“X射线天文学60周年及中国X射线天文研究”研讨会：时域与多信使天文学时代的X射线天文研究

Session

Session III

17 Jun 2022, 14:00

Conveners

Session III

• Chair: 方陶陶 ()

Contribution list Timetable

3. 活动星系核的X射线冕区辐射

王俊贤 (USTC)

17/06/2022, 14:00

活动星系核的强X射线辐射据信来自于核区的高温冕区，虽然经历几十年的观测，人们仍然对AGN的冕区缺乏清晰的认识。NuSTAR X射线卫星在3-78 keV能段直接成像观测，可以准确测量活动星系核的冕区温度。利用NuSTAR的高质量光谱， 我们在非Blazar射电躁AGN的NuSTAR光谱中普遍探测到了高能截断特征，表征了其X射线辐射与射电宁静AGN类似，都来源于高温冕区。进一步，我们惊讶地发现，与常规猜测相反，AGN冕区温度与X射线光谱指数呈正相关。同样令人惊讶的是，因为射电躁AGN具有更平的X射线光谱，其冕区温度比射电宁静AGN更低。我们在AGN个源中也发现了随着光谱变陡冕区温度升高的趋势（这一关系可能在谱指数大于2时反转）。这些发现对理解冕区物理提供了全新的线索。

38. X-ray high-energy astrophysics: an overview of personal research

薛永泉 (University of Science and Technology of China)

17/06/2022, 14:20

In this talk, I will present a brief overview of my research on X-ray high-energy astrophysics, including X-ray binaries, AGNs, X-ray surveys, X-ray transients, etc., to pay a tribute to the 60th anniversary of X-ray astronomy.

43. X-ray spectral and timing study of super-Eddington AGN

金驰川 (NAOC)

17/06/2022, 14:35

AGN exhibit the most powerful accretion and radiation processes in the Universe. Super-Eddington Narrow-line Seyfert 1 Galaxies (NLS1s) are phenomenal because of their small black hole masses and very high mass accretion rates. In this talk, I will first talk about the general properties of super-Eddington NLS1s, mainly focusing on the X-ray spectral-timing properties and broadband SED. These...

82. The diffuse X-ray emission in M51

纪丽

17/06/2022, 14:55

12. Discovery and Follow-ups of an Unprecedented SMBH Binary Candidate Predicted to Merge within Three Years

蒋凝 (USTC)

17/06/2022, 15:10

We have recently discovered the first ever SMBH binary candidate approaching final coalescence in a nearby Seyfert 1 galaxy at redshift 0.08. The discovery was made by its unprecedented chirping flares, which predicts a merger time within three years according to our trajectory model (Jiang et al. 2022, arxiv:2201.11633). Since its discovery, extensive multi-wavelength follow-up observations...