159 citations · 516 across the 15 of their papers we have counts for
15 papers
Fast-varying time lags in the Quasi-periodic Oscillation in GRS 1915+105
Tomaso M. Belloni, Mariano Mendez, Federico Garcia +1
The properties of sub-second time variability of the X-ray emission of the black-hole binary GRS 1915+105 are very complex and strictly connected to its patterns of variability obs…
A systematic study of the high-frequency bump in the black-hole low-mass X-ray binary GX 339-4
Yuexin Zhang, Mariano Méndez, Sara E. Motta +8
The high-frequency bump, characterized by a frequency exceeding ~30 Hz, represents a seldom-explored time-variability feature in the power density spectrum (PDS) of black-hole X-ra…
Rethinking the 67 Hz QPO in GRS 1915+105: type-C QPOs at the innermost stable circular orbit
S. E. Motta, T. M. Belloni
Context. The study of Quasi-Periodic Oscillations (QPO) at low and high frequency in the variability of the high-energy emission from black-hole binaries and their physical interpr…
Basics of Fourier Analysis for High-Energy Astronomy
T. M. Belloni, D. Bhattacharya
The analysis of time variability, whether fast variations on time scales well below the second or slow changes over years, is becoming more and more important in high-energy astron…
A variable-frequency HFQPO in GRS 1915+105 as observed with Astrosat
Tomaso M. Belloni, Dipankar Bhattacharya, Pietro Caccese +3
From the analysis of more than 92 ks of data obtained with the laxpc instrument on board Astrosat we have detected a clear high-frequency QPO whose frequency varies between 67.4 an…
Study of the X-ray properties of the neutron-star binary 4U 172834 from the soft to hard state
Yanan Wang, Mariano Méndez, Diego Altamirano +7
We studied five XMM-Newton observations of the neutron-star binary 4U 172834 covering the hard, intermediate and soft spectral states. By jointly fitting the spectra with severa…