Zobrazeno 1 - 10
of 578
pro vyhledávání: '"Malzac J."'
Autor:
Petrucci, P. O., Piétu, V., Behar, E., Clavel, M., Bianchi, S., Henri, G., Barnier, S., Chen, S., Ferreira, J., Malzac, J., Belmont, R., Corbel, S., Coriat, M.
Most of the Active Galactic Nuclei (AGN) are radio-quiet (RQ) and, differently from radio-loud (RL) AGN, do not show signature of large-scale and powerful jets. The physical origin of their radio emission remains then broadly unclear. The observation
Externí odkaz:
http://arxiv.org/abs/2309.01804
Autor:
Vincentelli, F. M., Casella, P., Borghese, A., Cavecchi, Y., Mastroserio, G., Stella, L., Altamirano, D., Padilla, M. Armas, Baglio, M. C., Belloni, T. M., Casares, J., Cúneo, V. A., Degenaar, N., Trigo, M. Díaz, Fender, R., Maccarone, T., Malzac, J., Sánchez, D. Mata, Middleton, M., Migliari, S., Muñoz-Darias, T., O'Brien, K., Panizo-Espinar, G., Sánchez-Sierras, J., Russell, D. M., Uttley, P.
We report on the first simultaneous high-time resolution X-ray and infrared (IR) observations of a neutron star low mass X-ray binary in its hard state. We performed $\approx 2\,$h of simultaneous observations of 4U 1728-34 using HAWK-I@VLT, XMM-Newt
Externí odkaz:
http://arxiv.org/abs/2308.15570
Autor:
Del Santo, M., Pinto, C., Marino, A., D'Aì, A., Petrucci, P. -O., Malzac, J., Ferreira, J., Pintore, F., Motta, S. E., Russell, T. D., Segreto, A., Sanna, A.
The transient X-ray source MAXI J1810-222 was discovered in 2018 and has been active ever since. A long combined radio and X-ray monitoring campaign was performed with ATCA and Swift respectively. It has been proposed that MAXI J1810-222 is a relativ
Externí odkaz:
http://arxiv.org/abs/2304.08514
Autor:
Marcel, G., Ferreira, J., Petrucci, P-O., Barnier, S., Malzac, J., Marino, A., Coriat, M., Clavel, M., Reynolds, C., Neilsen, J., Belmont, R., Corbel, S.
Publikováno v:
A&A 659, A194 (2022)
The spectral evolution of transient X-ray binaries can be reproduced by an interplay between two flows separated at a radius $R_J$: a standard accretion disk (SAD) in the outer parts and a jet-emitting disk (JED) in the inner parts. In the previous p
Externí odkaz:
http://arxiv.org/abs/2109.13592
Autor:
Barnier, S., Petrucci, P. -O., Ferreira, J., Marcel, G., Belmont, R., Clavel, M., Corbel, S., Coriat, M., Espinasse, M., Henri, G., Malzac, J., Rodriguez, J.
Publikováno v:
A&A 657, A11 (2022)
Understanding the mechanisms of accretion-ejection during X-ray binaries outbursts has been a problem for several decades. It is still not clear yet what controls the spectral evolution of these objects from the hard to the soft states and then back
Externí odkaz:
http://arxiv.org/abs/2109.02895
Autor:
Marino, A., Barnier, S., Petrucci, P. O., Del Santo, M., Malzac, J., Ferreira, J., Marcel, G., Segreto, A., Motta, S. E., D'Aì, A., Di Salvo, T., Guillot, S., Russell, T. D.
Publikováno v:
A&A 656, A63 (2021)
X-ray binaries in outburst typically show two canonical X-ray spectral states, i.e. hard and soft states, in which the physical properties of the accretion flow and of the jet are known to change. Recently, the JED-SAD paradigm has been proposed for
Externí odkaz:
http://arxiv.org/abs/2109.00218
The Evolution of Rapid Optical/X-ray Timing Correlations in the Initial Hard State of MAXI J1820+070
Autor:
Paice, J. A., Gandhi, P., Shahbaz, T., Veledina, A., Malzac, J., Buckley, D. A. H., Charles, P. A., Rajwade, K., Dhillon, V. S., Littlefair, S. P., Marsh, T. R., Uttley, P., Vincentelli, F. M., Misra, R.
We report on a multi-epoch campaign of rapid optical/X-ray timing observations of the superbright 2018 outburst of MAXI J1820+070, a black hole low-mass X-ray binary system. The observations spanned 80 days in the initial hard-state, and were taken w
Externí odkaz:
http://arxiv.org/abs/2105.11769
Autor:
Motta, S. E., Rodriguez, J., Jourdain, E., Del Santo, M., Belanger, G., Cangemi, F., Grinberg, V., Kajava, J. J. E., Kuulkers, E., Malzac, J., Pottschmidt, K., Roques, J. P., Sanchez-Fernandez, C., Wilms, J.
INTEGRAL is an ESA mission in fundamental astrophysics that was launched in October 2002. It has been in orbit for over 18 years, during which it has been observing the high-energy sky with a set of instruments specifically designed to probe the emis
Externí odkaz:
http://arxiv.org/abs/2105.05547
Autor:
Petrucci, P. -O., Bianchi, S., Ponti, G., Ferreira, J., Marcel, G., Cangemi, F., Chakravorty, S., Clavel, M., Malzac, J., Rodriguez, J., Barnier, S., Belmont, R., Corbel, S., Coriat, M., Henri, G.
Blueshifted X-ray absorption lines (preferentially from Fe XXV and Fe XXVI present in the 6-8 keV range) indicating the presence of massive hot disk winds in Black Hole (BH) X-ray binaries (XrB) are most generally observed during the soft states. It
Externí odkaz:
http://arxiv.org/abs/2103.04601
Autor:
Vincentelli, F. M., Casella, P., Russell, D., Baglio, M. C., Veledina, A., Maccarone, T., Malzac, J., Fender, R., O'Brien, K., Uttley, P.
We present the results regarding the analysis of the fast X-ray/infrared (IR) variability of the black-hole transient MAXI J1535$-$571. The data studied in this work consist of two strictly simultaneous observations performed with XMM-Newton (X-rays:
Externí odkaz:
http://arxiv.org/abs/2102.06710