2
We report on a multi-wavelength study of the recently discovered X-ray transient XMMU J004243.6+412519 in M31, based on data collected with Swift and the 1.8-m Copernico Telescope…
Dynamics of stellar black holes in young star clusters with different metallicities - I. Implications for X-ray binaries
M. Mapelli, L. Zampieri, E. Ripamonti +1
We present N-body simulations of intermediate-mass (3000-4000 Msun) young star clusters (SCs) with three different metallicities (Z=0.01, 0.1 and 1 Zsun), including metal-dependent…
The First Spectroscopically Resolved Sub-parsec Orbit of a Supermassive Binary Black Hole
E. Bon, P. Jovanović, P. Marziani +6
One of the most intriguing scenarios proposed to explain how active galactic nuclei are triggered involves the existence of a supermassive binary black hole system in their cores.…
The Radio Light Curve of the Gamma-Ray Nova in V407 Cyg: Thermal Emission from the Ionized Symbiotic Envelope, Devoured from Within by the Nova Blast
Laura Chomiuk, Miriam I. Krauss, Michael P. Rupen +10
We present multi-frequency radio observations of the 2010 nova event in the symbiotic binary V407 Cygni, obtained with the Karl G. Jansky Very Large Array and spanning 1-45 GHz and…