From the 1 of 3 linked papers with an AI index.
3 papers
X-ray and optical decline of the intermediate mass black hole HLX-1
Roberto Soria, Maya Garbaccio Gili, Francesco Massaro +2
The paper presents new Hubble, Chandra, and Swift observations of the intermediate‑mass black hole candidate HLX‑1, showing a rapid X‑ray decline while the optical/UV emission fade…
Supermassive black hole mass measurement in the spiral galaxy NGC 4736 Using JWST/NIRSpec stellar kinematics
Dieu D. Nguyen, Hai N. Ngo, Tinh Q. T. Le +12
We present accurate mass measurements of the central supermassive black hole (SMBH) in NGC 4736 (M 94).\ We used the ``gold-standard" stellar absorption features (CO band heads) at…
Dot to dot: high- little red dots in - diagrams with galaxy-morphology-specific scaling relations
Alister W. Graham, Igor V. Chilingarian, Dieu D. Nguyen +3
The high redshift 'little red dots' (LRDs) detected with the James Webb Space Telescope are considered to be the cores of emerging galaxies that host active galactic nuclei (AGN).…