Academic literature on the topic 'X-ray polarimetry, calibration'

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Journal articles on the topic "X-ray polarimetry, calibration"

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Ramsey, Brian D., Jeffery K. Kolodziejczak, Wayne H. Baumgartner, et al. "The Telescope Calibration of the Imaging X-Ray Polarimetry Explorer." Astronomical Journal 170, no. 1 (2025): 5. https://doi.org/10.3847/1538-3881/add327.

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Abstract Fifty years after the very first sounding rocket measurement of cosmic X-ray polarization, the Imaging X-ray Polarimetry Explorer (IXPE) mission has effectively opened a new window into the X-ray sky. Prior to launch of IXPE, an extensive calibration campaign was carried out to fully characterize the response of this new type of instrument. Specifically, the polarization-sensitive detectors were intensively calibrated in Italy, where they were developed and built. The X-ray optics, which collect and focus X-rays onto the detectors, were built and calibrated in the USA. A key question
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Alimenti, Andrea, Fabrizio Cologgi, Sergio Fabiani, et al. "Design and Test of a Calibration System for Avalanche Photodiodes Used in X-Ray Compton Polarimeters for Space." Sensors 24, no. 24 (2024): 8016. https://doi.org/10.3390/s24248016.

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The development and calibration of a measurement system designed for assessing the performance of the avalanche photodiodes (APDs) used in the Compton scattering polarimeter of the CUSP project is discussed in this work. The designed system is able to characterize the APD gain GAPD and energy resolution across a wide range of temperatures T (from −20 °C to +60 °C) and bias voltages Vbias (from 260 V to 410 V). The primary goal was to experimentally determine the GAPD dependence on the T and Vbias in order to establish a strategy for stabilizing GAPD by compensating for T fluctuations, acting o
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Di Marco, Alessandro, Sergio Fabiani, Fabio La Monaca, et al. "Calibration of the IXPE Focal Plane X-Ray Polarimeters to Polarized Radiation." Astronomical Journal 164, no. 3 (2022): 103. http://dx.doi.org/10.3847/1538-3881/ac7719.

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Abstract The Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer mission—in partnership with the Italian Space Agency—dedicated to X-ray polarimetry in the 2–8 keV energy band. The IXPE telescope comprises three grazing incidence mirror modules coupled to three detector units hosting each one a Gas Pixel Detector, a gas detector that allows measuring the polarization degree by using the photoelectric effect. A wide and accurate ground calibration was carried out on the IXPE Detector Units at INAF-IAPS, in Italy, where a dedicated facility was setup at this aim. In this paper, we
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Beilicke, M., F. Kislat, A. Zajczyk, et al. "Design and Performance of the X-ray Polarimeter X-Calibur." Journal of Astronomical Instrumentation 03, no. 02 (2014): 1440008. http://dx.doi.org/10.1142/s225117171440008x.

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X-ray polarimetry promises to give qualitatively new information about high-energy astrophysical sources, such as binary black hole systems, micro-quasars, active galactic nuclei, neutron stars, and gamma-ray bursts. We designed, built and tested a X-ray polarimeter, X-Calibur, to be used in the focal plane of the balloon-borne InFOCμS grazing incidence X-ray telescope. X-Calibur combines a low-Z scatterer with a Cadmium Zinc Telluride (CZT) detector assembly to measure the polarization of 20–80 keV X-rays making use of the fact that polarized photons scatter preferentially perpendicular to th
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Qi, Liqiang, Gang Li, Mingyu Ge, et al. "Implementation of the Polarimetry Focusing Telescope Array Observation Simulator on board the X-Ray Timing and Polarimetry Observatory." Astrophysical Journal 934, no. 2 (2022): 109. http://dx.doi.org/10.3847/1538-4357/ac7b82.

