Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Torrejon, Jose M."'
Autor:
Huenemoerder, David P., Pradhan, Pragati, Canizares, Claude R., Gunderson, Sean, Ignace, Richard, Nichols, Joy S., Pollock, A. M. T., Schulz, Norbert S., Swarm, Dustin K., Torrejon, Jose M.
High-resolution X-ray spectra of $\pi\,$Aqr, a $\gamma\,$Cas-type star, obtained with the Chandra/HETG grating spectrometer, revealed emission lines of H-like ions of Mg, Si, S, and Fe, a strong, hard continuum, and a lack of He-like ions, indicating
Externí odkaz:
http://arxiv.org/abs/2404.16977
Autor:
Naze, Yael, Motch, Christian, Rauw, Gregor, Kumar, Shami, Robrade, Jan, de Oliveira, Raimundo Lopes, Smith, Myron A., Torrejon, Jose M.
Publikováno v:
MNRAS, 493, 2511-2517 (2020)
In the last years, a peculiarity of some Be stars - their association with unusually hard and intense X-ray emission - was shown to extend beyond a mere few cases. In this paper, we continue our search for new cases by performing a limited survey of
Externí odkaz:
http://arxiv.org/abs/2002.05415
Autor:
Kühnel, Matthias Bissinger né, Kreykenbohm, Ingo, Ferrigno, Carlo, Pottschmidt, Katja, Marcu-Cheatham, Diana M., Fürst, Felix, Rothschild, Richard E., Kretschmar, Peter, Klochkov, Dmitry, Hemphill, Paul, Hertel, Dominik, Müller, Sebastian, Sokolova-Lapa, Ekaterina, Oruru, Bosco, Grinberg, Victoria, Martínez-Núñez, Silvia, Torrejón, José M., Becker, Peter A., Wolff, Michael T., Ballhausen, Ralf, Schwarm, Fritz-Walter, Wilms, Jörn
Publikováno v:
A&A 634, A99 (2020)
We present an analysis of X-ray spectra of the high mass X-ray binary 4U 0115+634 as observed with Suzaku and RXTE in 2011 July, during the fading phase of a giant X-ray outburst. We used a continuum model consisting of an absorbed cutoff power-law a
Externí odkaz:
http://arxiv.org/abs/1912.06725
Akademický článek
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Autor:
Müller, Sebastian, Ferrigno, Carlo, Kühnel, Matthias, Schönherr, Gabriele, Becker, Peter A., Wolff, Michael T., Hertel, Dominik, Schwarm, Fritz-Walter, Grinberg, Victoria, Obst, Maria, Caballero, Isabel, Pottschmidt, Katja, Fürst, Felix, Kreykenbohm, Ingo, Rothschild, Richard E., Hemphill, Paul, Núñez, Silvia Martínez, Torrejón, José M., Klochkov, Dmitry, Staubert, Rüdiger, Wilms, Jörn
We report on an outburst of the high mass X-ray binary 4U 0115+63 with a pulse period of 3.6s in 2008 March/April as observed with RXTE and INTEGRAL. During the outburst the neutron star's luminosity varied by a factor of 10 in the 3--50\,keV band. I
Externí odkaz:
http://arxiv.org/abs/1211.6298
We present an analysis of a pointed 141 ks Chandra high resolution transmission gratings observation of the Be X-ray emitting star HD110432, a prominent member of the gamma Cas analogs. The Chandra lightcurve shows a high variability but its analysis
Externí odkaz:
http://arxiv.org/abs/1203.1004
Autor:
de Oliveira, Raimundo Lopes, Motch, Christian, Smith, Myron A., Negueruela, Ignacio, Torrejon, Jose M.
(ABRIDGED) - HD 110432 is the first proposed, and best studied, member of a growing group of Be stars with X-ray properties similar to gamma Cas. These stars exhibit hard-thermal X-ray emissions (kT ~> 7 keV) that are variable on all measurable times
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701767
Be stars in open clusters. III. A uvby-beta calibration for the astrophysical parameters of Be stars
Autor:
Fabregat, Juan, Torrejon, Jose M.
We present an empirical calibration of the uvby-beta photometric system to determine the intrinsic colours and indices and the astrophysical parameters of the underlying star, valid for Be stars earlier than B5. The procedure allows the determination
Externí odkaz:
http://arxiv.org/abs/astro-ph/9712246
Autor:
Torregrosa Alberola, Álvaro, Rodes Roca, José Joaquín, Torrejon, Jose M., Sanjurjo-Ferrín, Graciela, Bernabeu, Guillermo
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 spectral and light curve properties of the X-ray emission from Cen X-3 alo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::811e7655e42507d9cccaa121dac39015
Autor:
Rodes Roca, José Joaquín, Torrejon, Jose M., Martinez-Chicharro, Maria, García-Lozano, Rubén, Sanjurjo-Ferrín, Graciela, Bernabeu, Guillermo
Publikováno v:
RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
Universidad de Alicante (UA)
En general, resulta demasiado habitual para el alumnado de grado en ingeniería o arquitectura utilizar las fórmulas matemáticas sin comprender adecuadamente su significado físico. El principal objetivo del trabajo es identificar si la evaluación
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::dfb648cbb12b4965ad6a3e55fdc3a1a1
http://hdl.handle.net/10045/120850
http://hdl.handle.net/10045/120850