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The PoGO plus view ...
The PoGO plus view on Crab off-pulse hard X-ray polarization
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- Chauvin, Maxime (author)
- KTH,Partikel- och astropartikelfysik,AlbaNova Univ Ctr, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden
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- Florén, Hans-Gustav (author)
- Stockholms universitet,Institutionen för astronomi,Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden
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- Friis, Mette (author)
- KTH,Partikel- och astropartikelfysik,AlbaNova Univ Ctr, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
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- Jackson, Miranda (author)
- KTH,Partikel- och astropartikelfysik
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- Kamae, T. (author)
- Univ Tokyo, Dept Phys, Tokyo 1130033, Japan.
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- Kataoka, J. (author)
- Waseda Univ, Res Inst Sci & Engn, Tokyo 1698555, Japan.
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- Kawano, T. (author)
- Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
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- Kiss, Mózsi, 1982- (author)
- KTH,Partikel- och astropartikelfysik,AlbaNova Univ Ctr, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
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- Mikhalev, Victor (author)
- KTH,Partikel- och astropartikelfysik,AlbaNova Univ Ctr, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
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- Mizuno, T. (author)
- Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
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- Tajima, H. (author)
- Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi 4648601, Japan.
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- Takahashi, H. (author)
- Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
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- Uchida, N. (author)
- Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan.
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- Pearce, Mark, 1970- (author)
- KTH,Partikel- och astropartikelfysik,AlbaNova Univ Ctr, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden.
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(creator_code:org_t)
- 2018-02-26
- 2018
- English.
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In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press. - 0035-8711 .- 1365-2966 .- 1745-3925 .- 1745-3933. ; 477:1, s. L45-L49
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https://urn.kb.se/re...
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Abstract
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- The linear polarization fraction (PF) and angle of the hard X-ray emission from the Crab provide unique insight into high-energy radiation mechanisms, complementing the usual imaging, timing, and spectroscopic approaches. Results have recently been presented by two missions operating in partially overlapping energy bands, PoGO+ (18-160 keV) and AstroSat CZTI (100-380 keV). We previously reported PoGO+ results on the polarization parameters integrated across the light curve and for the entire nebula-dominated off-pulse region. We now introduce finer phase binning, in light of the AstroSat CZTI claim that the PF varies across the off-pulse region. Since both missions are operating in a regime where errors on the reconstructed polarization parameters are non-Gaussian, we adopt a Bayesian approach to compare results from each mission. We find no statistically significant variation in off-pulse polarization parameters, neither when considering the mission data separately nor when they are combined. This supports expectations from standard high-energy emission models.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- instrumentation: polarimeters
- methods: statistical
Publication and Content Type
- ref (subject category)
- art (subject category)
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Chauvin, Maxime
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Florén, Hans-Gus ...
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Friis, Mette
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Jackson, Miranda
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Kamae, T.
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Kataoka, J.
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Kawano, T.
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Kiss, Mózsi, 198 ...
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Mikhalev, Victor
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Mizuno, T.
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Tajima, H.
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Takahashi, H.
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Uchida, N.
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Pearce, Mark, 19 ...
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Royal Institute of Technology
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Stockholm University