Zobrazeno 1 - 10
of 806
pro vyhledávání: '"D'Amico N."'
Autor:
Burderi, L., Sanna, A., Di Salvo, T., Amati, L., Amelino-Camelia, G., Branchesi, M., Capozziello, S., Coccia, E., Colpi, M., Costa, E., D'Amico, N., De Bernardis, P., De Laurentis, M., Della Valle, M., Falcke, H., Feroci, M., Fiore, F., Frontera, F., Gambino, A. F., Ghisellini, G., Hurley, K., Iaria, R., Kataria, D., Labanti, C., Lodato, G., Negri, B., Papitto, A., Piran, T., Riggio, A., Rovelli, C., Santangelo, A., Vidotto, F., Zane, S.
GrailQuest (Gamma Ray Astronomy International Laboratory for QUantum Exploration of Space-Time) is a mission concept based on a constellation (hundreds/thousands) of nano/micro/small-satellites in low (or near) Earth orbits. Each satellite hosts a no
Externí odkaz:
http://arxiv.org/abs/1911.02154
Autor:
Gambino, A. F., Iaria, R., Di Salvo, T., Mazzola, S. M., Marino, A., Burderi, L., Riggio, A., Sanna, A., D'Amico, N.
Publikováno v:
A&A 625, A92 (2019)
Context: XB 1916-053 is a low mass X-ray binary system (LMXB) hosting a neutron star (NS) and showing periodic dips. The spectrum of the persistent emission was modeled with a blackbody component having a temperature between 1.31 and 1.67 keV and wit
Externí odkaz:
http://arxiv.org/abs/1904.05770
Autor:
Mazzola, S. M., Iaria, R., Di Salvo, T., Del Santo, M., Sanna, A., Gambino, A. F., Riggio, A., Segreto, A., Burderi, L., Santangelo, A., D'Amico, N.
Publikováno v:
A&A 621, A89 (2019)
Most of the X-ray binary systems containing neutron stars classified as Atoll sources show two different spectral states, called soft and hard. Moreover, a large number of these systems show a reflection component relativistically smeared in their sp
Externí odkaz:
http://arxiv.org/abs/1811.10922
Autor:
Abbate, F., Possenti, A., Ridolfi, A., Freire, P. C. C., Camilo, F., Manchester, R. N., D'Amico, N.
Despite considerations of mass loss from stellar evolution suggesting otherwise, the content of gas in globular clusters seems poor and hence its measurement very elusive. One way of constraining the presence of ionized gas in a globular cluster is t
Externí odkaz:
http://arxiv.org/abs/1808.06621
Autor:
Iaria, R., Mazzola, S. M., Bassi, T., Gambino, A. F., Marino, A., Di Salvo, T., Sanna, A., Riggio, A., Burderi, L., D'Amico, N.
Publikováno v:
A&A 630, A138 (2019)
The X-ray transient eclipsing source MXB 1659-298 went into outburst in 1999 and 2015. During these two outbursts the source was observed by XMM-Newton, nuSTAR, and Swift/XRT. Using these observations, we studied the broadband spectrum of the source
Externí odkaz:
http://arxiv.org/abs/1807.11431
Autor:
Sanna, A., Bozzo, E., Papitto, A., Riggio, A., Ferrigno, C., Di Salvo, T., Iaria, R., Mazzola, S. M., D'Amico, N., Burderi, L.
We report on the detection of X-ray pulsations at 2.1 ms from the known X-ray burster IGR J17379-3747 using XMM-Newton. The coherent signal shows a clear Doppler modulation from which we estimate an orbital period of ~1.9 hours and a projected semi-m
Externí odkaz:
http://arxiv.org/abs/1807.08574
Autor:
Ridolfi, A., Freire, P. C. C., Kramer, M., Bassa, C. G., Camilo, F., D'Amico, N., Desvignes, G., Heinke, C. O., Jordan, C., Lorimer, D. R., Lyne, A., Manchester, R. N., Pan, Z., Sarkissian, J., Torne, P., Berg, M. van den, Venkataraman, A., Wex, N.
Multi-decade observing campaigns of the globular clusters 47 Tucanae and M15 have led to an outstanding number of discoveries. Here, we report on the latest results of the long-term observations of the pulsars in these two clusters. For most of the p
Externí odkaz:
http://arxiv.org/abs/1711.06086
Autor:
Sanna, A., Bahramian, A., Bozzo, E., Heinke, C., Altamirano, D., Wijnands, R., Degenaar, N., Maccarone, T., Riggio, A., Di Salvo, T., Iaria, R., Burgay, M., Possenti, A., Ferrigno, C., Papitto, A., Sivakoff, G., D'Amico, N., Burderi, L.
Publikováno v:
A&A 610, L2 (2018)
We report the discovery of X-ray pulsations at 105.2 Hz (9.5 ms) from the transient X-ray binary IGR J16597-3704 using NuSTAR and Swift. The source was discovered by INTEGRAL in the globular cluster NGC 6256 at a distance of 9.1 kpc. The X-ray pulsat
Externí odkaz:
http://arxiv.org/abs/1711.03092
Autor:
Freire, P. C. C., Ridolfi, A., Kramer, M., Jordan, C., Manchester, R. N., Torne, P., Sarkissian, J., Heinke, C. O., D'Amico, N., Camilo, F., Lorimer, D. R., Lyne, A. G.
This paper is the second in a series where we report the results of the long-term timing of the millisecond pulsars (MSPs) in 47 Tucanae with the Parkes 64-m radio telescope. We obtain improved timing parameters that provide additional information fo
Externí odkaz:
http://arxiv.org/abs/1706.04908
Autor:
Prandoni, I., Murgia, M., Tarchi, A., Burgay, M., Castangia, P., Egron, E., Govoni, F., Pellizzoni, A., Ricci, R., Righini, S., Bartolini, M., Casu, S., Corongiu, A., Iacolina, M. N., Melis, A., Nasir, F. T., Orlati, A., Perrodin, D., Poppi, S., Trois, A., Vacca, V., Zanichelli, A., Bachetti, M., Buttu, M., Comoretto, G., Concu, R., Fara, A., Gaudiomonte, F., Loi, F., Migoni, C., Orfei, A., Pilia, M., Bolli, P., Carretti, E., D'Amico, N., Guidetti, D., Loru, S., Massi, F., Pisanu, T., Porceddu, I., Ridolfi, A., Serra, G., Stanghellini, C., Tiburzi, C., Tingay, S., Valente, G.
Publikováno v:
A&A 608, A40 (2017)
[Abridged] The Sardinia Radio Telescope (SRT) is the new 64-m dish operated by INAF (Italy). Its active surface will allow us to observe at frequencies of up to 116 GHz. At the moment, three receivers, one per focal position, have been installed and
Externí odkaz:
http://arxiv.org/abs/1703.09673