Report
Investigating the Properties of the Relativistic Jet and Hot Corona in AGN with X-ray Polarimetry
| العنوان: | Investigating the Properties of the Relativistic Jet and Hot Corona in AGN with X-ray Polarimetry |
|---|---|
| المؤلفون: | Kim, Dawoon E., Di Gesu, Laura, Marin, Frédéric, Marscher, Alan P., Matt, Giorgio, Soffitta, Paolo, Tombesi, Francesco, Costa, Enrico, Donnarumma, Immacolata |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | X-ray polarimetry has been suggested as a prominent tool for investigating the geometrical and physical properties of the emissions from active galactic nuclei (AGN). The successful launch of the Imaging X-ray Polarimetry Explorer (IXPE) on 9 December 2021 has expanded the previously restricted scope of polarimetry into the X-ray domain, enabling X-ray polarimetric studies of AGN. Over a span of two years, IXPE has observed various AGN populations, including blazars and radio-quiet AGN. In this paper, we summarize the remarkable discoveries achieved thanks to the opening of the new window of X-ray polarimetry of AGN through IXPE observations. We will delve into two primary areas of interest: first, the magnetic field geometry and particle acceleration mechanisms in the jets of radio-loud AGN, such as blazars, where the relativistic acceleration process dominates the spectral energy distribution; and second, the geometry of the hot corona in radio-quiet AGN. Thus far, the IXPE results from blazars favor the energy-stratified shock acceleration model, and they provide evidence of helical magnetic fields inside the jet. Concerning the corona geometry, the IXPE results are consistent with a disk-originated slab-like or wedge-like shape, as could result from Comptonization around the accretion disk. Comment: 16 pages, 5 figures, 2 tables; Accepted for publication in Galaxies, Special Issue "Multi-Phase Fueling and Feedback Processes in Jetted AGN." |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2404.14200 |
| رقم الانضمام: | edsarx.2404.14200 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |