M Del Santo

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The imager on board INTEGRAL (IBIS) presently provides the most detailed sky images ever obtained at energies above 30 keV. The telescope is based on a coded aperture imaging system which allows to obtain sky images in a large field of view (29 • × 29 •) with an angular resolution of 12 ′. The System Point Spread Function of the telescope and its detailed(More)
The Large Observatory For x-ray Timing (LOFT) was studied within ESA M3 Cosmic Vision framework and participated in the final downselection for a launch slot in 2022-2024. Thanks to the unprecedented combination of effective area and spectral resolution of its main instrument, LOFT will study the behaviour of matter under extreme conditions, such as the(More)
  • M Feroci, J W Den Herder, E Bozzo, D Barret, S Brandt, M Hernanz +494 others
  • 2016
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. ABSTRACT The Large Observatory For x-ray Timing (LOFT) was studied within ESA M3 Cosmic Vision framework and(More)
  • Citation Herder, Jan-Willem, Springer-Verlag, J W Den Herder, L Piro, T Ohashi +158 others
  • 2011
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract ORIGIN is a proposal for the M3 mission call of ESA aimed at the study of metal creation from the epoch of cosmic dawn. Using high-spectral resolution in the soft X-ray band, ORIGIN will be able to identify the physical conditions(More)
The X–ray transient XMMU J174716.1–281048 was serendipitously discovered with XMM-Newton in 2003. It lies about 0.9 degrees off the Galactic Centre and its spectrum shows a high absorption (∼8×10 22 cm −2). Previous X–ray observations of the source field performed in 2000 and 2001 did not detect the source, indicative of a quiescent emission at least two(More)
  • A Paizis, M A Nowak, S Chaty, J Rodriguez, J.-L Courvoisier, M Del Santo +4 others
  • 2008
We report on a Chandra grating observation of the recently discovered hard X-ray transient IGR J17497−2821. The observation took place about two weeks after the source discovery at a flux level of about 20 mCrab in the 0.8-8 keV range. We extracted the most precise X-ray position of IGR J17497−2821, α J2000 =17 h 49 m 38 s .037, δ J2000 =-28 • 21 ′ 17 ′′(More)
Context. In the last years, the persistent source 1E 1743.1–2843 has been observed in the X-rays, but never above 20 keV. In previous works, it was stressed that a possible high energy emission could give further indications on the accreting object nature which remains still unknown. Aims. We present here more than two years of 1E 1743.1–2843 monitoring(More)
SGR 1806–20 has been observed for more than 2 years with the INTEGRAL satellite. In this period the source went from a quiescent state into a very active one culminating in a giant flare on December 27, 2004. Here we report on the properties of all the short bursts detected with INTEGRAL before the giant flare. We derive their number-intensity distribution(More)
The Milky Way is known to be an abundant source of gamma-ray photons, now determined to be mainly diffuse in nature and resulting from interstellar processes. In the soft gamma-ray domain, point sources are expected to dominate, but the lack of sensitive high-resolution observations did not allow for a clear estimate of the contribution from such sources.(More)