Revealing the Nature of Supermassive Black Hole Coronae with Synergy of XRISM and ALMA

Session

ミリ波 / Millimeter Emission

10 Mar 2025, 13:10

セミナー室6E+F (Osaka University Nakanoshima Center)

Conveners

ミリ波 / Millimeter Emission

• Yoshiyuki Inoue (Osaka University)

ミリ波 / Millimeter Emission

• There are no conveners in this block

10. Millimeter continuum emission from Seyfert galaxies/LLAGNs

Akihiro Doi (ISAS/JAXA)

10/03/2025, 13:10

This presentation reviews the history of discoveries of millimeter wave continuum emission from the vicinity of active SMBHs in low-luminosity AGNs, including Seyfert galaxies.

11. Study of the AGN Central Engine by Millimeter and X-ray Observations

Taiki Kawamuro (RIKEN)

10/03/2025, 14:00

I will present our recent studies of nearby AGNs based on millimeter and X-ray observations

12. ALMA Continuum Observations of NGC 1068 and GRS 1734-292

Tomonari Michiyama (Shunan University)

10/03/2025, 15:05

"I summarize three ALMA studies investigating jet and coronal activities in Seyfert galaxies.

NGC 1068 Jet: High-resolution ALMA observations reveal parsec-scale blobs in the jet of NGC 1068, with a magnetic field of ≈240 μG. These findings suggest cosmic-ray amplification and significant galactic impact even from modest-power jets.

NGC 1068 Core Spectrum: Broad-band data from 5–700 GHz,...

13. Millimeter flare unveils magnetic activity around a supermassive black hole

Takuma Izumi (NAOJ)

10/03/2025, 15:45

The magnetic fields surrounding supermassive black holes (SMBHs) are crucial to high-energy phenomena such as the initiation of relativistic jets and the formation of hot accretion disk corona that radiates strong X-rays. Various observations have been attempted to assess magnetic fields at the cores of mass-accreting SMBHs (active galactic nuclei; AGNs), but details remain unclear at a scale...

14. The millimetric variability of IC4329A

Samuel Barnier (Osaka University)

10/03/2025, 16:05

"ALMA’s high-resolution observations have unveiled an excess of emission in the millimeter bands of radio-quiet Active Galactic Nuclei (AGN), yet the origin of this emission remains unclear. One proposed explanation is the synchrotron emission produced by accelerated non-thermal electrons within the X-ray hot corona. Such non-thermal population could also be the origin of the Neutrino emission...