Results 41 to 50 of about 478 (176)

29SiO and 30SiO J = 1→0 maser signatures in Galactic asymptotic giant branch stars

Astronomy & Astrophysics
Context.J = 1→0 SiO masers at 43 GHz have a well-established distinctive signature in asymptotic giant branch (AGB) stars. 28SiO transitions typically dominate these spectra, with the v = 1 and v = 2 emission being especially prominent and ubiquitous ...
Lewis M. O., Sjouwerman L. O., Pihlström Y. M., van Langevelde H. J., Bhattacharya R., Stroh M. C.   +5 more
doaj   +1 more source

Luminosity Outburst of a High-mass Young Stellar Object Triggered by the Surrounding Radiation Field

The Astrophysical Journal Letters, 2023
We present observations of the 6.7 GHz methanol and 4.8 GHz formaldehyde masers toward the high-mass young stellar object G24.33+0.14 (hereafter G24). Our observations were conducted from 2019 to 2021 using the Shanghai Tianma 65 m Radio Telescope and ...
Jun-Ting Liu, Xi Chen, Xiao-Dian Chen, Zhi-Wei Chen, Shi-Min Song, You-Xin Wang, Yan-Kun Zhang, Zhang Zhao, Bin Li, Bo Xia, Zhi-Qiang Shen   +10 more
doaj   +1 more source

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

Biological Reviews, Volume 101, Issue 3, Page 1091-1119, June 2026.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson, Ellen Wohl, Laura L. Govers, Oscar Franken, Tjeerd J. Bouma, Han Olff, Britas Klemens Eriksson, Maryann S. Watson, Luísa M.S. Borges, Tjisse van der Heide   +9 more
wiley   +1 more source

Long-term Simultaneous Monitoring Observations of SiO and H2O Masers toward the Mira Variable WX Serpentis

The Astrophysical Journal Supplement Series
We present the results from long-term simultaneous monitoring observations of SiO and H _2 O masers toward the Mira variable star WX Serpentis. This study has been conducted with 21 m single-dish radio telescopes of the Korean VLBI Network from 2009 June
Jang-Ho Lim, Jaeheon Kim, Se-Hyung Cho, Hyosun Kim, Dong-Hwan Yoon, Seong-Min Son, Kyung-Won Suh   +6 more
doaj   +1 more source

On the Detection of Low‐Frequency Planetary Radio Emission With an Orbiting Interferometer

Radio Science, Volume 61, Issue 6, June 2026.
Abstract The magnetized planets of the outer Solar System produce kilometric radio emissions at very low frequencies (<1 ${< } 1\,$MHz). They reveal the planetary magnetic dynamics and their interaction with the solar wind. Those radio emissions can also serve as a proxy for interplanetary space weather monitoring.
E. Rouillé, B. Cecconi, B. Segret, J. N. Girard, A. Loh   +4 more
wiley   +1 more source

On the theory of astronomical masers - II. Polarization of maser radiation [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
In this paper we investigate the polarization property of the radiation amplified by astronomical masers in the presence of a strong magnetic field. Our model explicitly takes into account the broadband nature of the radiation field and the interaction of the radiation with the maser transition J=1--0. The amplification of different realisations of the
openaire   +2 more sources

Frequency Standard Contributions to Limitations on the Signal‐to‐Noise Ratio in Very Long Baseline Interferometric Observations

Radio Science, Volume 61, Issue 6, June 2026.
Abstract Since its observation in 2019, the first image of a super‐massive black hole using Very Long Baseline Interferometry (VLBI) with an Earth‐scale baseline has generated much scientific and public interest. Work is now underway to extend the baseline into space to obtain higher image resolution.
E. A. Burt, T. A. Ely, G. C. Bower, T. J. W. Lazio, M. Anderson, S. Hernandez   +5 more
wiley   +1 more source

On the theory of astronomical masers - I. Statistics of maser radiation [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
In this paper we re-analyse the amplification process of broadband continuum radiation by astronomical masers in one-dimensional case. The basic equations appropriate for the scalar maser and the random nature of the maser radiation field are derived from basic physical principles.
openaire   +2 more sources

Phosphate starvation induces root cell‐type‐specific transcriptional responses and alternative splicing

New Phytologist, Volume 250, Issue 5, Page 3212-3229, June 2026.
Summary Phosphate (Pi) is an essential nutrient for plant growth, and understanding how Arabidopsis thaliana root cells respond to Pi deficiency is crucial to decipher whole plant responses. We perform high‐resolution transcriptomic profiling across five distinct root cell types, identifying differentially expressed genes (DEGs) and differential ...
Mary‐Paz González‐García, Mónica Lanza, Victoria Baca‐González, Estefano Bustillo‐Avendaño, Laura Serrano‐Ron, Sara González‐Bodi, Jose M. García‐Mina, Ángel M. Zamarreño, María Garnica, Miguel A. Moreno‐Risueno, Elena Caro, Juan C. del Pozo   +11 more
wiley   +1 more source

Predicting Galactic OH Masers from Dense Clump Properties with Neural Networks and Generalized Linear Models

Galaxies
We develop predictive models for OH maser occurrence in Galactic star-forming regions by integrating dense-clump physical properties from the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) and Herschel Infrared Galactic Plane Survey (Hi-GAL ...
Dmitry A. Ladeyschikov, Elena A. Filonova, Anton I. Vasyunin   +2 more
doaj   +1 more source