دورية أكاديمية
Multiwavelength Polarization Observations of Mrk 501
| العنوان: | Multiwavelength Polarization Observations of Mrk 501 |
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| المؤلفون: | Xin-Ke Hu, Yu-Wei Yu, Jin Zhang, Xiang-Gao Wang, Kishore C. Patra, Thomas G. Brink, Wei-Kang Zheng, Qi Wang, De-Feng Kong, Liang-Jun Chen, Ji-Wang Zhou, Jia-Xin Cao, Ming-Xuan Lu, Zi-Min Zhou, Yi-Ning Wei, Xin-Bo Huang, Xing-Lin Li, Hao Lou, Ji-Rong Mao, En-Wei Liang, Alexei V. Filippenko |
| المصدر: | The Astrophysical Journal Letters, Vol 970, Iss 1, p L22 (2024) |
| بيانات النشر: | IOP Publishing, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Astrophysics |
| مصطلحات موضوعية: | Relativistic jets, X-ray active galactic nuclei, Active galactic nuclei, Blazars, Spectropolarimetry, Astrophysics, QB460-466 |
| الوصف: | Mrk 501 is a prototypical high-synchrotron-peaked blazar and serves as one of the primary targets for the Imaging X-ray Polarimetry Explorer (IXPE). In this study, we report X-ray polarization measurements of Mrk 501 based on six IXPE observations. The detection of X-ray polarization at a confidence level exceeding 99% is achieved in four out of the six observations conducted across the entire energy range (2–8 keV) of IXPE. The maximum polarization degree (Π _X ) is measured to be 15.8% ± 2.8%, accompanied by a polarization angle ( ψ _X ) of 98.°0 ± 5.°1 at a confidence level of 5.6 σ . During the remaining two observations, only an upper limit of Π _X < 12% could be derived at the 99% confidence level. No temporal variability in polarization is observed throughout all six IXPE observations for Mrk 501. A discernible trend of energy-dependent variation in the polarization degree is detected in optical spectropolarimetry; however, no analogous indication is observed in Π _X . The chromatic behavior of Π and the consistent values of ψ across different frequencies from X-ray to radio bands, along with the agreement between ψ and jet position angle, strongly support the interpretation of the energy-stratified model with shock-accelerated particles in the jet of Mrk 501. Additionally, the possibility of the presence of a global helical magnetic field in the jet of Mrk 501 is discussed. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2041-8213 2041-8205 |
| Relation: | https://doaj.org/toc/2041-8205 |
| DOI: | 10.3847/2041-8213/ad5e68 |
| URL الوصول: | https://doaj.org/article/1949b80871b64668b57907c0762a87bb |
| رقم الأكسشن: | edsdoj.1949b80871b64668b57907c0762a87bb |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20418213 20418205 |
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| DOI: | 10.3847/2041-8213/ad5e68 |