activity
20002017
most citedMicrolensing optical depth towards the Galactic bulge from MOA observations during 2000 with Difference Image Analysis

231 citations · 1.3k across the 31 of their papers we have counts for

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5 papers · 1 filter

astro-ph.GA2017

OISTER Optical and Near-Infrared Monitoring Observations of a Peculiar Radio-Loud Active Galactic Nucleus SDSS J110006.07+442144.3

Tomoki Morokuma, Masaomi Tanaka, Yasuyuki T. Tanaka +80

We present monitoring campaign observations at optical and near-infrared (NIR) wavelengths for a radio-loud active galactic nucleus (AGN) at z=0.840, SDSS~J110006.07+442144.3 (here…

astro-ph.GA2016★ 40 cited

X-ray and Optical Correlation of Type I Seyfert NGC 3516 Studied with Suzaku and Japanese Ground-Based Telescopes

Hirofumi Noda, Takeo Minezaki, Makoto Watanabe +23

From 2013 April to 2014 April, we performed an X-ray and optical simultaneous monitoring of the type 1.5 Seyfert galaxy NGC 3516. It employed Suzaku, and 5 Japanese ground-based te…

astro-ph.GA2015★ 48 cited

Subaru Telescope adaptive optics observations of gravitationally lensed quasars in the Sloan Digital Sky Survey

Cristian E. Rusu, Masamune Oguri, Yosuke Minowa +12

We present the results of an imaging observation campaign conducted with the Subaru Telescope adaptive optics system (IRCS+AO188) on 28 gravitationally lensed quasars (23 doubles,…

astro-ph.GA2014★ 17 cited

Discovery of Dramatic Optical Variability in SDSS J1100+4421: A Peculiar Radio-Loud Narrow-Line Seyfert 1 Galaxy?

Masaomi Tanaka, Tomoki Morokuma, Ryosuke Itoh +55

We present our discovery of dramatic variability in SDSS J1100+4421 by the high-cadence transient survey Kiso Supernova Survey (KISS). The source brightened in the optical by at le…

astro-ph.GA2014★ 20 cited

Variable optical polarization during high state in gamma-ray loud narrow line Seyfert 1 galaxy 1H 0323+342

Ryosuke Itoh, Yasuyuki T. Tanaka, Hiroshi Akitaya +34

We present results of optical polarimetric and multi-band photometric observations for gamma-ray loud narrow-line Seyfert 1 galaxy 1H 0323+342. This object has been monitored by 1.…