Výsledky vyhledávání - "Guillermo Bernabeu"

X-ray variability of the HMXB Cen X−3: evidence for inhomogeneous accretion flows

Autor: Jose M. Torrejon, Konstantin Postnov, Guillermo Bernabeu, G Sanjurjo-Ferrín, Lida Oskinova, J. J. Rodes-Roca

Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)

Cen X−3 is a compact high-mass X-ray binary likely powered by Roche lobe overflow. We present a phase-resolved X-ray spectral and timing analysis of two pointed XMM–Newton observations. The first one took place during a normal state of the source

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50c6e7ee2e47ffed85f6ade1d17b6f24
http://hdl.handle.net/10045/114151

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IGR J19294+1816: a new Be-X ray binary revealed through infrared spectroscopy

Autor: Guillermo Bernabeu, Jose M. Torrejon, A. Magazzu, J. J. Rodes-Roca, Enrique Solano

Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)

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 spectra of the selected counterpart acquired with the NICS instrument moun

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8bdc3db5b5f80a940034e1a3c127f8d

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XMM-Newton spectroscopy of the accreting magnetar candidate 4U0114+65

Autor: Jose M. Torrejon, Guillermo Bernabeu, G. Sanjurjo-Ferrrín, Konstantin Postnov, Lida Oskinova, J. J. Rodes-Roca

Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)

Aims. 4U0114+65 is one of the slowest known X-ray pulsars. We present an analysis of a pointed observation by the XMM-Newton X-ray telescope in order to study the nature of the X-ray pulsations and the accretion process, and to diagnose the physical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2cbbcae88677bd6035f447da4643558
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/46248

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Discussing the physical meaning of the absorption feature at 2.1 keV in 4U 1538-52

Autor: J. J. Rodes-Roca, S. Martínez-Núñez, Jose M. Torrejon, Guillermo Bernabeu, A. Giménez-García

Publikováno v: Astronomische Nachrichten. 335:804-811

This work was supported by the Spanish Ministry of Education and Science “De INTEGRAL a IXO: binarias de rayos X y estrellas activas”, project number AYA2010-15431, partially by GV2014/088 and MIF/14G04. JJRR acknowledges the support by the Spani

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::320574d988c634ddbb3e35d3f1178463
https://doi.org/10.1002/asna.201312111

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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

Autor: S. Martínez-Núñez, Jose M. Torrejon, Lidia M. Oskinova, J. Alonso-Santiago, Andreas Sander, Carlos González-Fernández, Guillermo Bernabeu, A. Giménez-García, Tomer Shenar, A. Gonzalez-Galan, J. J. Rodes-Roca, Wolf-Rainer Hamann

Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
Digital.CSIC. Repositorio Institucional del CSIC
instname

[Context]: 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 same time, show very different behavior in the X-rays. The r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::994de6e810eb76f622eee9063862af4a

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Higher accurate approximate solutions for the simple pendulum in terms of elementary functions

Autor: Augusto Beléndez, Manuel Ortuño, José Guillermo Bernabeu, Sergi Gallego, Jorge Francés

Publikováno v: European Journal of Physics. 31:L65-L70

A closed-form approximate expression for the solution of a simple pendulum in terms of elementary functions is obtained. To do this, the exact expression for the maximum tension of the string of the pendulum is first considered and a trial approximat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00c2ef955a997dbef7868fdc1c5fddfe
https://doi.org/10.1088/0143-0807/31/3/l04

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Orbital phase-resolved spectroscopy of 4U 1538−52 with MAXI

Autor: J. J. Rodes-Roca, Satoshi Nakahira, Guillermo Bernabeu, Jose M. Torrejon, Tatehiro Mihara, Angel Gímenez-García

Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)

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. Several models have been proposed to explain the accretion at different or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::819b46314a7da46649fcc86d54fe2d46
http://hdl.handle.net/10045/49045

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An XMM-Newton view of FeKα in high-mass X-ray binaries

Autor: Angel Gímenez-García, Jose M. Torrejon, J. J. Rodes-Roca, S. Martínez-Núñez, Guillermo Bernabeu, Lida Oskinova, W. Eikmann

Publikováno v: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)

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 line. This line is key to better understanding the physical properties

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85f0ad3344c23d4dded43d2564b1bb84
http://hdl.handle.net/10045/46265

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The CFEPS Kuiper Belt Survey: Strategy and presurvey results

Autor: Hans Jochen Scholl, Jj Kavelaars, M. Holman, P. Rousselot, O. Mousis, T. Grav, Paula Gabriela Benavídez, P. D. Nicholson, Brett Gladman, J. Wm. Parker, Jean-Marc Petit, R. L. Jones, A. Campo Bagatin, C. Veillet, G. Mars, Alain Doressoundiram, Guillermo Bernabeu

Publikováno v: Icarus
Icarus, Elsevier, 2006, 185, pp.508-522. ⟨10.1016/j.icarus.2006.07.024⟩
Icarus, Elsevier, 2006, 185 (2), pp.508-522. ⟨10.1016/j.icarus.2006.07.024⟩
Icarus, 2006, 185 (2), pp.508-522. ⟨10.1016/j.icarus.2006.07.024⟩
Icarus, 2006, 185, pp.508-522. ⟨10.1016/j.icarus.2006.07.024⟩

We present the data acquisition strategy and characterization procedures for the Canada-France Ecliptic Plane Survey (CFEPS), a sub-component of the Canada-France-Hawaii Telescope Legacy Survey. The survey began in early 2003 and as of summer 2005 ha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2b0af7f8596fa26b260ad760faeb537
https://doi.org/10.1016/j.icarus.2006.07.024

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Photometric study of the double cluster $\vec h$ & $\mathsf{\chi}$ Persei

Autor: Guillermo Bernabeu, Amparo Marco

Publikováno v: Astronomy & Astrophysics. 372:477-494

We present uvby CCD photometry of the central region of the double cluster h & Persei. We identify 350 stars, of which 214 were not included in Oosterhof's catalogue. Our magnitude limit V =1 6:5 allows us to reach early F spectral type and obtain ve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1eb42a7a90074481c76bced4171eb23d
https://doi.org/10.1051/0004-6361:20010441

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