205 citations · 713 across the 18 of their papers we have counts for
9 papers · 1 filter
X-ray spectra from magnetar candidates. II Resonant cross sections for electron-photon scattering in the relativistic regime
L. Nobili, R. Turolla, S. Zane
Recent models of spectral formation in magnetars called renewed attention on electron-photon scattering in the presence of ultra-strong magnetic fields. Investigations presented so…
A Disk--Jet interaction model for the X--Ray Variability in Microquasars
Luciano Nobili
We propose a simple dynamical model that may account for the observed spectral and temporal properties of GRS 1915+105 and XTE J1550-5634. The model is based on the assumption that…
A Comptonization Model for Phase Lag Variability in GRS 1915+105
L. Nobili, R. Turolla, L. Zampieri +1
In this Letter we propose a simple thermal comptonization model to account for the observed properties of the phase lags associated to the ``plateau'' intervals of GRS 1915+105. By…
Dynamical Comptonization in spherical flows: black hole accretion and stellar winds
R. Turolla, S. Zane, L. Zampieri +1
The transport of photons in steady, spherical, scattering flows is investigated. The moment equations are solved analytically for accretion onto a Schwarzschild black hole, taking…
General relativistic radiative transfer in hot astrophysical plasmas: a characteristic approach
Silvia Zane, Roberto Turolla, Luciano Nobili +1
In this paper we present a characteristic method for solving the transfer equation in differentially moving media in a curved spacetime. The method is completely general, but its c…
On the Mathematical Character of the Relativistic Transfer Moment Equations
R. Turolla, L. Zampieri, L. Nobili
General--relativistic, frequency--dependent radiative transfer in spherical, differentially--moving media is considered. In particular we investigate the character of the different…
On the Nature of Photospheric Oscillations in Strong X--Ray Bursts
Iosif Lapidus, Luciano Nobili, Roberto Turolla
A possible sound origin for the photospheric oscillations in the X--ray bursting sources 1608-522 and 2127+119 is suggested. It is shown that standing sound waves in an expanding s…
Accretion Rates in X--Ray Bursting Sources
Iosif Lapidus, Luciano Nobili, Roberto Turolla
We present estimates for the accretion rates in 13 X--ray bursting sources which exhibit photospheric expansion, basing on theoretical models of stationary, radiatively driven wind…
Winds from Neutron Stars and Strong Type I X--Ray Bursts
Luciano Nobili, Roberto Turolla, Iosif Lapidus
A model for stationary, radiatively driven winds from X--ray bursting neutron stars is presented. General relativistic hydrodynamical and radiative transfer equations are integrate…