MASERS

作品数:35被引量:7H指数:2
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Observational characteristics of SiO masers around VX Sgr
《Research in Astronomy and Astrophysics》2020年第12期196-204,共9页Jiang-Bo Su Zhi-Qiang Shen Xi Chen Jing Liu Yan Wang Yi-Bin Zhao 
supported by the National Natural Science Foundation of China(Grant Nos.U1431125 and U1631106);the Science and Technology Innovation Program of Shanxi Province(2019L0876);Yuncheng University(YQ-2019016)。
SiO maser VLBA observations toward VX Sgr are performed at five epochs, and lots of maser spots are obtained. We make a statistical analysis on these spots. It is shown that the apparent sizes and the fluxes of maser ...
关键词:MASERS stars:individual(VX Sgr) techniques:interferometric TURBULENCE 
Database of molecular masers and variable stars
《Research in Astronomy and Astrophysics》2019年第3期13-20,共8页Andrej M.Sobolev Dmitry A. Ladeyschikov Jun-ichi Nakashima 
funded by the Russian Foundationfor Basic Research through research project 18-32-00605;supported by Russian Science Foundation grant18-12-00193;supported by Act 211 of theGovernment of the Russian Federation, agreement No.02.A03.21.0006
We present the database of maser sources in H2 O, OH and Si O lines that can be used to identify and study variable stars at evolved stages. Detecting the maser emission in H2 O, OH and Si O molecules toward infrared-...
关键词:catalogs-astronomical DATABASES STARS VARIABLES general-stars masers-physical data and processes 
Study of variable stars associated with maser sources: G025.65+1.05
《Research in Astronomy and Astrophysics》2019年第3期47-52,共6页Andrey M.Sobolev Anastasia P.Bisyarina Stanislav Yu.Gorda Andrey M.Tatarnikov 
supported by the Russian ScienceFoundation (Grant 18-12-00193);supported by Russian Foundation for Basic Research(Grant 18-32-00314)
We report variation of K-band infrared(IR) emission in the vicinity of the G025.65+1.05 water and methanol maser source. New observational data were obtained with the 2.5 m telescope at the Caucasian Mountain Observat...
关键词:techniques photometric-infrared stars-masers 
The potential of FAST in detecting celestial hydroxyl masers and related science topics
《Research in Astronomy and Astrophysics》2019年第2期65-70,共6页Jiang-Shui Zhang Di Li Jun-Zhi Wang Qing-Feng Zhu Juan Li 
supported by the China Ministry of Science and Technology under the National Basic Research Program of China (973 program, 2012CB821800);the National Natural Science Foundation of China (Nos. 11473007, 11373038 and 11590782);supported by the Strategic Priority Research Program (No. XDB09000000) from the Chinese Academy of Sciences
The Five-hundred-meter Aperture Spherical radio Telescope(FAST) will make contributions to studies of Galactic and extragalactic masers. This telescope, with construction finished and now undergoing commissioning, has...
关键词:MASERS instrumentation:sensitivity instrumentation:detectability SKY density galaxies:interactions 
The spiral structure of the Milky Way被引量:3
《Research in Astronomy and Astrophysics》2018年第12期9-28,共20页Ye Xu Li-Gang Hou Yuan-Wei Wu 
sponsored by the MOST (Grant No.2017YFA0402701);the NSFC (Grant Nos.11873019, 11673066 and 11503033);the CAS (Grant No.QYZDJ-SSW-SLH047);the Youth Innovation Promotion Association of CAS;supported by the Key Laboratory for Radio Astronomy, CAS;the Open Project Program of the Key Laboratory of FAST, NAOC, CAS;Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement
The morphology and kinematics of the spiral structure of the Milky Way are long-standing problems in astrophysics.In this review we firstly summarize various methods with different tracers used to solve this puzzle.Th...
关键词:Galaxy:structure Galaxy:kinematics and dynamics MASERS techniques:high angular resolution ASTROMETRY stars:formation 
An H2O Maser survey towards BGPS sources in the Outer Galaxy
《Research in Astronomy and Astrophysics》2016年第6期29-46,共18页Hong-Wei Xi Jian-Jun Zhou Jarken Esimbek Gang Wu Yu-Xin He Wei-Guang Ji Xiao-Ke Tang Ye Yuan 
funded by the National Natural Science Foundation of China under grant 11373062;supported by the National Basic Research Program of China (973 program,2012CB821802);the National Natural Science Foundation of China under grant Nos.11433008,11303081 and 10873025;the Program of the Light in China’s Western Region (LCRW) under grant Nos.RCPY201202 and XBBS-2014-24
We performed an H20 maser survey towards 274 Bolocam Galactic Plane Survey (BGPS) sources with 85° 〈 1 〈 193° using the Nanshan 25 m radio telescope. We detected 25 H2O masers, and five of them are new detection...
关键词:masers -- radio lines: ISM -- stars: formation 
Disk-Outflow Models as Applied to High Mass Star Forming Regions through Methanol and Water Maser Observations
《International Journal of Astronomy and Astrophysics》2014年第4期571-597,共27页Hontas F. Farmer 
As the recent publication by Breen et al. (2013) found, Class II methanol masers are exclusively associated with high mass star forming regions. Based on the positions of the Class I and II methanol and H2O masers, UC...
关键词:MASERS METHANOL Massive STAR Formation Stars: Evolution Stars: DISTANCES 
A revised rotation curve of the Milky Way with maser astrometry
《Research in Astronomy and Astrophysics》2013年第7期849-861,共13页Xiao-Sheng Xin Xing-Wu Zheng 
Supported by the National Natural Science Foundation of China(Grant Nos.11133008 and J1210039)
We reconstruct the rotation curve of the Milky Way using the new trigono-metric parallax and proper motion data for masers in 43 high-mass star-forming re-gions obtained by VLBI, as well as the existing data from the ...
关键词:Galaxy: structure - Galaxy: bulge - Galaxy: disk - Galaxy: halo-dark matter - masers 
12 GHz methanol maser outflow from the massive star-forming region: G35.20-0.74
《Research in Astronomy and Astrophysics》2013年第7期815-826,共12页Qing-Zeng Yan Bo Zhang Zheng-Hong Tang Xing-Wu Zheng 
supported by the National Science Foundation of China (Grant Nos.11073046 and 11133008)
We report the internal proper motions of 12 GHz methanol masers in mas-sive star-forming region G35.20-0.74 observed with the Very Long Baseline Array (VLBA) at four epochs spanning about 1.5 yr. Two groups of maser...
关键词:masers - ISM: molecules - stars: kinematics - stars: individual(G35.20-0.74) - stars: winds OUTFLOWS 
Analysis and design of the taper in metal-grating periodic slow-wave structures for rectangular Cerenkov masers
《Chinese Physics B》2012年第5期662-668,共7页陈晔 赵鼎 王勇 舒雯 
Project supported by the National Natural Science Foundation of China (Grant No. 60801031)
The hybrid-mode dispersion equation of the metal-grating periodic slow-wave structure for a rectangular Cerenkov maser is derived by using the Borgnis function and field-matching methods.An equivalent-circuit model fo...
关键词:rectangular Cerenkov maser Borgnis function method equivalent-circuit method HFSS TAPER 
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