Results 81 to 90 of about 4,740 (197)

Gaussian Spectral Line Profiles of Astrophysical Masers

The Astrophysical Journal, 2002
4 pages with 3 figures embedded in paper; uses AASTEX with emulateapj5.sty; accepted for publication in ApJ (Letters)
Watson, W. D., Sarma, A. P., Singleton, M. S.   +2 more
openaire   +2 more sources

Investigating the Hot Zone Developed Under Short‐Circuiting Conditions and the Coupled Magnetosphere‐Ionosphere (M‐I) System for the Subauroral Arc's Inner‐Magnetosphere Generation Environment

Journal of Geophysical Research: Space Physics, Volume 129, Issue 6, June 2024.
Abstract Based on correlated magnetosphere‐ionosphere (M‐I) conjugate observations of seven events, we study the hot zone developed under short‐circuiting conditions leading (a) to the development of outward Subauroral Polarization Streams (SAPS) or Subauroral Ion Drifts (SAID) electric (E) field and (b) to the various subauroral arcs' absence or ...
Ildiko Horvath, Brian C. Lovell
wiley   +1 more source

Lorentz violation bounds from torsion trace fermion sector and galaxy M 51 data and chiral dynamos

European Physical Journal C: Particles and Fields, 2017
Earlier we have computed a Lorentz violation (LV) bound for torsion terms via galactic dynamos and found bounds similar to the one obtained by Kostelecky et al. (Phys Rev Lett 100:111102, 2008) which is of the order of $$10^{-31}$$ 10 - 31 GeV.
L. C. Garcia de Andrade
doaj   +1 more source

Model of the W3(OH) environment based on data for both maser and 'quasi-thermal' methanol lines

, 2004
In studies of the environment of massive young stellar objects, recent progress in both observations and theory allows a unified treatment of data for maser and 'quasi-thermal' lines.
A.M. Sobolev, A.M. Sobolev, A.M. Sobolev, A.M. Sobolev, Andrei M. Sobolev, C. Gwinn, Dinah M. Cragg, E.C. Sutton, E.C. Sutton, Edmund C. Sutton, F. Wyrowski, F. Wyrowski, K.M. Menten, Peter D. Godfrey, T.L. Wilson, V. Minier, V.I. Slysh, Yu.A. Shchekinov   +17 more
core   +1 more source

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

Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1

The Astronomical Journal
The high-mass young stellar object G358.93-0.03-MM1 underwent a rapid accretion burst event from 2019 January to June, resulting in flares observed in most class II methanol maser transitions starting in mid-January.
Dan Miao, Xi Chen, Olga S. Bayandina, Andrej M. Sobolev, Wan-jun Li, Koichiro Sugiyama   +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

Unveiling Ionized Jet Morphologies: Subarcsecond VLA Observations of Compact Radio Sources

The Astronomical Journal
We present subarcsecond ( θ ∼ 0 $\mathop{.}\limits^{\unicode{x02033}}$ 1) resolution VLA 1.3 cm continuum and 22.2 GHz H _2 O maser observations toward 15 compact radio continuum sources with rising spectral index and eight string-like radio continuum ...
Tatiana M. Rodríguez, Peter Hofner, Emmanuel Momjian, Esteban D. Araya, Ananay Sethi, Viviana Rosero   +5 more
doaj   +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

Accurate OH maser positions II. the Galactic Center region

, 2018
We present high spatial resolution observations of ground-state OH masers, achieved using the Australia Telescope Compact Array (ATCA). These observations were conducted towards 171 pointing centres, where OH maser candidates were identified previously ...
Breen, Shari L., Dawson, J. R., Ellingsen, Simon P., Green, James A., Gómez, José F., Imai, Hiroshi, Qiao, Hai-Hua, Shen, Zhi-Qiang, Walsh, Andrew J.   +8 more
core   +1 more source