Results 51 to 60 of about 77,058 (202)

A wide-field X-ray search for the Geminga pulsar halo with SRG/ART-XC

Astronomy & Astrophysics
Searches for the putative large-scale X-ray halo around the Geminga pulsar have been extensively performed using various narrow field-of-view X-ray telescopes. In this paper, we present wide-field scanning observation of Geminga with SRG/ART-XC.
Krivonos Roman, Manconi Silvia, Arefiev Vadim, Bykov Andrei, Donato Fiorenza, Filippova Ekaterina, Lutovinov Alexander, Di Mauro Mattia, Mori Kaya, Tkachenko Alexey, Woo Jooyun   +10 more
doaj   +1 more source

Estimating Ejecta Mass Ratios in Kepler’s Supernova Remnant: Global X-Ray Spectral Analysis Including Suzaku Systematics and Emitting Volume Uncertainties

The Astrophysical Journal, 2023
The exact origins of many Type Ia supernovae—progenitor scenarios and explosive mechanisms—remain uncertain. In this work, we analyze the global Suzaku X-ray spectrum of Kepler’s supernova remnant (SNR) in order to constrain the mass ratios of various ...
Tyler Holland-Ashford, Patrick Slane, Laura A. Lopez, Katie Auchettl, Vinay Kashyap   +4 more
doaj   +1 more source

TheSwiftX-ray Telescope Cluster Survey [PDF]

Astronomy & Astrophysics, 2014
(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 et al. 2012).
Tozzi, P., Moretti, A., Tundo, E., Liu, T., Rosati, P., BORGANI, STEFANO, Tagliaferri, G., Campana, S., Fugazza, D., D'Avanzo, P.   +9 more
openaire   +3 more sources

Machine Learning Applied to X-Ray Spectra: Separating Stars in Orion Nebula Cluster from Active Galactic Nuclei in CDFS

The Astrophysical Journal, 2023
Modern X-ray telescopes have detected hundreds of thousands of X-ray sources in the universe. However, current methods to classify these sources using the X-ray data themselves suffer problems—detailed X-ray spectroscopy of individual sources is too time
Pavan R. Hebbar, Craig O. Heinke
doaj   +1 more source

A High Resolution Intergalactic Explorer for the Soft X-ray/FUV

, 2003
We present a mission concept for high resolution X-ray spectroscopy with a resolving power, R~6000, (c.f. R=
Elvis, Martin, Fiore, Fabrizio, Team, the CWE   +2 more
core   +1 more source

A Systematic Study of Inverting Overlappograms: MaGIXS—A Case Study

The Astrophysical Journal
Slitless (or wide-field) imaging spectroscopy provides simultaneous imaging and spectral information from a wide field of view, allowing for rapid spectroscopic data collection from extended sources. Depending on the size of the extended source, combined
P. S. Athiray, Arthur Hochedez, Amy R. Winebarger, Dyana Beabout   +3 more
doaj   +1 more source

Development of thermally formed glass optics for astronomical hard x-ray telescopes [PDF]

, 2000
The next major observational advance in hard X-ray/soft gamma-ray astrophysics will come with the implementation of telescopes capable of focusing 10-200 keV radiation.
Christensen, Finn E., Craig, William W., Hailey, Charles J., Harrison, Fiona A., Hussain, Ahsen M., Jimenez-Garate, Mario, Mao, Peter H., Windt, David L.   +7 more
core  

Gamma rays from compact binary system

, 2008
Some of the very high energy (VHE) gamma-ray sources detected with the modern generation of Cherenkov telescopes have been identified with previously known X-ray binary systems.
Felix A. Aharonian, Frank Rieger, Josep M. Paredes, Werner Hofmann   +3 more
core   +1 more source

Modeling X-ray Emission Line Profiles from Massive Star Winds - A Review [PDF]

, 2016
The Chandra and XMM-Newton X-ray telescopes have led to numerous advances in the study and understanding of astrophysical X-ray sources. Particularly important has been the much increased spectral resolution of modern X-ray instrumentation.
Ignace, Richard
core   +3 more sources

Mitigating Polarization Leakage in Gas Pixel Detectors through Hybrid Machine Learning and Analytic Event Reconstruction

The Astrophysical Journal
Spatially resolved polarization measurements of extended X-ray sources are expanding our understanding of the emission mechanisms and magnetic field properties involved.
Nicoló Cibrario, Michela Negro, Raffaella Bonino, Nikita Moriakov, Luca Baldini, Niccoló Di Lalla, Alessandro Di Marco, Sergio Fabiani, Andrea Frassá, Alessio Gorgi, Fabio La Monaca, Luca Latronico, Simone Maldera, Alberto Manfreda, Fabio Muleri, Nicola Omodei, John Rankin, Carmelo Sgró, Stefano Silvestri, Paolo Soffitta, Stefano Tugliani   +20 more
doaj   +1 more source