Zobrazeno 1 - 10
of 21
pro vyhledávání: '"A M, Matranga"'
Autor:
Fabio Pintore, Alessandro Riggio, Andrea Sanna, Luciano Burderi, M. Matranga, Angelo Gambino, R. Iaria, Tiziana Di Salvo
Publikováno v:
NASA Astrophysics Data System
XB 1254-690 is a dipping low mass X-ray binary system hosting a neutron star and showing type I X-ray bursts. We aim at obtaining more accurate orbital ephemeris and at constraining the orbital period derivative of the system for the first time. In a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d74b62c969aefcd1987fa60dadb40f9
http://hdl.handle.net/10447/244704
http://hdl.handle.net/10447/244704
Autor:
T. Di Salvo, Alessandro Riggio, Luciano Burderi, M. Matranga, R. Iaria, Andrea Sanna, Angelo Gambino
Context. High-resolution X-ray spectra of neutron star low-mass X-ray binaries (LMXBs) in the energy range 6.4-6.97 keV are often characterized by the presence of K alpha transition features of iron at different ionization stages. Since these lines a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce0ec3373d42aaadb7f25f08d2f96f3d
https://resolver.caltech.edu/CaltechAUTHORS:20170105-131100985
https://resolver.caltech.edu/CaltechAUTHORS:20170105-131100985
Autor:
Andrea Sanna, Angelo Gambino, A. Marino, T. Di Salvo, A. Riggio, Luciano Burderi, M. Matranga, R. Iaria
Context. In 1998 the first accreting millisecond pulsar, SAX J1808.4-3658, was discovered and to date 18 systems showing coherent, high frequency (> 100 Hz) pulsations in low mass X-ray binaries are known. Since their discovery, this class of sources
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::405a1a78a1b21af4e792821758fd61c5
http://hdl.handle.net/20.500.12386/26841
http://hdl.handle.net/20.500.12386/26841
Autor:
F. Scarano, A. Riggio, T. Di Salvo, Andrea Sanna, Antonino D'Ai, Luciano Burderi, M. Matranga, R. Iaria, Angelo Gambino
Publikováno v:
NASA Astrophysics Data System
MXB 1659-298 is a transient neutron star Low-Mass X-ray binary system that shows eclipses with a periodicity of 7.1 hr. The source went to outburst in August 2015 after 14 years of quiescence. We investigate the orbital properties of this source with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f30919302a04015c019c4a9142f09c7
Publikováno v:
Rose, S J, Matranga, M, Mathioudakis, M, Keenan, F P & Wark, J S 2008, ' Line intensity enhancements in stellar coronal X-ray spectra due to opacity effects ', Astronomy and Astrophysics, vol. 483, pp. 887-890 . https://doi.org/10.1051/0004-6361:20079040
Context. The I(15.01 A)/I(16.78 A) emission line intensity ratio in Fe XVII has been reported to deviate from its theoretical value in solar and stellar X-ray spectra. This is attributed to opacity in the 15.01 A line, leading to a reduction in its i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7310de319e7cacbda74e4f67d82562c2
https://ora.ox.ac.uk/objects/uuid:5d98497e-43d0-45f2-8208-301014f215a7
https://ora.ox.ac.uk/objects/uuid:5d98497e-43d0-45f2-8208-301014f215a7
Autor:
Fabio Pintore, A. Sanna, R. Iaria, Angelo Gambino, T. Di Salvo, A. Riggio, M. Del Santo, Luciano Burderi, M. Matranga
Publikováno v:
NASA Astrophysics Data System
4U 1323-619 is a low mass X-ray binary system that shows type I X-ray bursts and dips. The most accurate estimation of the orbital period is 2.941923(36) hrs and a distance from the source that is lower than 11 kpc has been proposed. We aim to obtain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4702972ec1347dda57d0913d1db55a0c
http://hdl.handle.net/10447/179094
http://hdl.handle.net/10447/179094
Autor:
Alessandro Riggio, Andrea Sanna, T. Di Salvo, F. Scarano, F. Pintore, Angelo Gambino, R. Iaria, Luciano Burderi, M. Matranga
Publikováno v:
NASA Astrophysics Data System
We report on the timing analysis of the 2015 outburst of the intermittent accreting millisecond X-ray pulsar SAX J1748.9-2021 observed on March 4 by the X-ray satellite XMM-Newton. By phase-connecting the time of arrivals of the observed pulses, we d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::faa4bb6da9cce21b0190c6063e06e136
Autor:
R. Iaria, Luciano Burderi, M. Matranga, A. Riggio, M. Del Santo, A. Sanna, Fabio Pintore, F. Scarano, P. Romano, C. G. Galiano, Angelo Gambino, T. Di Salvo
The ultra-compact dipping source \object{XB 1916-053} has an orbital period of close to 50 min and a companion star with a very low mass (less than 0.1 M$_{\odot}$). The orbital period derivative of the source was estimated to be $1.5(3) \times 10^{-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ca78c50655c53a5fb90026c2992dad9
http://hdl.handle.net/10447/154307
http://hdl.handle.net/10447/154307
Autor:
T. Di Salvo, Antonino D'Ai, Alessandro Riggio, Yoshihiro Ueda, R. Iaria, E. Egron, N. R. Robba, Alessandro Papitto, Luciano Burderi, M. Matranga
Iron emission lines at 6.4-6.97 keV, identified with Kalpha radiative transitions, are among the strongest discrete features in the X-ray band. These are one of the most powerful probes to infer the properties of the plasma in the innermost part of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b90e0d150171134b9519fcd1c8278c59
http://hdl.handle.net/10447/154300
http://hdl.handle.net/10447/154300
Autor:
Thomas Dauser, Javier A. García, Alessandro Riggio, Andrea Sanna, T. Di Salvo, A. D'Aì, Luciano Burderi, F. Pintore, M. Matranga, R. Iaria, N. R. Robba, C. G. Galiano, E. Bozzo
The bursting pulsar, GRO J1744-28, went again in outburst after $\sim$18 years of quiescence in mid-January 2014. We studied the broad-band, persistent, X-ray spectrum using X-ray data from a XMM-Newton observation, performed almost at the peak of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e6a2bf2f148a615b6b92df688e7abd4