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Abstract An observation simulator is established, on an event-by-event basis, for the Polarimetry Focusing telescope Array (PFA) on board the planned enhanced X-ray Timing and Polarimetry observatory (eXTP). An event generator, based on XIMPOL, is used to sample the parameters of the X-rays reaching the aperture of the telescope. The trajectories and interactions of X-rays through the telescope and the corresponding secondaries are calculated using the optics and detector simulation model built in GEANT4, before being translated into signals in the pixelated readout electronics. It is shown th
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Cibrario, Nicoló, Michela Negro, Raffaella Bonino, et al. "Mitigating Polarization Leakage in Gas Pixel Detectors through Hybrid Machine Learning and Analytic Event Reconstruction." Astrophysical Journal 984, no. 2 (2025): 171. https://doi.org/10.3847/1538-4357/adc92c.

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Abstract Spatially resolved polarization measurements of extended X-ray sources are expanding our understanding of the emission mechanisms and magnetic field properties involved. Such measurements have been possible in the past few years thanks to the Imaging X-ray Polarimetry Explorer (IXPE). However, the analysis of extended sources suffers a systematic effect known as polarization leakage, which artificially affects the measured polarization signal. To address this issue, we built a hybrid reconstruction algorithm, which combines machine learning and analytic techniques to improve the recon
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Sukhanova, Vasilisa A., Elena V. Uspenskaya, Safdari Ainaz, Hoang Thi Ngoc Quynh, and Aleksey A. Timofeev. "Development of a Comprehensive Approach to Quality Control of Dermorphin Derivative—Representative of Synthetic Opioid Peptides with Non-Narcotic Type of Analgesia." Scientia Pharmaceutica 93, no. 1 (2024): 3. https://doi.org/10.3390/scipharm93010003.

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Peptides occupy a significant share of the pharmaceutical market and are among the top-200 selling drugs in the group of non-insulin drugs with analgesic, antibacterial and cardiovascular effects. The aim of this work is to develop a comprehensive analytical approach for quality control of novel synthetic peptides with non-narcotic types of analgesia and to provide docking simulations of dermorphin complex formation at the μ-opioid receptor (MOR) binding site. The materials and methods used include the pharmaceutical substance dermorphin tetrapeptide (DMTP) (tyrosyl-D-arginyl-phenylalanyl-glyc
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Soffitta, Paolo. "The Imaging X-ray Polarimetry Explorer (IXPE) and New Directions for the Future." Instruments 8, no. 2 (2024): 25. http://dx.doi.org/10.3390/instruments8020025.

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An observatory dedicated to X-ray polarimetry has been operational since 9 December 2021. The Imaging X-ray Polarimetry Explorer (IXPE), a collaboration between NASA and ASI, features three X-ray telescopes equipped with detectors sensitive to linear polarization set to 120°. This marks the first instance of a three-telescope SMEX mission. Upon reaching orbit, an extending boom was deployed, extending the optics and detector to a focal length of 4 m. IXPE targets each celestial source through dithering observations. This method is essential for supporting on-ground calibrations by averaging th
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Bloser, P. F., J. S. Legere, M. L. McConnell, et al. "Calibration of the Gamma-RAy Polarimeter Experiment (GRAPE) at a polarized hard X-ray beam." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 600, no. 2 (2009): 424–33. http://dx.doi.org/10.1016/j.nima.2008.11.118.

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Chauvin, M., M. Friis, M. Jackson, et al. "Calibration and performance studies of the balloon-borne hard X-ray polarimeter PoGO+." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 859 (July 2017): 125–33. http://dx.doi.org/10.1016/j.nima.2017.03.027.

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Dissertations / Theses on the topic "X-ray polarimetry, calibration"

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MULERI, FABIO. "Expectations and perspectives of X-ray photoelectric polarimetry." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/816.

