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- Institute of Astronomy and Astrophysics, Academia SinicaTW1.4k papers
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11 papers · 2 filters
Structure and Kinematics of CO (J=2-1) Emission in the Central Region of NGC 4258
S. Sawada-Satoh, P. T. P. Ho, S. Muller +2
We present 12CO (J=2-1) observations towards the central region of the Seyfert 2 galaxy NGC 4258 with the Submillimeter Array (SMA). Our interferometric maps show two arm-like elon…
Polarization of high-energy emissions from the Crab pulsar
J. Takata, H. -K. Chang, K. S. Cheng
We investigate polarization of high-energy emissions from the Crab pulsar in the frame work of the outer gap accelerator, following previous works of Cheng and coworkers. The recen…
HOCO+ toward the Galactic Center
Shuji Deguchi, Atsushi Miyazaki, Young Chol Minh
We have identified a weak thermal line U42.767, which has been detected only in the directions toward Sgr A and Sgr B2, as the HOCO+ 2_{02}--1_{01} transition. Because of the proxi…
A New Measure for Weak Lensing Flexion
Yuki Okura, Keiichi Umetsu, Toshifumi Futamase
We study a possibility to use the octopole moment of gravitationally lensed images as a direct measure of the third-order weak gravitational lensing effect, or the gravitational fl…
Elevation angle dependence of the SMA antenna focus position
Satoki Matsushita, Masao Saito, Kazushi Sakamoto +4
We report the measurement results and compensation of the antenna elevation angle dependences of the Sub-millimeter Array (SMA) antenna characteristics. Without optimizing the subr…
The Spitzer c2d Survey of Nearby Dense Cores: III: Low Mass Star Formation in a Small Group, L1251B
Jeong-Eun Lee, James Di Francesco, Shih-Ping Lai +8
We present a comprehensive study of a low-mass star-forming region,L1251B, at wavelengths from the near-infrared to the millimeter. L1251B, where only one protostar, IRAS 22376+745…