Results 81 to 90 of about 440 (199)

A New Type of Jovian Hectometric Radiation Powered by Monoenergetic Electron Beams

Journal of Geophysical Research: Space Physics, Volume 129, Issue 5, May 2024.
Abstract In this study, we statistically analyze the Jovian auroral radio sources detected in situ by Juno/Waves at frequencies f below the electron cyclotron frequency fce. We first conduct a survey of Juno/Waves data over 1–40 MHz from 2016 to 2022. The 15 detected HectOMetric (HOM) sources all lie within 1–5 MHz and are both less frequent than the ...
B. Collet, L. Lamy, C. K. Louis, P. Zarka, R. Prangé, P. Louarn, W. S. Kurth, F. Allegrini   +7 more
wiley   +1 more source

FIRST INTERFEROMETRIC IMAGES OF THE 36 GHz METHANOL MASERS IN THE DR21 COMPLEX

, 2010
Class I methanol masers are believed to be produced in the shock-excited environment around star-forming regions. Many authors have argued that the appearance of various subsets of class I masers may be indicative of specific evolutionary stages of star ...
Pihlström, Ylva M., Vladimir Strelnitski, Tyler L. Bourke, Vincent L. Fish, Loránt O. Sjouwerman, Fish, Vincent L., Strelnitski, Vladimir, Sjouwerman, Loránt O., Preethi Pratap, Ylva M. Pihlström, Bourke, Tyler L., Muehlbrad, Talitha C., Pratap, Preethi   +12 more
core   +1 more source

The distance to G59.7+0.1 [PDF]

, 2007
We have measured the distance to the high-mass star-forming region G59.7+0.1, which harbors the far-infra-red source IRAS 19410+2336. The distance is 2.20 ± 0.11 kpc and was determined by triangulation using Very Long Baseline Array (VLBA) observations ...
Reid, M. J., MOSCADELLI, Luca, Xu, Y., Menten, K. M., Zheng, X. W., Brunthaler, A.   +5 more
core   +1 more source

Testing OH Megamaser Identification Methods in H i Surveys: Updated Source-flagging Algorithms and New Detections in ALFALFA

The Astrophysical Journal
OH megamasers (OHMs) are extragalactic masers found primarily in gas-rich galaxy major mergers. To date, only ∼120 OHMs have been cataloged since their discovery in 1982, and efforts to identify distinct characteristics of OHM host galaxies have remained
Hayley Roberts, Jeremy Darling, Kelley M. Hess, Andrew J. Baker, Elizabeth A. K. Adams, Helga Dénes   +5 more
doaj   +1 more source

Feasibility of Passive Sounding of Uranian Moons Using Uranian Kilometric Radiation

Earth and Space Science, Volume 11, Issue 2, February 2024.
Abstract We present a feasibility study for passive sounding of Uranian icy moons using Uranian Kilometric Radio (UKR) emissions in the 100–900 kHz band. We provide a summary description of the observation geometry, the UKR characteristics, and estimate the sensitivity for an instrument analogous to the Cassini Radio Plasma Wave Science (RPWS) but with
A. Romero‐Wolf, G. Steinbrügge, J. Castillo‐Rogez, C. J. Cochrane, T. A. Nordheim, K. L. Mitchell, N. S. Wolfenbarger, D. M. Schroeder, S. Peters   +8 more
wiley   +1 more source

EXPANDED VERY LARGE ARRAY DETECTION OF 44.1 GHz CLASS I METHANOL MASERS IN SAGITTARIUS A

, 2011
We report on the detection of 44 GHz Class I methanol (CH[subscript 3]OH) maser emission in the Sagittarius A (Sgr A) complex with the Expanded Very Large Array (EVLA).
Sjouwerman, L. O., Y. M. Pihlström, V. L. Fish, Pihlstrom, Y. M., Fish, Vincent L., L. O. Sjouwerman   +5 more
core   +1 more source

Surveys of the Milky Way and Magellanic System in the λ21-cm line of atomic hydrogen

EPJ Web of Conferences, 2012
In the next three years, surveys of the Northern and Southern skies using focal plane arrays on aperture synthesis radio telescopes will lead to a breakthrough in our knowledge of the warm and cool atomic phases of the interstellar medium and their ...
Dickey J.M.
doaj   +1 more source

Proper Motion of Water Masers Associated with IRAS 21391+5802: Bipolar Outflow and an AU‐Scale Dusty Circumstellar Shell

, 2017
We present VLBA observations of water maser emission associated with the star forming region IRAS 21391+5802, which is embedded in a bright rimmed cometary globule in IC1396.
Zhang, Qizhou, Goldsmith, Paul F., Greenhill, Lincoln, Herrnstein, James, Moran, James, Patel, Nimesh, Ho, Paul T. P.   +6 more
core   +1 more source

Dynamics of SiO Masers around VX Sgr

, 2018
We performed Very Long Baseline Array (VLBA) observations of SiO masers ( ) toward VX Sgr from 2006 July to 2008 August. With the application of a phase reference technique, the accurate relative positions of maser spots at the two transitions can ...
Jiang,D. R., Su,J. B., Shen,Z.-Q., Chen,X.   +3 more
core   +1 more source

The parallax and 3D kinematics of water masers in the massive star-forming region G034.43+0.24

, 2023
We report a trigonometric parallax measurement of 22 GHz water masers in the massive star-forming region G034.43+0.24 as part of the Bar and Spiral Structure Legacy (BeSSeL) Survey using the Very Long Baseline Array. The parallax is 0.330$\pm$50.018 mas,
Reid, M. J., Zheng, Xingwu, MOSCADELLI, Luca, Zheng, X., Sun, Yan, Wang, Guangli, Xu, Shuangjing, Xu, Ye, Wen, S., Zhang, B., Zhang, Bo, Menten, Karl M., Reid, M., Wen, Shiming, Moscadelli, L., Mai, X., Zhang, J., Zhang, Jingdong, Xu, S., Luo, Q., Xu, Y., Wang, G., Chen, W., Brunthaler, A., Chen, Wen, Luo, Qiuyi, Menten, K., Brunthaler, Andreas, Mai, Xiaofeng, Sun, Y.   +29 more
core   +1 more source