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Vortex dynamics and pinning properties analysis of MgB2 bulk samples by ac susceptibility measurements
C. Senatore, M. Polichetti, D. Zola +3
The flux lines dynamics have been investigated on MgB2 bulk superconductors obtained by reactive liquid infiltration by measuring the ac magnetic susceptibility. The fundamental an…
Neutrino trapping and accretion models for Gamma-Ray Bursts
Tiziana Di Matteo, Rosalba Perna, Ramesh Narayan
Many models of Gamma Ray Bursts invoke a central engine consisting of a black hole of a few solar masses accreting matter from a disk at a rate of a fraction to a few solar masses…
Accretion onto the Supermassive Black Hole in M87
Tiziana Di Matteo, Steven W. Allen, Andrew C. Fabian +2
Chandra X-ray observations of the giant elliptical galaxy M87 resolve the thermal state of the hot interstellar medium into the accretion (Bondi) radius of its central 3 10^9 Msun…
Resolving the Composite Fe K-alpha Emission Line in the Galactic Black Hole Cygnus X-1 with Chandra
J. M. Miller, A. C. Fabian, R. Wijnands +8
We observed the Galactic black hole Cygnus X-1 with the Chandra High Energy Transmission Grating Spectrometer for 30 kiloseconds on 4 January, 2001. The source was in an intermedia…