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We present a systematic survey of the temporal and spectral properties of all GRB X-ray afterglows observed by Swift-XRT between January 2005 and July 2007. We have constructed a catalog of all light curves and spectra and investigate the…

Astrophysics · Physics 2010-03-19 J. L. Racusin , E. -W. Liang , D. N. Burrows , D. C. Morris , B. B. Zhang , B. Zhang

The X-Ray Telescope (XRT) onboard the Hinode satellite, launched 23 September 2006 by the Japanese Aerospace Exploration Agency (JAXA) is a joint mission between Japan, the United States, and the United Kingdom to study the solar corona. In…

Instrumentation and Methods for Astrophysics · Physics 2014-08-27 Adam R. Kobelski , Steven H. Saar , Mark A. Weber , David E. McKenzie , Katharine K. Reeves

We present a search for sterile neutrino dark matter decay signals in the Milky Way's dark matter halo by considering the entirety of the Swift-XRT data archive. After filtering the raw archive, we analyze a $\sim$77 Ms data set containing…

High Energy Astrophysical Phenomena · Physics 2022-12-14 Dominic Sicilian , Dannell Lopez , Massimo Moscetti , Esra Bulbul , Nico Cappelluti

On 2014 April 23, the Swift satellite detected a gamma-ray superflare from the nearby star system DG CVn. This system comprises a M-dwarf binary with extreme properties: it is very young and at least one of the components is a very rapid…

High Energy Astrophysical Phenomena · Physics 2015-06-23 R. P. Fender , G. E. Anderson , R. Osten , T. Staley , C. Rumsey , K. Grainge , R. D. E. Saunders

We present Swift observations of 31 sources from the SMS4 catalog, a sample of 137 bright radio sources in the Southern Hemisphere. All these sources had no Chandra or XMM-Newton observations: 24 of these were observed with Swift through a…

High Energy Astrophysical Phenomena · Physics 2022-10-17 Alessandro Maselli , William R. Forman , Christine Jones , Ralph P. Kraft , Matteo Perri

We report on the first multi-wavelength Swift monitoring campaign performed on SDSS J164100.10+345452.7, a nearby narrow-line Seyfert 1 galaxy formerly known as radio quiet which was recently detected both in the radio (at 37 GHz) and in…

We studied the spectral changes of the high-mass X-ray binary system LMC X-4 to understand the origin and mechanisms beyond its super-orbital modulation (30.4 days). To this aim, we obtained a monitoring campaign with Swift/XRT (0.3-10 keV)…

High Energy Astrophysical Phenomena · Physics 2022-03-30 Elena Ambrosi , Antonino d'Aì , Melania del Santo , Alberto Segreto , Carlo Ferrigno , Roberta Amato , Giancarlo Cusumano

We observed the massive binary stellar system of Eta Carinae in the 0.3-10 keV energy range with the X-ray Telescope onboard the Swift satellite during the period 15 December 2008 - 11 March 2009, i.e. 1 month before to 2 months after the…

The Hard X-ray Modulation Telescope (HXMT) is a broad band X-ray astronomical satellite from 1 to 250 keV. Understanding the X-ray background in detail will help to achieve a good performance of the instrument. In this work, we make use of…

Instrumentation and Methods for Astrophysics · Physics 2015-11-11 Fei Xie , Juan Zhang , Li-Ming Song , Shao-Lin Xiong , Ju Guan

Spectral analysis of X-ray emission from ejecta in supernova remnants (SNRs) is hampered by the low spectral resolution of CCD cameras, which creates a degeneracy between the best-fit values of abundances and emission measure. The combined…

High Energy Astrophysical Phenomena · Physics 2020-07-01 Emanuele Greco , Jacco Vink , Marco Miceli , Salvatore Orlando , Vladimir Domcek , Ping Zhou , Fabrizio Bocchino , Giovanni Peres

We use Swift/BAT Earth occultation data at different geomagnetic latitudes to derive a sensitive measurement of the Cosmic X-ray background (CXB) and of the Earth albedo emission in the 15--200 keV band. We compare our CXB spectrum with…

We demonstrate a simple and robust high-resolution ghost spectroscopy approach for x-ray and extreme ultraviolet absorption spectroscopy at free-electron laser sources. Our approach requires an on-line spectrometer before the sample and a…

SVOM, the Space-based Variable astronomical Object Monitor, launched on June 22nd 2024, is a Chinese-French mission focused on exploring the brightest phenomena in the cosmos - Gamma-Ray Bursts. Among the four instruments on board is the…

Instrumentation and Methods for Astrophysics · Physics 2025-06-26 Clara Plasse , Diego Götz , Aline Meuris , Miguel Fernandez Moita , Philippe Ferrando , Leo Favier , Francesco Ceraudo

(Abridged) We present a spectral analysis of a new, flux-limited sample of 72 X-ray selected clusters of galaxies identified with the X-ray Telescope (XRT) on board the Swift satellite down to a flux limit of ~10-14 erg/s/cm2 (SWXCS, Tundo…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-24 P. Tozzi , A. Moretti , E. Tundo , T. Liu , P. Rosati , S. Borgani , G. Tagliaferri , S. Campana , D. Fugazza , P. D'Avanzo

We report on the detailed study of the 2008 October outburst from the anomalous X-ray pulsar (AXP) 1E 1547.0-5408 discovered through the Swift/Burst Alert Telescope (BAT) detection of SGR-like short X-ray bursts on 2008 October 3. The…

X-ray Thomson scattering (XRTS) is a common diagnostic used in the warm dense matter (WDM) regime to estimate plasma parameters like density, temperature and charge state. Experimental analysis typically relies on a forward model to obtain…

We present Surf-NeRF, a modified implementation of the recently introduced Shadow Neural Radiance Field (S-NeRF) model. This method is able to synthesize novel views from a sparse set of satellite images of a scene, while accounting for the…

Computer Vision and Pattern Recognition · Computer Science 2023-04-19 Federico Semeraro , Yi Zhang , Wenying Wu , Patrick Carroll

In this paper, we present Sloan Digital Sky Survey (SDSS) photometry and spectroscopy in the fields of 24 gamma-ray bursts (GRBs) observed by Swift, including bursts localized by Swift, HETE-2, and INTEGRAL, after December 2004. After this…

To take advantage of high-resolution optics sensitive to a broad energy range, future X-ray imaging instruments will require thick detectors with small pixels. This pixel aspect ratio affects spectral response in the soft X-ray band, vital…

The soft X-ray imager (SXI) on the SMILE mission uses two large 4510x4510 back illuminated CCD370s to detect X-rays in the 0.2-2 keV range. These devices take heritage from the optical imaging PLATO mission CCD270s and have been optimised…

Instrumentation and Detectors · Physics 2022-10-26 S. Parsons , D. Hall , T. Buggey , A. Holland , P. Verhoeve