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La polarimetria è l'ultima branca dell'Astronomia nella banda dei raggi X ancora inesplorata. Nonostante un vasto interesse testimoniato da un'estesa letteratura, il suo sviluppo è stato impedito dalla mancanza di dispositivi la cui sensibilità giustificasse l'inserimento di polarimetri X a bordo delle missioni spaziali moderne. Ciononostante nuovi strumenti basati sull'effetto fotoelettrico, capaci di risolvere le tracce dei fotoelettroni in un gas, offrono oggi la possibilità di colmare il divario tra aspettative teoriche e gli scarsi risultati ad oggi raggiunti: in questo ambito, uno dei pr
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FERRAZZOLI, RICCARDO. "The Imaging X-ray Polarimetry Explorer (IXPE): prospects for spatially-resolved X-ray polarimetry of extended sources and in-orbit calibrations." Doctoral thesis, 2022. http://hdl.handle.net/11573/1629067.

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Context: X-ray polarimetry provides two missing observables in the high energy domain, namely the polarization degree and angle, making it possible to obtain information on the geometry and emission processes of high energy celestial sources. Unfortunately, the field has been dormant for decades because of technological limitations and competition with other experiments. The launch of the NASA/ASI Imaging X-ray Polarimetry Explorer (IXPE) mission in December 2021 opens a new era for X-ray polarimetry. Thanks to the imaging and the polarimetric capabilities of the Gas Pixel Detectors, IX
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Book chapters on the topic "X-ray polarimetry, calibration"

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Soffitta, Paolo, and Enrico Costa. "X-Ray Polarimetry (Instrument/Techniques/Calibration)." In Astrophysics and Space Science Library. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19715-5_4.

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Conference papers on the topic "X-ray polarimetry, calibration"

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Muleri, Fabio, and Paolo Soffitta. "A Versatile Facility for the calibration of X-ray polarimeters." In Polarimetry days in Rome: Crab status, theory and prospects. Sissa Medialab, 2009. http://dx.doi.org/10.22323/1.078.0028.

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Zane, Silvia, Berend Winter, Craig Theobalds, et al. "The on-board calibration system of the X-ray Imaging Polarimetry Explorer (XIPE)." In SPIE Astronomical Telescopes + Instrumentation, edited by Jan-Willem A. den Herder, Tadayuki Takahashi, and Marshall Bautz. SPIE, 2016. http://dx.doi.org/10.1117/12.2233448.

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Tomsick, John A., Enrico Costa, J. Dwyer, et al. "Calibration of the Stellar X-Ray Polarimeter." In Optical Science, Engineering and Instrumentation '97, edited by Oswald H. W. Siegmund and Mark A. Gummin. SPIE, 1997. http://dx.doi.org/10.1117/12.283780.

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Rankin, John, Fabio Muleri, Riccardo Ferrazzoli, et al. "In-flight monitoring and calibration of the x-ray polarimeters on board IXPE: year two." In UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII, edited by Oswald H. Siegmund and Keri Hoadley. SPIE, 2023. http://dx.doi.org/10.1117/12.2677264.

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Muleri, Fabio, Paolo Soffitta, Ronaldo Bellazzini, et al. "A very compact polarizer for an x-ray polarimeter calibration." In Optical Engineering + Applications, edited by Oswald H. W. Siegmund. SPIE, 2007. http://dx.doi.org/10.1117/12.734647.

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Ziock, Klaus, Eric H. Silver, and Michael P. Raffanti. "Stellar x-ray polarimeter: polarizer development and calibration at the LEA/LLNL." In SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, edited by Silvano Fineschi. SPIE, 1994. http://dx.doi.org/10.1117/12.168587.

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Muleri, Fabio, Paolo Soffitta, Ronaldo Bellazzini, et al. "A versatile facility for the calibration of x-ray polarimeters with polarized and unpolarized controlled beams." In SPIE Astronomical Telescopes + Instrumentation, edited by Martin J. L. Turner and Kathryn A. Flanagan. SPIE, 2008. http://dx.doi.org/10.1117/12.789605.

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