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HAWC Performance Enhanced by Machine Learning in Gamma-Hadron Separation
R. Alfaro, C. Alvarez, A. Andrés +92
Improving gamma-hadron separation is one of the most effective ways to enhance the performance of ground-based gamma-ray observatories. With over a decade of continuous operation,…
Mitigating Polarization Leakage in Gas Pixel Detectors through Hybrid Machine Learning and Analytic Event Reconstruction
Nicoló Cibrario, Michela Negro, Raffaella Bonino +18
Spatially resolved polarization measurements of extended X-ray sources are expanding our understanding of the emission mechanisms and magnetic field properties involved. Such measu…
Joint machine learning and analytic track reconstruction for X-ray polarimetry with gas pixel detectors
Nicoló Cibrario, Michela Negro, Nikita Moriakov +9
We present our study on the reconstruction of photoelectron tracks in gas pixel detectors used for astrophysical X-ray polarimetry. Our work aims to maximize the performance of con…
Equalizing the Pixel Response of the Imaging Photoelectric Polarimeter On-Board the IXPE Mission
John Rankin, Fabio Muleri, Alessandro Di Marco +18
The Gas Pixel Detector is a gas detector, sensitive to the polarization of X-rays, currently flying on-board IXPE - the first observatory dedicated to X-ray polarimetry. It detects…
Polarisation Leakage due to Errors in Track Reconstruction in Gas Pixel Detectors
N. Bucciantini, N. Di Lalla, R. W. R. Romani +5
X-ray polarimetry, based on Gas Pixel Detectors (GPDs), have reached a high level of maturity with the Imaging X-ray Polarimeter Explorer (IXPE) leading to the first ever spatially…
Low-Energy Electron-Track Imaging for a Liquid Argon Time-Projection-Chamber Telescope Concept using Probabilistic Deep Learning
M. Buuck, A. Mishra, E. Charles +5
The GammaTPC is an MeV-scale single-phase liquid argon time-projection-chamber gamma-ray telescope concept with a novel dual-scale pixel-based charge-readout system. It promises to…
Calibration of the IXPE focal plane X-ray polarimeters to polarized radiation
Alessandro Di Marco, Sergio Fabiani, Fabio La Monaca +80
IXPE (Imaging X-ray Polarimetry Explorer) is a NASA Small Explorer mission -- in partnership with the Italian Space Agency (ASI) -- dedicated to X-ray polarimetry in the 2--8 keV e…
ixpeobssim: a Simulation and Analysis Framework for the Imaging X-ray Polarimetry Explorer
L. Baldini, N. Bucciantini, N. Di Lalla +7
ixpeobssim is a simulation and analysis framework, based on the Python programming language and the associated scientific ecosystem, specifically developed for the Imaging X-ray Po…
The Imaging X-Ray Polarimetry Explorer (IXPE): Pre-Launch
Martin C. Weisskopf, Paolo Soffitta, Luca Baldini +155
Scheduled to launch in late 2021, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer Mission in collaboration with the Italian Space Agency (ASI). The mission w…
An algorithm to calibrate and correct the response to unpolarized radiation of the X-ray polarimeter on board IXPE
John Rankin, Fabio Muleri, Allyn F. Tennant +18
The Gas Pixel Detector is an X-ray polarimeter to fly on-board IXPE and other missions. To correctly measure the source polarization, the response of IXPE's GPDs to unpolarized rad…
The Instrument of the Imaging X-ray Polarimetry Explorer
Paolo Soffitta, Luca Baldini, Ronaldo Bellazzini +78
While X-ray Spectroscopy, Timing and Imaging have improved verymuch since 1962, when the first astronomical non-solar source was discovered, especially with the launch of Newton/X-…