output
19922026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

Showing 2007 · astro-phShow all

6 papers · 2 filters

astro-ph2007★ 14 cited

X-Ray Eclipse Time Delays in 4U2129+47

E. Bozzo, M. Falanga, A. Papitto +8

4U 2129+47 was discovered in the early 80's and classified as an accretion disk corona source due to its broad and partial X-ray eclipses. The 5.24 hr binary orbital period was inf…

astro-ph2007★ 10 cited

Precise determination of orbital parameters in system with slowly drifting phases: application to the case of XTE J1807-294

A. Riggio, T. Di Salvo, L. Burderi +4

We describe a timing technique that allows to obtain precise orbital parameters of an accreting millisecond pulsar in those cases in which intrinsic variations of the phase delays…

astro-ph2007★ 95 cited

Orbital Evolution of an Accreting Millisecond Pulsar: Witnessing the Banquet of a Hidden Black Widow?

T. Di Salvo, L. Burderi, A. Riggio +2

We have performed a timing analysis of all the four X-ray outbursts from the accreting millisecond pulsar SAX J1808.4-3658 observed so far by the PCA on board RXTE. For each of the…

astro-ph2007★ 53 cited

BeppoSAX observation of 4U 1705-44: detection of hard X-ray emission in the soft state

S. Piraino, A. Santangelo, T. Di Salvo +4

4U 1705-44 is one of the best studied type I X-ray burster and atoll sources. Since it covers a wide range in luminosity (from a few to 50 x 10^{36} erg s^{-1}) and shows clear spe…

astro-ph2007★ 49 cited

Modified Debye-Huckel Electron Shielding and Penetration Factor

P. Quarati, A. M. Scarfone

Screened potential, modified by non standard electron cloud distributions responsible for the shielding effect on fusion of reacting nuclei in astrophysical plasmas, is derived. Th…

astro-ph2007

On the maximum efficiency of the propeller mass-ejection mechanism

M. Falanga, E. Bozzo, L. Stella +3

Aims. We derive simple estimates of the maximum efficiency with which matter can be ejected by the propeller mechanism in disk-fed, rotating magnetic neutron stars. Some binary evo…