Zobrazeno 1 - 10
of 1 760
pro vyhledávání: '"Motta S"'
Autor:
Mastroserio, G., De Marco, B., Baglio, M. C., Carotenuto, F., Fabiani, S., Russell, T. D., Capitanio, F., Cavecchi, Y., Motta, S., Russell, D. M., Dovciak, M., Del Santo, M., Alabarta, K., Ambrifi, A., Campana, S., Casella, P., Covino, S., Illiano, G., Kara, E., Lai, E. V., Lodato, G., Manca, A., Mariani, I., Marino, A., Miceli, C., Saikia, P., Shaw, A. W., Svoboda, J., Vincentelli, F. M., Wang, J.
We present the first X-ray polarization measurements of GX 339-4. IXPE observed this source twice during its 2023-2024 outburst, once in the soft-intermediate state and again during a soft state. The observation taken during the intermediate state sh
Externí odkaz:
http://arxiv.org/abs/2408.06856
Autor:
Gasealahwe, K. V. S., Monageng, I. M., Fender, R. P., Woudt, P. A., Hughes, A. K., Motta, S. E., Eijnden, J. van den, Saikia, P., Tremou, E.
XTE J1701-462 is a neutron star low mass X-ray binary (NS LMXB) discovered in 2006 as the first system to demonstrate unambiguously that the `Atoll' and `Z' classes of accreting neutron stars are separated by accretion rate. Radio observations during
Externí odkaz:
http://arxiv.org/abs/2407.21509
Autor:
Eijnden, J. van den, Mohamed, S., Carotenuto, F., Motta, S., Saikia, P., Williams-Baldwin, D. R. A.
Massive stars that travel at supersonic speeds can create bow shocks as their stellar winds interact with the surrounding interstellar medium. These bow shocks - prominent sites for mechanical feedback of individual massive stars - are predominantly
Externí odkaz:
http://arxiv.org/abs/2407.00380
Autor:
Sacchi, A., Imbrogno, M., Motta, S. E., Esposito, P., Israel, G. L., Vago, N. O. Pinciroli, De Luca, A., Marelli, M., Pintore, F., Castillo, G. A. Rodríguez, Salvaterra, R., Tiengo, A.
Publikováno v:
A&A 689, A217 (2024)
We report on the multi-year evolution of the population of X-ray sources in the nuclear region of NGC 3621 based on Chandra, XMM-Newton and Swift observations. Among these, two sources, X1 and X5, after their first detection in 2008, seem to have fad
Externí odkaz:
http://arxiv.org/abs/2407.00150
Autor:
Gandhi, P., Borowski, E. S., Byrom, J., Hynes, R. I., Maccarone, T. J., Shaw, A. W., Adegoke, O. K., Altamirano, D., Baglio, M. C., Bhargava, Y., Britt, C. T., Buckley, D. A. H., Buisson, D. J. K., Casella, P., Segura, N. Castro, Charles, P. A., Corral-Santana, J. M., Dhillon, V. S., Fender, R., Gúrpide, A., Heinke, C. O., Igl, A. B., Knigge, C., Markoff, S., Mastroserio, G., McCollough, M. L., Middleton, M., Miller, J. M., Miller-Jones, J. C. A., Motta, S. E., Paice, J. A., Pawar, D. D., Plotkin, R. M., Pradhan, P., Ressler, M. E., Russell, D. M., Russell, T. D., Santos-Sanz, P., Shahbaz, T., Sivakoff, G. R., Steeghs, D., Tetarenko, A. J., Tomsick, J. A., Vincentelli, F. M., George, M., Gurwell, M., Rao, R.
We present mid-infrared (MIR) spectral-timing measurements of the prototypical Galactic microquasar GRS 1915+105. The source was observed with the Mid-Infrared Instrument (MIRI) onboard JWST in June 2023 at a MIR luminosity L(MIR)~10^{36} erg/s excee
Externí odkaz:
http://arxiv.org/abs/2406.18637
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:
Giarratana, S., Salafia, O. S., Giroletti, M., Ghirlanda, G., Rhodes, L., Atri, P., Marcote, B., Yang, J., An, T., Anderson, G., Bright, J. S., Farah, W., Fender, R., Leung, J. K., Motta, S. E., Pérez-Torres, M., van der Horst, A. J.
Publikováno v:
A&A 690, A74 (2024)
We observed $\gamma$-ray burst (GRB) 221009A using very long baseline interferomety (VLBI) with the European VLBI Network (EVN) and the Very Long Baseline Array (VLBA), over a period spanning from 40 to 262 days after the initial GRB. The high angula
Externí odkaz:
http://arxiv.org/abs/2311.05527
Autor:
Marino, A., Russell, T. D., Del Santo, M., Beri, A., Sanna, A., Zelati, F. Coti, Degenaar, N., Altamirano, D., Ambrosi, E., Anitra, A., Carotenuto, F., D'Ai, A., Di Salvo, T., Manca, A., Motta, S. E., Pinto, C., Pintore, F., Rea, N., Eijnden, J. Van den
The accretion flow / jet correlation in neutron star (NS) low-mass X-ray binaries (LMXBs) is far less understood when compared to black hole (BH) LMXBs. In this paper we will present the results of a dense multi-wavelength observational campaign on t
Externí odkaz:
http://arxiv.org/abs/2307.16566
Autor:
Motta, S. E., Belloni, T. M.
Context. The study of Quasi-Periodic Oscillations (QPO) at low and high frequency in the variability of the high-energy emission from black-hole binaries and their physical interpretation in terms of signatures of General Relativity in the strong-fie
Externí odkaz:
http://arxiv.org/abs/2307.00867
Autor:
Baglio, M. C., Zelati, F. Coti, Campana, S., Busquet, G., D'Avanzo, P., Giarratana, S., Giroletti, M., Ambrosino, F., Crespi, S., Zanon, A. Miraval, Hou, X., Li, D., Li, J., Wang, P., Russell, D. M., Torres, D. F., Alabarta, K., Casella, P., Covino, S., Bramich, D. M., de Martino, D., Méndez, M., Motta, S. E., Papitto, A., Saikia, P., Vincentelli, F.
Publikováno v:
A&A 677, A30 (2023)
Transitional millisecond pulsars are an emerging class of sources that link low-mass X-ray binaries to millisecond radio pulsars in binary systems. These pulsars alternate between a radio pulsar state and an active low-luminosity X-ray disc state. Du
Externí odkaz:
http://arxiv.org/abs/2305.14509