International audienceWe present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy NGC 4151. The source has been observed with the Imaging X-ray Polarimetry Explorer (IXPE) for 700 ks, complemented with simultaneous XMM-Newton (50 ks) and NuSTAR (100 ks) pointings. A polarization degree Π = 4.9 ± 1.1% and angle Ψ = 86○ ± 7○ east of north (68% confidence level) are measured in the 2-8 keV energy range. The spectro-polarimetric analysis shows that the polarization could be entirely due to reflection. Given the low reflection flux in the IXPE band, this requires however a reflection with a very large (>38%) polarization degree. Assuming more reasonable values, a polarization degree of the hot corona ranging from ~4 to ~8% is ...
International audienceWe report on the first observation of a radio-quiet Active Galactic Nucleus (A...
International audienceWe report on the second observation of the radio-quiet active galactic nucleus...
International audienceWe report on the Imaging X-ray Polarimetry Explorer (IXPE) observation of the ...
International audienceWe present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy...
We present an X-ray spectropolarimetric analysis of the bright Seyfert galaxy NGC 4151. The source h...
International audienceWe present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy...
International audienceWe report on the first observation of a radio-quiet Active Galactic Nucleus (A...
International audienceWe report on the second observation of the radio-quiet active galactic nucleus...
International audienceWe report on the Imaging X-ray Polarimetry Explorer (IXPE) observation of the ...
International audienceWe present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy...
We present an X-ray spectropolarimetric analysis of the bright Seyfert galaxy NGC 4151. The source h...
International audienceWe present an X-ray spectro-polarimetric analysis of the bright Seyfert galaxy...
International audienceWe report on the first observation of a radio-quiet Active Galactic Nucleus (A...
International audienceWe report on the second observation of the radio-quiet active galactic nucleus...
International audienceWe report on the Imaging X-ray Polarimetry Explorer (IXPE) observation of the ...