28 citations · 81 across the 7 of their papers we have counts for
8 papers
Sirius: A Prototype Astronomical Intensity Interferometer Using Avalanche Photodiodes in Linear Mode
Junghwan Oh, Jan Wagner, Sascha Trippe +3
Optical intensity interferometry, developed in the 1950s, is a simple and inexpensive method for achieving angular resolutions on microarcsecond scales. Its low sensitivity has lim…
Jet Kinematics of the Quasar 4C +21.35 from Observations with the KaVA Very Long Baseline Interferometry Array
Taeseok Lee, Sascha Trippe, Motoki Kino +39
We present the jet kinematics of the flat spectrum radio quasar (FSRQ) 4C +21.35 using time-resolved KaVA very long baseline interferometry array radio maps obtained from September…
Revealing the Nature of Blazar Radio Cores through Multi-Frequency Polarization Observations with the Korean VLBI Network
Jongho Park, Minchul Kam, Sascha Trippe +13
We study the linear polarization of the radio cores of eight blazars simultaneously at 22, 43, and 86 GHz with observations obtained by the Korean VLBI Network (KVN) in three epoch…
The Millimeter-Radio Emission of BL Lacertae During Two gamma-ray Outbursts
Dae-Won Kim, Sascha Trippe, Sang-Sung Lee +13
We present a study of the inexplicit connection between radio jet activity and gamma-ray emission of BL Lacertae (BL Lac; 2200+420). We analyze the long-term millimeter activity of…
A Search for AGN Intra-day Variability with KVN
Taeseok Lee, Sascha Trippe, Junghwan Oh +3
Active galactic nuclei (AGN) are known for irregular variability on all time scales, down to intra-day variability with relative variations of a few percent within minutes to hours…
PAGaN II: The Evolution of AGN Jets on Sub-Parsec Scales
Junghwan Oh, Sascha Trippe, Sincheol Kang +7
We report first results from KVN and VERA Array (KaVA) VLBI observations obtained in the frame of our Plasma-physics of Active Galactic Nuclei (PAGaN) project. We observed eight se…
PAGaN I: Multi-Frequency Polarimetry of AGN Jets with KVN
Jae-Young Kim, Sascha Trippe, Bong Won Sohn +5
Active Galactic Nuclei (AGN) with bright radio jets offer the opportunity to study the structure of and physical conditions in relativistic outflows. For such studies, multi-freque…
Optical Multi-Channel Intensity Interferometry - or: How To Resolve O-Stars in the Magellanic Clouds
Sascha Trippe, Jae-Young Kim, Bangwon Lee +6
Intensity interferometry, based on the Hanbury Brown-Twiss effect, is a simple and inexpensive method for optical interferometry at microarcsecond angular resolutions; its use in a…