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Comet 67P/Churyomov-Gerasimenko – arguably the most-studied comet in history – has yielded a cosmic surprise: It emits molecular oxygen drawn from its nucleus.
Detection of jet precession in the active nucleus of M81
Galaxies: Individual: M81 – galaxies: active – galaxies: jets – galaxies: nuclei – radio continuum: galaxies–radiation mechanisms: nonthermal – astrometry
2011/9/27
(See the complete and formatted abstract in the paper). We report on VLBI monitoring of the low-luminosity AGN (LLAGN) in M81 at 1.7, 2.3, 5, and 8.4GHz. These observations are phase-referenced to the...
Feeding and feedback in the active nucleus of Mrk 1157 probed with Gemini NIFS
galaxies: individual (Mrk 1157) – galaxies: individual (NGC591) – galaxies:Seyfert – galaxies: ISM – infrared: galaxies – galaxies: kinematics and dynamics
2011/10/8
We have mapped the stellar and gaseous kinematics, as well as the emission-line flux distributions and ratios, from the inner 450pc radius of Mrk1157, using 2D near-IR spectra obtained with the Gemini...
The X-ray Power Spectral Density Function of the Seyfert Active Galactic Nucleus NGC 7469
High Energy Astrophysical Phenomena (astro-ph.HE)
2011/1/5
We present the broadband X-ray power spectral density function (PSD) of the X-ray-luminous Seyfert 1.2 NGC 7469, measured from Rossi X-ray Timing Explorer monitoring data and two XMM-Newton observatio...
Gas Accretion in the M32 Nucleus: Past & Present
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Galaxy Astrophysics (astro-ph.GA)
2010/12/27
Using adaptive optics assisted Gemini/NIFS data, I study the present and past gas accretion in the central 3" of the M32 nucleus. From changes in the spectral slope and CO line depths near the center,...
Imaging spectroscopy of the centers of nearby AGN: Molecular gas streaming and obscuring the active nucleus of NGC1068
Imaging spectroscopy active nucleus Molecular gas
2009/7/9
Imaging spectroscopy of the centers of nearby AGN: Molecular gas streaming and obscuring the active nucleus of NGC1068。
Mid-IR emission from the nucleus of Centaurus A。
In Search of a Radio Counterpart for the Ultraluminous X-Ray Source at the Nucleus of M33
Radio Counterpart Nucleus of M33 Ultraluminous X-Ray
2009/6/18
In Search of a Radio Counterpart for the Ultraluminous X-Ray Source at the Nucleus of M33。
Time Variation in the Radio Continuum Emission Associated with the Surroundings of the Nucleus of the Planetary Nebula KjPn 8
Radio Continuum Emission KjPn 8 Planetary Nebula
2009/6/11
Time Variation in the Radio Continuum Emission Associated with the Surroundings of the Nucleus of the Planetary Nebula KjPn 8。