Publications (15)
Cen x-3 as seen by MAXI during six years
Ã. Torregrosa, J. J. Rodes-Roca, J. M. Torrejón +2
The aim of this work is to study both light curve and orbital phase spectroscopy of this source taking advantage of the MAXI/GSC observation strategy. We have investigated the spec…
An XMM-Newton view of FeKα in HMXBs
A. Giménez-GarcÃa, J. M. Torrejón, W. Eikmann +4
We present a comprehensive analysis of the whole sample of available XMM-Newton observations of High Mass X-ray Binaries (HMXBs) until August, 2013, focusing on the FeKα emission…
The fundamental cyclotron line in 4U 1538-52
J. J. Rodes-Roca, J. M. Torrejón, J. G. Bernabéu
We present pulse phase averaged spectra of the high mass X-ray binary pulsar 4U 1538-52/QV Nor. Observations of this persistent accreting pulsar were made with the Rossi X-ray Timi…
Detecting emission lines with XMM-Newton in 4U 1538-52
J. J. Rodes-Roca, K. L. Page, J. M. Torrejón +2
Context. The properties of the X-ray emission lines are a fundamental tool for studying the nature of the matter surrounding the neutron star and the phenomena that produce these l…
Evidence of Compton cooling during an X-ray flare supports a neutron star nature of the compact object in 4U1700-37
M. Martinez-Chicharro, J. M. Torrejón, L. Oskinova +5
Based on new Chandra X-ray telescope data, we present empirical evidence of plasma Compton cooling during a flare in the non pulsating massive X-ray binary 4U1700-37. This behaviou…
GX 301-2 pre-periastron and apastron flares with MAXI
Ã. Torregrosa, J. J. Rodes-Roca, J. M. Torrejón +4
The bright high-mass X-ray binary GX 301-2 exhibits two periodic flare episodes along its orbit which are produced when the neutron star is close to the apastron and periastron pas…
High-resolution X-ray spectroscopy of Cen X-3 with XMM-Newton
J. J. Rodes-Roca, J. M. Torrejón, G. Sanjurjo-FerrÃn +1
The spectral analysis of two XMM-Newton observations of the high-mass X-ray binary system Cen X-3 is presented. In particular, it is focused on the eclipse and out-of-eclipse spect…
Iron line diagnostics of the stellar wind in X1908+075
J. Planelles-Villalva, J. M. Torrejón, J. J. Rodes-Roca +1
Aims. X1908+075 is a supergiant X-ray binary (SgXB) composed of an evolved OB star and a neutron star (NS) in a 4.4-day orbit. We aim to characterize the stellar wind, constrain th…
Measuring the stellar wind parameters in IGR J17544-2619 and Vela X-1 constrains the accretion physics in Supergiant Fast X-ray Transient and classical Supergiant X-ray Binaries
A. Gimenez-Garcia, T. Shenar, J. M. Torrejon +9
Classical Supergiant X-ray Binaries (SGXBs) and Supergiant Fast X-ray Transients (SFXTs) are two types of High-mass X-ray Binaries (HMXBs) that present similar donors but, at the s…
Orbital phase resolved spectroscopy of 4U1538-52 with MAXI
J. J. Rodes-Roca, T. Mihara, S. Nakahira +3
4U 1538-52, an absorbed high mass X-ray binary with an orbital period of 3.73 days, shows moderate orbital intensity modulations with a low level of counts during the eclipse. Seve…
Spectroscopic modeling of ionic structure in stellar winds of high-mass X-ray binaries
G. Sanjurjo-FerrÃn, V. Grinberg, I. El Mellah +6
High-mass X-ray binaries (HMXBs) provide a natural laboratory to study radiatively driven stellar winds under strong external X-ray irradiation. As the compact object moves along i…
IGR J19294+1816: a new Be-X ray binary revealed through infrared spectroscopy
J. J. Rodes-Roca, G. Bernabeu, A. Magazzù +2
The aim of this work is to characterize the counterpart to the INTEGRAL High Mass X-ray Binary candidate IGR J19294+1816 so as to establish its true nature. We obtained H band spec…
Discussing the physical meaning of the absorption feature at 2.1 keV in 4U 1538-52
J. J. Rodes-Roca, J. M. Torrejón, S. MartÃnez-Núñez +2
High resolution X-ray spectroscopy is a powerful tool for studying the nature of the matter surrounding the neutron star in X-ray binaries and its interaction between the stellar w…
The first cyclotron harmonic of 4U 1538-52
J. J. Rodes-Roca, J. M. Torrejón, I. Kreykenbohm +3
Cyclotron resonant scattering features are an essential tool for studying the magnetic field of neutron stars. The fundamental line provides a measure of the field strength, while…
A thousand looks at X Persei: X-ray spectroscopy at high time resolution
G. Sanjurjo-FerrÃn, J. M. Torrejón, J. J. Rodes-Roca +3
X Persei is a classical Be/X-ray binary composed of an O9.5III-B0V Be-type star and a neutron star (NS). The NS exhibits coherent pulsations with a spin period of ~837 s, orbiting…