Zobrazeno 1 - 10
of 571
pro vyhledávání: '"Muñoz Darias T"'
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:
Kennedy, M. R., Callanan, P., Garnavich, P. M., Breton, R. P., Brown, A. J., Segura, N. Castro, Dhillon, V. S., Dyer, M. J., Garbutt, J., Green, M. J., Hakala, P., Jiminez-Ibarra, F., Kerry, P., Fijma, S., Littlefair, S., Munday, J., Mason, P. A., Mata-Sanchez, D., Munoz-Darias, T., Parsons, S., Pelisoli, I., Sahman, D.
UW Coronae Borealis (UW CrB) is a low mass X-ray binary that shows both Type 1 X-ray and optical bursts, which typically last for 20 s. The system has a binary period of close to 2 hours and is thought to have a relatively high inclination due to the
Externí odkaz:
http://arxiv.org/abs/2408.06404
Autor:
Podgorný, J., Svoboda, J., Dovčiak, M., Veledina, A., Poutanen, J., Kaaret, P., Bianchi, S., Ingram, A., Capitanio, F., Datta, S. R., Egron, E., Krawczynski, H., Matt, G., Muleri, F., Petrucci, P. -O., Russell, T. D., Steiner, J. F., Bollemeijer, N., Brigitte, M., Segura, N. Castro, Emami, R., García, J. A., Hu, K., Iacolina, M. N., Kravtsov, V., Marra, L., Mastroserio, G., Muñoz-Darias, T., Nathan, E., Negro, M., Ratheesh, A., Cavero, N. Rodriguez, Taverna, R., Tombesi, F., Yang, Y. J., Zhang, W., Zhang, Y.
Publikováno v:
A&A 686, L12 (2024)
We report on the detection of X-ray polarisation in the black-hole X-ray binary Swift J1727.8$-$1613 during its dim hard spectral state by the Imaging X-ray Polarimetry Explorer (IXPE). This is the first detection of X-ray polarisation at the transit
Externí odkaz:
http://arxiv.org/abs/2404.19601
We present 20 epochs of optical spectroscopy obtained with the GTC-10.4m telescope across the bright discovery outburst of the black hole candidate Swift J1727.8-162. The spectra cover the main accretion states and are characterised by the presence o
Externí odkaz:
http://arxiv.org/abs/2401.04107
Autor:
Sánchez-Sierras, J., Muñoz-Darias, T., Motta, S. E., Fender, R. P., Bahramian, A., Martínez-Sebastián, C., Fernández-Ontiveros, J. A., Casares, J., Padilla, M. Armas, Green, D. A., Sánchez, D. Mata, Strader, J., Torres, M. A. P.
The black hole transient GRS 1915+105 entered a new phase of activity in 2018, generally characterised by low X-ray and radio fluxes. This phase has been only interrupted by episodes of strong and variable radio emission, during which high levels of
Externí odkaz:
http://arxiv.org/abs/2311.12933
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:
Cúneo, V. A., Casares, J., Padilla, M. Armas, Sánchez-Sierras, J., Corral-Santana, J. M., Maccarone, T. J., Sánchez, D. Mata, Muñoz-Darias, T., Torres, M. A. P., Vincentelli, F.
Among the sample of Galactic transient X-ray binaries (SXTs) discovered to date, about 70 have been proposed as likely candidates to host a black hole. Yet, only 19 have been dynamically confirmed. Such a reliable confirmation requires phase-resolved
Externí odkaz:
http://arxiv.org/abs/2310.17693
Autor:
Anitra, A., Sanchez, D. Mata, Munoz-Darias, T., Di Salvo, T., Iaria, R., Miceli, C., Padilla, M. Armas, Casares, J., Corral-Santana, J. M.
Swift J1357.2-0933 is a transient low-mass X-ray binary hosting a stellar-mass black hole. The source exhibits optical dips and very broad emission lines during both outburst and quiescence, which are thought to be the result of a high orbital inclin
Externí odkaz:
http://arxiv.org/abs/2310.12636
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