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A comprehensive understanding of Gamma Ray Bursts (GRBs) has been elusive due to the variety of questions surrounding the radiation mechanism at play in these events. Polarization measurements of GRBs can heavily constrain the relevant…

High Energy Astrophysical Phenomena · Physics 2020-07-01 Tyler Parsotan , Diego Lopez-Camara , Davide Lazzati

Cadmium Zinc Telluride Imager (CZTI) aboard AstroSat has been regularly detecting Gamma-Ray Bursts (GRBs) since its launch in 2015. Its sensitivity to polarization measurements at energies above 100 keV allows CZTI to attempt…

This paper discusses the latest progress in the development of GRAPE (Gamma-Ray Polarimeter Experiment), a hard X-ray Compton Polarimeter. The purpose of GRAPE is to measure the polarization of hard X-rays in the 50-300 keV energy range. We…

Astrophysics · Physics 2017-08-23 J. S. Legere , P. Bloser , J. R. Macri , M. L. McConnell , T. Narita , J. M. Ryan

Gamma-ray bursts (GRBs) are exceptionally bright electromagnetic events occurring daily on the sky. The prompt emission is dominated by X-/$\gamma$-rays. Since their discovery over 50 years ago, GRBs are primarily studied through spectral…

Instrumentation and Methods for Astrophysics · Physics 2018-09-12 M. Pearce , L. Eliasson , N. Kumar Iyer , M. Kiss , R. Kushwah , J. Larsson , C. Lundman , V. Mikhalev , F. Ryde , T. -A. Stana , H. Takahashi , F. Xie

The X-ray Polarization Probe (XPP) is a second generation X-ray polarimeter following up on the Imaging X-ray Polarimetry Explorer (IXPE). The XPP will offer true broadband polarimetery over the wide 0.2-60 keV bandpass in addition to…

Instrumentation and Methods for Astrophysics · Physics 2019-07-25 Keith Jahoda , Henric Krawczynski , Fabian Kislat , Herman Marshall , Takashi Okajima , Ivan Agudo , Lorella Angelini , Matteo Bachetti , Luca Baldini , Matthew Baring , Wayne Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Niccolo Bucciantini , Ilaria Caiazzo , Fiamma Capitanio , Paolo Coppi , Enrico Costa , Alessandra De Rosa , Ettore Del Monte , Jason Dexter , Laura Di Gesu , Niccolo Di Lalla , Victor Doroshenko , Michal Dovciak , Riccardo Ferrazzoli , Felix Fuerst , Alan Garner , Pranab Ghosh , Denis Gonzalez-Caniulef , Victoria Grinberg , Shuichi Gunji , Dieter Hartman , Kiyoshi Hayashida , Jeremy Heyl , Joanne Hill , Adam Ingram , Wataru Buz Iwakiri , Svetlana Jorstad , Phil Kaaret , Timothy Kallman , Vladimir Karas , Ildar Khabibullin , Takao Kitaguchi , Jeff Kolodziejczak , Chryssa Kouveliotou , Yannis Liodakis , Thomas Maccarone , Alberto Manfreda , Frederic Marin , Andrea Marinucci , Craig Markwardt , Alan Marscher , Giorgio Matt , Mark McConnell , Jon Miller , Ikuyuki Mitsubishi , Tsunefumi Mizuno , Alexander Mushtukov , Stephen Ng , Michael Nowak , Steve O'Dell , Alessandro Papitto , Dheeraj Pasham , Mark Pearce , Lawrence Peirson , Matteo Perri , Melissa Pesce Rollins , Vahe Petrosian , Pierre-Olivier Petrucci , Maura Pilia , Andrea Possenti , Juri Poutanen , Chanda Prescod-Weinstein , Simonetta Puccetti , Tuomo Salmi , Kevin Shi , Paolo Soffita , Gloria Spandre , Jack Steiner , Tod Strohmayer , Valery Suleimanov , Jiri Svoboda , Jean Swank , Toru Tamagawa , Hiromitsu Takahashi , Roberto Taverna , John Tomsick , Alessio Trois , Sergey Tsygankov , Roberto Turolla , Jacco Vink , Joern Wilms , Kinwah Wu , Fei Xie , George Younes , Alessandra Zaino , Anna Zajczyk , Silvia Zane , Andrzej Zdziarski , Haocheng Zhang , Wenda Zhang , Ping Zhou

