Results 41 to 50 of about 5,254,583 (200)

Water vapor masers in stars departing from the AGB

, 2002
The 22 GHz water vapor masers of four “non-variable” OH/IR stars considered to be young Proto-Planetary Nebulae (PPNs) were monitored for more than 10 years. In two of them, OH 15.7+0.
D. Engels
core   +1 more source

A ‘water spout’ maser jet in S235AB-MIR [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We report on annual parallax and proper motion observations of H2O masers in S235AB-MIR, which is a massive young stellar object in the Perseus Arm. Using multi-epoch VLBI astrometry we measured a parallax of pi = 0.63 +- 0.03 mas, corresponding to a trigonometric distance of D = 1.56+-0.09 kpc, and source proper motion of ( u alpha cos d , u d) = (0 ...
Burns, Ross A., Imai, Hiroshi, Handa, Toshihiro, Omodaka, Toshihiro, Nakagawa, Akiharu, Nagayama, Takumi, Ueno, Yuji   +6 more
openaire   +2 more sources

Statistical Scale Analyses of a Diurnal Periodicity in Auroral Kilometric Radiation, Observed by Wind/WAVES

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The Earth's strongest natural radio emission is Auroral Kilometric Radiation (AKR), which is correlated with auroral intensity, and is a barometer for space weather. AKR is generated by the electron cyclotron maser instability, with sources on auroral field lines. Previous work on AKR and radio emissions from other planets (or stars) points to
Alexandra Ruth Fogg, S. Wu, C. M. Jackman, S. J. Walker, M. J. Rutala, C. K. Louis, S. M. Ivanov, L. Lamy, J. E. Waters, D. K. Whiter   +9 more
wiley   +1 more source

Astrophysical masers.

, 2004
A review on strong masers and their assocn. with star formation, recent VLBI measurements of the structure and dynamics of methanol masers, the masers in the envelopes of evolved stars, and extragalactic masers. [on SciFinder (R)
Booth, R. S., Booth, Roy, Diamond, P. J., Diamond, P.J., P. J. Diamond, R. S. Booth   +5 more
core   +1 more source

Diagnostics of a nuclear starburst: water and methanol masers [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
We test models of starburst driven outflows using observations of the 22.2 GHz H$_2$O and 36.2 GHz class I CH$_3$OH maser lines. We have observed the starburst galaxy NGC 253 using the Karl G. Jansky Very Large Array. We present evidence for entrainment of star-forming dense-molecular gas in the outflow of NGC 253.
Mark D Gorski, Jürgen Ott, Richard Rand, David S Meier, Emmanuel Momjian, Eva Schinnerer, Simon P Ellingsen   +6 more
openaire   +3 more sources

Coincident ENA and Narrowband Radio Emissions as Diagnostics of Inward Plasma Transport at Saturn

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Saturn's kilometric radiation (SKR) and Energetic Neutral Atom (ENA) emissions are important diagnostics of the planet's magnetospheric dynamics, intensifying during global plasma injections and displaying characteristic planetary periodicity. Related to the SKR emissions are myriametric narrowband radio emissions that typically appear in the ...
J. Kinrade, S. V. Badman, S. Y. Wu, C. Paranicas, C. M. Jackman, L. S. Clare, C. K. Louis   +6 more
wiley   +1 more source

VLA Observations of a Sample of Low-Brightness 6.7 GHz Methanol Masers [PDF]

, 2018
In 2014 we conducted a survey for 6.7 GHz methanol masers with the Arecibo Tele- scope toward far infrared sources selected from the Hi-GAL catalog of massive cores.
Armstrong, Jason, Araya, Esteban D., OLMI, LUCA   +2 more
core   +1 more source

