Polarimetric Analysis of the Long Duration Gamma Ray Burst GRB 160530A With the Balloon Borne Compton Spectrometer and Imager
| Autor: | Mark Amman, C.-H. Lin, C. Sleator, A. Lowell, P. von Ballmoos, Carolyn Kierans, Chien-Ying Yang, Steven E. Boggs, C. L. Chiu, P. Jean, Chih-Kuo Tseng, Hsiang-Kuang Chang, John A. Tomsick, Andreas Zoglauer |
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| Přispěvatelé: | Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie ( IRAP ), Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS ) |
| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph] Astrophysics::High Energy Astrophysical Phenomena Polarimetry FOS: Physical sciences Astrophysics Balloon 01 natural sciences 0103 physical sciences gamma-ray burst: individual Nuclear Experiment 010303 astronomy & astrophysics Short duration 0105 earth and related environmental sciences Physics High Energy Astrophysical Phenomena (astro-ph.HE) polarization Spectrometer instrumentation: polarimeters Astronomy and Astrophysics gamma rays: general Polarization (waves) 3. Good health techniques: polarimetric Space and Planetary Science Astrophysics - High Energy Astrophysical Phenomena Gamma-ray burst [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] balloons |
| Zdroj: | Astrophys.J. Astrophys.J., 2017, 848 (2), pp.119. ⟨10.3847/1538-4357/aa8ccb⟩ Astrophys.J., 2017, 848 (2), pp.119. 〈10.3847/1538-4357/aa8ccb〉 |
| DOI: | 10.48550/arxiv.1709.05349 |
| Popis: | A long duration gamma-ray burst, GRB 160530A, was detected by the Compton Spectrometer and Imager (COSI) during the 2016 COSI Super Pressure Balloon campaign. As a Compton telescope, COSI is inherently sensitive to the polarization of gamma-ray sources in the energy range 0.2-5.0 MeV. We measured the polarization of GRB 160530A using 1) a standard method (SM) based on fitting the distribution of azimuthal scattering angles with a modulation curve, and 2) an unbinned, maximum likelihood method (MLM). In both cases, the measured polarization level was below the $99\%$ confidence minimum detectable polarization levels of $72.3 \pm 0.8\%$ (SM) and $57.5 \pm 0.8\%$ (MLM). Therefore, COSI did not detect polarized gamma-ray emission from this burst. Our most constraining $90\%$ confidence upper limit on the polarization level was $46\%$ (MLM). Comment: For more information regarding our implementation of maximum likelihood Compton polarimetry, please see our accompanying paper "Maximum Likelihood Compton Polarimetry with the Compton Spectrometer and Imager" |
| Databáze: | OpenAIRE |
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