Over the past few decades impressive progress has been made in the field of photon polarimetry, especially in the hard X-ray and soft gamma-ray energy regime. Measurements of the linear degree of polarization for some of the most energetic…

High Energy Astrophysical Phenomena · Physics 2020-02-03 Cosmin Ilie

The X-ray Timing and Polarization (XTP) is a mission concept for a future space borne X-ray observatory and is currently selected for early phase study. We present a new design of X-ray polarimeter based on the time projection gas chamber.…

Instrumentation and Methods for Astrophysics · Physics 2015-09-16 Hong Li , Hua Feng , Jianfeng Ji , Zhi Deng , Li He , Ming Zeng , Tenglin Li , Yinong Liu , Peiyin Heng , Qiong Wu , Dong Han , Yongwei Dong , Fangjun Lu , Shuangnan Zhang

The prospects for accomplishing x-ray polarization measurements of astronomical sources have grown in recent years, after a hiatus of more than 37 years. Unfortunately, accompanying this long hiatus has been some confusion over the…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Ronald F. Elsner , Stephen L. O'Dell , Martin C. Weisskopf

We have developed a correlation radiometer at 33 GHz devoted to the search for residual polarization of the Cosmic Microwave Background (CMB). The two instruments`s outputs are linear combination of two Stokes Parameters (Q and U or U and…

Astrophysics · Physics 2009-11-07 M. Gervasi , G. Boella , F. Cavaliere , G. Grossetti , A. Passerini , G. Sironi , A. Tartari , M. Zannoni

The NASA/ASI Imaging X-ray Polarimetry Explorer, which will be launched in 2021, will be the first instrument to perform spatially resolved X-ray polarimetry on several astronomical sources in the 2-8 keV energy band. These measurements are…

Optical polarimeters are typically calibrated using measurements of stars with known and stable polarization parameters. However, there is a lack of such stars available across the sky. Many of the currently available standards are not…

POLAR-2 is a next-generation space astronomy platform led by China, with its core scientific objective focused on high-precision polarization measurements of gamma-ray bursts. As one of its key payloads, the Low-energy Polarization Detector…

Instrumentation and Methods for Astrophysics · Physics 2025-11-25 Li-rong Xie , Shi-Qiang Zhou , Di-Fan Yi , Huan-Bo Feng , Zhu-Ke Feng , Dong Wang , Chao-song Gao , En-Wei Liang , Xiang-Ming Sun , Hong-Bang Liu

Since the birth of X-ray astronomy, spectral, spatial and timing observation improved dramatically, procuring a wealth of information on the majority of the classes of the celestial sources. Polarimetry, instead, remained basically…

SPOrt (Sky Polarization Observatory) is a space experiment to be flown on the International Space Station during Early Utilization Phase aimed at measuring the microwave polarized emission with FWHM = 7deg, in the frequency range 22-90 GHz.…

Polarization observations through the next-generation large telescopes will be invaluable for exploring the magnetic fields and composition of jets in AGN, multi-messenger transients follow-up, and understanding interstellar dust and…

Instrumentation and Methods for Astrophysics · Physics 2023-09-12 Ramya M Anche , Grant Williams , Hill Tailor , Chris Packham , Daewook Kim , Jaren N Ashcraft , Ewan S. Douglas , GMT-Pol team

The Gamma-Ray Monitor (GRM) is a key scientific payload onboard the Space-based Multi-band Variable Object Monitor (SVOM) satellite, designed specifically for the detection and study of gamma-ray bursts (GRBs). Launched into a 625 km…

Polarimetric observations of celestial sources in the hard X-ray band stand to provide new information on emission mechanisms and source geometries. PoGO+ is a Compton scattering polarimeter (20-150 keV) optimised for the observation of the…

Instrumentation and Methods for Astrophysics · Physics 2017-03-23 M. Chauvin , M. Friis , M. Jackson , T. Kawano , M. Kiss , V. Mikhalev , N. Ohashi , T. Stana , H. Takahashi , M. Pearce

POET (Polarimeters for Energetic Transients) is a Small Explorer mission concept proposed to NASA in January 2008. The principal scientific goal of POET is to measure GRB polarization between 2 and 500 keV. The payload consists of two wide…

The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) is a balloon-borne telescope designed to study solar-flare particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report…