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Journal Club


"Heartbeats from IGR J17091-362"

A. Janiuk (CFT PAN)

Based on ''The Faint "Heartbeats" of IGR J17091-3624: An Exceptional Black Hole Candidate'', Altamirano et al., 2011 (ApJL, 742, L17)


"Determination of the mass and radius of neutron stars"

M. Fortin (NCAC, Warsaw)

Based on "The Mass and Radius of the Neutron Star in the Bulge Low-mass X-Ray Binary KS 1731-260"
by Özel, Feryal; Gould, Andrew; Güver, Tolga (ApJ 748:5, 2012)

"The Galactic centre mini-spiral"

D. Kunneriath (Prague Relativistic Astrophysics, Czech Academy of Sciences)

High angular resolution radio interferometry observations at high frequencies enable us to study the emission mechanisms of the central region of our Galactic Centre, which harbours the supermassive black hole source Sgr A*, in great detail. We present high resolution maps along with a spectral index analysis of the extended emission of the mini-spiral region at 3 and 1.3 mm, and compare it to infrared maps of the region, in the NIR Br-gamma at 2.16 micron and the MIR at 8.6 micron. Physical properties of the gas and dust in the region such as spectral index, emission measure, density, mass and extinction are presented.


"Discovery of the most isolated globular cluster in the local universe"

A. Hypki (NCAC, Warsaw)

Based on Jang et al., arXiv:1205.3559


"The Inter-Eruption Timescale of Classical Novae from Expansion of the Z Camelopardalis Shell"

M. Otulakowska-Hypka (NCAC, Warsaw)

Based on Shara et al., arXiv:1205.3531