ALOHA IRDCs molecular line follow-up

Astronomy & Astrophysics
Context. Infrared-dark clouds (IRDCs) are ideal sites for investigating the initial conditions of massive star and cluster formation. The A Lei Of the Habitat and Assembly of Infrared Dark Clouds (ALOHA IRDCs), a James Clerk Maxwell Telescope Large ...
Xie Jinjin, Yan Yaoting, Ren Zhiyuan, Esimbek Jarken, Li Di, Duan Yan, Fuller Gary A., Peretto Nicolas, Wu Jingwen, Yang Wenjin, Henkel Christian, Chen Xuepeng, He Qianru, Wang Yongxiong, Qiu Keping, Tang Ningyu, Peng Sijia, Tsai Chao-Wei, Ngoc Diep Pham, Liu Hauyu Baobab, Kramer Busaba, Kim Kee-Tae, Tatematsu Ken’ichi, Rawlings Mark G., Donaire Maria Jesus Jimenez, Luo Gan, Lyu Xin, Liu Jiawei, Xing Yuchen, Liu Sheng-yuan, Sugiyama Koichiro, Yadav Ram K., Baan Willem A., Macleod Gordon, Sanhueza Patricio, Chen Long-Fei, Lee Chang Won, Su Yang, Wang Chen, Wang Ruili, Xia Ruilin, Sobolev Andrej, Ladeyschikov Dmitry A., Eden David, Kwon Woojin, Xu Fengwei, Ma Hongjun, Harsono Daniel, Jiao Sihan, Smith Rowan, Wang Ke, Liu Tie, Li Guangxing, Guan Xin, He Yuxin, Li Dalei, Tang Xindi, Luo Chunsheng, Zhou Jianjun, Asanok Kitiyanee, Bintley Dan, Vivien Chen Huei-Ru, Chen En, Eswaraiah Chakali, Duarte-Cabral Ana, Feng Siyi, Furuya Ray S., Hirota Tomoya, Imanaly Ernar, Jiang Xue-Jian, Jandaolet Qaynar, Jengis Abay, Ji Weiguang, Kuan Yi-Jehng, Lee Min-Young, Li Chong, Li Cuihuan, Li Guodong, Li Hua-bai, Li Jiasheng, Li Yujie, Liu Mengting, Liu Kuan-Yu, Liu Shu, Liu Rong, Luo Yongquan, Ma Yingxiu, Mairs Steve, Nakamura Fumitaka, Parsons Harriet, Pineda Jaime, Shen Hailiang, Sun Mingke, Sailanbek Serikbek, Shaimoldin Nurzhan, Tang Ya-Wen, Tegegne Antneh Gashaye, Tursun Kadirya, White Glenn J., Wu Gang, Xia Jifeng, Xiong Yuanzhen, Yu Naiping, Yue Nannan, Yang Xinyu, Yang Yuebin, Zhang Miaomiao, Zhang Chao, Zhang Shiyu, Zhou Dongdong, Zhao Qiao, Zhao Xiang   +111 more
doaj   +1 more source

Low Frequency Extensions of Cyclotron Maser Instability‐Generated Radio Emission: A Statistical View From Cassini at Saturn

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The Cassini spacecraft spent 13 years orbiting Saturn, quasi‐continuously measuring Saturn's radio emissions. One of the key elements of the radio spectrum at Saturn is the Saturn Kilometric Radiation (SKR), and several studies have been written on events called Low Frequency Extensions (LFEs) which represent strong, continuous extensions of ...
C. M. Jackman, A. R. Fogg, S. W. H. Cowley, G. Provan, H. Adamski, N. M. Besch, D. M. Hollman, S. Walker, M. J. Rutala, L. Lamy, C. K. Louis, E. P. O’Dwyer   +11 more
wiley   +1 more source

Discovery of SiO masers in the Water Fountain source, IRAS 16552-3050 [Elektronisk resurs]

, 2022
We report new detections of SiO ν = 1 and ν = 2 J = 1 → 0 masers in the water fountain source IRAS 16552-3050, which was observed with the Nobeyama 45 m telescope from March 2021 to April 2023.
Amada, Kei,, Orosz, G.,, Hamae, Yuhki,, Shum, K. Y.,, Uscanga, L.,, Gomez, J. F.,, Imai, H.,, Tafoya, Daniel,, Nakashima, Keisuke,, Burns, R. A.,   +9 more
core   +1 more source