2013/02/14 by Paul Moran, Moran, Paul, A. Shearer +5
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #FOS: Physical sciences #Geophysics and Gravity Measurements #High Energy Astrophysical Phenomena (astro-ph.HE) #Pulsars and Gravitational Waves Research
paper · pdf · doi:10.48550/arxiv.1302.3622
openalex publication_date 2013/02/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Previous INTEGRAL/IBIS observations have shown that the gamma-ray radiation\nof the Crab Nebula is highly polarised and remarkably aligned along the axis of\nrotation of the pulsar (Forot et al. 2008). Their study was based on the first\nfour years of operation of the satellite. Here we present an analysis based\nupon nearly ten years of operation. This new analysis allows a better\ncharacterisation of the polarisation fraction and position angle, as well as a\nmeasure of spectral energy distribution of the polarised component. These\nresults are then compared to the known optical polarisation of the pulsar and\nnearby synchrotron knot. In the future we shall compare the gamma-ray\npolarisation with the phase-resolved optical polarisation using instruments\nsuch as GASP (Kyne et al. 2010).\n