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arxiv: 1904.09313 · v1 · pith:RP2P4LUUnew · submitted 2019-04-19 · 🌌 astro-ph.HE · gr-qc

Astro2020 Science White Paper: Using X-Ray Polarimetry to Probe the Physics of Black Holes and Neutron Stars

Henric Krawczynski (Wash. U. St. Louis , MCSS) , Giorgio Matt (U. Roma Tre) , Adam R. Ingram (Oxford) , Roberto Taverna (U. Roma Tre , U. Padova) , Roberto Turolla (U. Padova , MSSL)
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Fabian Kislat (UNH) C. C. Teddy Cheung (NRL) Andrei Bykov (Ioffe Inst. St. Petersburg) Kuver Sinha (U. Oklahoma) Haocheng Zhang (Purdue) Jeremy Heyl (UBC) Niccolo Bucciantini (INAF Arcetri) Greg Madejski (SLAC Stanford) Tim Kallman (GSFC) Keith M. Jahoda (GSFC) Quin Abarr (Wash. U. St. Louis Matthew G. Baring (Rice) Luca Baldini (U. Pisa INFN) Mitchell Begelman (CU Boulder) Markus Boettcher (NWU) Edward Cackett (Wayne State) Ilaria Caiazzo (UBC) Paolo Coppi (Yale) Enrico Costa (INAF-IASF Roma) Jason Dexter (CU Boulder) Jean-Francois Fortin (U. Laval) Charles Gammie (UI Urbana Champaign) Jessica A. Gaskin (MSFC) Dimitrios Giannios (Purdue) Pranab Ghosh (Tata Inst.) Alice K. Harding (GSFC) Dieter H. Hartmann (Clemson) Kiyoshi Hayashida (Osaka U.) Svetlana G. Jorstad (Boston U. St. Petersburg State U.) Philip Kaaret (Univ. of Iowa) Takao Kitaguchi (RIKEN) Luca Latronico (Torino) Thomas Maccarone (Texas Tech) Alan Marscher (Boston U.) Herman Marshall (MIT) Mark McConnell (UNH) Jon M. Miller (UM Ann Arbor) Stephen L. O'Dell (MSFC) Feryal Oezel (UA Tucson) Takashi Okajima (GSFC) Mark Pearce (KTH) Jeremy Perkins (GSFC) Brian D. Ramsey (MSFC) Roger W. Romani (Stanford) Jeremy D. Schnittman (GSFC) Carmelo Sgro (Pisa) Paolo Soffitta (INAF-IASF Roma) Hiromitsu Takahashi (Hiroshima U.) Toru Tamagawa (RIKEN) John Tomsick (UC Berkeley SSL) Martin C. Weisskopf (MSFC) George Younes (GWU)
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classification 🌌 astro-ph.HE gr-qc
keywords x-rayphysicspolarimetryimagingmagnitudeobjectssciencewhite
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This white paper highlights compact object and fundamental physics science opportunities afforded by high-throughput broadband (0.1-60 keV) X-ray polarization observations. X-ray polarimetry gives new observables with geometric information about stellar remnants which are many orders of magnitude too small for direct imaging. The X-ray polarimetric data also reveal details about the emission mechanisms and the structure of the magnetic fields in and around the most extreme objects in the Universe. Whereas the Imaging X-ray Polarimetry Explorer (IXPE) to be launched in 2021 will obtain first results for bright objects, a follow-up mission could be one order of magnitude more sensitive and would be able to use a broader bandpass to perform physics type experiments for representative samples of sources.

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