335 citations · 1k across the 14 of their papers we have counts for
14 papers
The comptonizing medium of the black-hole X-ray binary MAXI~J1535571 through type-C quasi-periodic oscillations
Divya Rawat, Mariano Méndez, Federico García +7
We present a detailed spectral and temporal analysis of the black-hole candidate MAXI~J1535571 using NICER observations in September and October 2017. We focus specifically on o…
vKompth: A variable Comptonisation model for low-frequency quasi-periodic oscillations in black-hole X-ray binaries
Candela Bellavita, Federico García, Mariano Méndez +1
Low mass X-ray binaries (LMXBs) show strong variability over a broad range of time scales. The analysis of this variability, in particular of the quasi-periodic oscillations (QPO),…
Variability and phase lags of the type-C quasi-periodic oscillation of MAXI J1348-630 with NICER
Kevin Alabarta, Mariano Méndez, Federico García +4
We study the properties of the type-C quasi-periodic oscillation (type-C QPO) of MAXI J1348-630 during its 2019 outburst and reflare with NICER. This is the first time that the evo…
The evolving properties of the corona of GRS 1915+105: A spectral-timing perspective through variable-Comptonisation modelling
Federico García, Konstantinos Karpouzas, Mariano Méndez +4
The inverse Compton process by which soft photons are up-scattered by hot electrons in a corona plays a fundamental role in shaping the X-ray spectra of black-hole (BH) low-mass X-…
The evolution of the high-frequency variability in the black hole candidate GRS 1915+105 as seen by RXTE
Yuexin Zhang, Mariano Méndez, Federico García +5
GRS 1915+105 can show type-C quasi-periodic oscillations (QPOs) in the power density spectrum. A high-frequency QPO (HFQPO) at 67 Hz has been observed in this source, albeit less o…
The evolution of the corona in MAXI J1535-571 through type-C quasi-periodic oscillations with Insight-HXMT
Yuexin Zhang, Mariano Méndez, Federico García +14
Type-C quasi-periodic oscillations (QPOs) in black hole X-ray transients can appear when the source is in the low-hard and hard-intermediate states. The spectral-timing evolution o…
Coupling between the accreting corona and the relativistic jet in the micro quasar GRS 1915+105
Mariano Mendez, Konstantinos Karpouzas, Federico Garcia +4
GRS 1915+105 was the first stellar-mass black-hole in our Galaxy to display a superluminal radio jet, similar to those observed in active galactic nuclei with a supermassive black…
A variable corona for GRS 1915+105
Konstantinos Karpouzas, Mariano Méndez, Federico García +4
Most models of the low frequency quasi periodic oscillations (QPOs) in low-mass X-ray binaries (LMXBs) explain the dynamical properties of those QPOs. On the other hand, in recent…
A two-component Comptonisation model for the type-B QPO in MAXI J1348-630
Federico García, Mariano Méndez, Konstantinos Karpouzas +3
Spectral-timing analysis of the fast variability observed in X-rays is a powerful tool to study the physical and geometrical properties of the accretion/ejection flows in black-hol…
A Systematic Analysis of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GRS 1915+105
Liang Zhang, Mariano Méndez, Diego Altamirano +9
We present a systematic analysis of the phase lags associated with the type-C QPOs in GRS 1915+105 using RXTE data. Our sample comprises of 620 RXTE observations with type-C QPOs r…
The Comptonising medium of the neutron star in 4U 1636-53 through its lower kilohertz Quasi-Periodic Oscillations
Konstantinos Karpouzas, Mariano Méndez, Evandro M. Ribeiro +3
Inverse Compton scattering dominates the high energy part of the spectra of neutron star (NS) low mass X-ray binaries (LMXBs). It has been proposed that inverse Compton scattering…
The amplitude of the kilohertz quasi-periodic oscillations in 4U 163653 in the frequency-energy space
Evandro M. Ribeiro, Mariano Méndez, Marcio G. B. de Avellar +2
We present for the neutron-star low-mass X-ray binary 4U 163653, and for the first time for any source of kilohertz quasi-periodic oscillations (kHz QPOs), the two-dimensional b…
A population study of gaseous exoplanets
A. Tsiaras, I. P. Waldmann, T. Zingales +8
We present here the analysis of 30 gaseous extrasolar planets, with temperatures between 600 and 2400 K and radii between 0.35 and 1.9 . The quality of the HST/WFC3…
Wayne - A Simulator for HST WFC3 IR Grism Spectroscopy
R. Varley, A. Tsiaras, K. Karpouzas
Wayne is an algorithm that simulates Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) grism spectroscopic frames including sources of noise and systematics. It can simulate…