تقرير
The Multi-Wavelength Environment of Second Bologna Catalog Sources
| العنوان: | The Multi-Wavelength Environment of Second Bologna Catalog Sources |
|---|---|
| المؤلفون: | Paggi, A., Massaro, F., Peña-Herazo, H., Missaglia, V., Jimenez-Gallardo, A., Ricci, F., Ettori, S., Giovannini, G., Govoni, F., Baldi, R. D., Mingo, B., Murgia, M., Liuzzo, E., Galati, F. |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies |
| الوصف: | We present the first results of the Chandra Cool Targets (CCT) survey of the Second Bologna Catalog (B2CAT) of powerful radio sources, aimed at investigating the extended X-ray emission surrounding these sources. For the first 33 sources observed in the B2CAT CCT survey, we performed both imaging and spectral X-ray analysis, producing multi-band Chandra images, and compared them with radio observations. To evaluate the presence of extended emission in the X-rays, we extracted surface flux profiles comparing them with simulated ACIS Point Spread Functions. We detected X-ray nuclear emission for 28 sources. In addition, we detected 8 regions of increased X-ray flux originating from radio hot-spots or jet knots, and a region of decreased flux, possibly associated with an X-ray cavity. We performed X-ray spectral analysis for 15 nuclei and found intrinsic absorption significantly larger than the Galactic values in four of them. We detected significant extended X-ray emission in five sources, and fitted their spectra with thermal models with gas temperatures $\sim 2 \text{ keV}$. In the case of B2.1 0742+31, the surrounding hot gas is compatible with the ICM of low luminosity clusters of galaxies, while the X-ray diffuse emission surrounding the highly disturbed WAT B2.3 2254+35 features a luminosity similar to those of relatively bright galaxy groups, although its temperature is similar to those of low luminosity galaxy clusters. These results highlight the power of the low-frequency radio selection, combined with short Chandra snapshot observations, to investigate the properties of the X-ray emission from radio sources. Comment: 38 pages, 13 figures, 6 tables. Accepted for publication in The Astrophysical Journal Supplement Series |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2307.02541 |
| رقم الأكسشن: | edsarx.2307.02541 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |