Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Rizo, I."'
Autor:
Sanchez, D. Mata, Torres, M. A. P., Casares, J., Munoz-Darias, T., Padilla, M. Armas, Yanes-Rizo, I. V.
The X-ray transient Swift J1727.8-1613 ended its 10-month discovery outburst on June of 2024, when it reached an optical brightness comparable to pre-discovery magnitudes. With the aim of performing a dynamical study, we launched an optical spectrosc
Externí odkaz:
http://arxiv.org/abs/2408.13310
Autor:
van der Wateren, E., Bassa, C. G., Janssen, G. H., Yanes-Rizo, I. V., Casares, J., Nelemans, G., Stappers, B. W., Tan, C. M.
We report on radio timing observations of PSR J0210+5845 which reveal large deviations from typical pulsar spin-down behaviour. We interpret these deviations as being due to binary motion around the $V=13.5$ star 2MASS J02105640$+$5845176, which is c
Externí odkaz:
http://arxiv.org/abs/2312.01892
Autor:
Yanes-Rizo, I. V., Torres, M. A. P., Casares, J., Monelli, M., Jonker, P. G., Abbot, T., Padilla, M. Armas, Muñoz-Darias, T.
We present VLT spectroscopy, high-resolution imaging and time-resolved photometry of KY TrA, the optical counterpart to the X-ray binary A 1524-61. We perform a refined astrometry of the field, yielding improved coordinates for KY TrA and the field s
Externí odkaz:
http://arxiv.org/abs/2311.08480
Autor:
Panizo-Espinar, G., Muñoz-Darias, T., Padilla, M. Armas, Jiménez-Ibarra, F., Sánchez, D. Mata, Yanes-Rizo, I. V., Alabarta, K., Baglio, M. C., Caruso, E., Casares, J., Corral-Santana, J. M., Lewis, F., Russell, D. M., Saikia, P., Sánchez-Sierras, J., Shahbaz, T., Torres, M. A. P., Vincentelli, F.
Swift J1357.2-0933 is a black hole transient of particular interest due to the optical, recurrent dips found during its first two outbursts (in 2011 and 2017), with no obvious X-ray equivalent. We present fast optical photometry during its two most r
Externí odkaz:
http://arxiv.org/abs/2311.03460
Autor:
Casares, J., Yanes-Rizo, I. V., Torres, M. A. P., Abbott, T. M. C., Padilla, M. Armas, Charles, P. A., Cuneo, V. A., Muñoz-Darias, T., Jonker, P. G., Maguire, K.
We present evidence for a 0.278(8) d (=6.7 h) orbital period in the X-ray transient GRS 1716-249 (=N Oph 93), based on a superhump modulation detected during the 1995 mini-outburst plus ellipsoidal variability in quiescence. With a quiescent magnitud
Externí odkaz:
http://arxiv.org/abs/2310.11561
Autor:
Rizo, I. V. Yanes, Torres, M. A. P., Casares, J., Motta, S. E., Muñoz-Darias, T., Rodríguez-Gil, P., Padilla, M. Armas, Jiménez-Ibarra, F., Jonker, P. G., Corral-Santana, J., Fender, R.
We present two contiguous nights of simultaneous time-resolved GTC spectroscopy and WHT photometry of the black hole X-ray transient XTE J1859+226, obtained in 2017 July during quiescence. Cross-correlation of the individual spectra against a late K-
Externí odkaz:
http://arxiv.org/abs/2209.10395
Autor:
Motta, S. E, Belloni, T., Stella, L., Pappas, G., Casares, J. A., Muñoz-Darias, T., Torres, M. A. P., Yanes-Rizo, I. V.
The X-ray light curves of accreting black holes and neutron stars in binary systems show various types of quasi-periodic oscillations (QPOs), the origin of which is still debated. The Relativistic Precession Model identifies the QPO frequencies with
Externí odkaz:
http://arxiv.org/abs/2209.10376
Autor:
Casares, J., Muñoz-Darias, T., Torres, M. A. P., Sanchez, D. Mata, Britt, C. T., Padilla, M. Armas, Alvarez-Hernandez, A., Cuneo, V. A., Hernandez, J. I. Gonzalez, Jimenez-Ibarra, F., Jonker, P. G., Panizo-Espinar, G., Sanchez-Sierras, J., Yanes-Rizo, I. V.
We present a new method to derive binary inclinations in quiescent black hole (BH) X-ray transients (XRTs), based on the depth of the trough (T) from double-peaked Ha emission profiles arising in accretion discs. We find that the inclination angle (i
Externí odkaz:
http://arxiv.org/abs/2207.01628
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Akademický článek
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