Results 111 to 120 of about 4,740 (197)

Field and intensity correlations: the Siegert relation from stars to quantum emitters. [PDF]

Eur Phys J D At Mol Opt Phys, 2022
Lassègues P, Biscassi MAF, Morisse M, Cidrim A, Matthews N, Labeyrie G, Rivet JP, Vakili F, Kaiser R, Guerin W, Bachelard R, Hugbart M.   +11 more
europepmc   +1 more source

Practical Limitations on Astrophysical Observations of Methanol to Investigate Variations in the Proton-to-Electron Mass Ratio

, 2011
The possibility of using astrophysical observations of rotational transitions in the methanol molecule to measure, or constrain temporal and spatial variations in the proton-to-electron mass ratio (mu) has recently been investigated by several groups ...
Breen, Shari, Ellingsen, Simon, Voronkov, Maxim   +2 more
core   +1 more source

Survey of Oxygen-rich AGB Stars Using the KVN 4 Receiving Bands—SMASTES. I.

The Astronomical Journal
Simultaneous observations of 19 H _2 O and SiO maser and thermal lines were performed toward 155 M-type oxygen-rich (O-rich) AGB stars. We used the upgraded four-band (22/43/86/129 GHz) wide receiving system of the Korean VLBI Network (KVN).
Hyeon Baek, Se-Hyung Cho, Jaeheon Kim, Seung-Min Son, Dong-Hwan Yoon, Kyung-Won Suh   +5 more
doaj   +1 more source

A database of circumstellar OH masers

, 2015
We present a new database of circumstellar OH masers at 1612, 1665, and 1667 MHz in the Milky Way galaxy. The database (version 2.4) contains 13655 observations and 2341 different stars detected in at least one transition.
Bunzel, F., Engels, D.
core   +1 more source

Cumulene carbenes in TMC-1: Astronomical discovery of <i>l</i>-H₂C₅ ^★. [PDF]

Astron Astrophys, 2021
Cabezas C, Tercero B, Agúndez M, Marcelino N, Pardo JR, de Vicente P, Cernicharo J.   +6 more
europepmc   +1 more source

The Protocluster G18.67+0.03: A Test Case for Class I Methanol Masers as Evolutionary Indicators for Massive Star Formation

, 2012
We present high angular resolution Submillimeter Array (SMA) and Karl G. Jansky Very Large Array (VLA) observations of the massive protocluster G18.67+0.03.
Brogan, C. L., Chandler, C. J., Cyganowski, C. J., Friesen, R. K., Hunter, T. R., Indebetouw, R., Zhang, Q.   +6 more
core   +1 more source

Time variability of astrophysical masers [PDF]

Monthly Notices of the Royal Astronomical Society, 1978
M. Salem, M. S. Middleton
openaire   +1 more source

Mechanisms for the circular polarization of astrophysical OH masers in star-forming regions and the inferred magnetic fields [PDF]

Results of further calculations to explore the cause for the circular polarization of astrophysical OH masers in regions of star formation are presented.
Deguchi, Shuji, Watson, William D.
core   +1 more source

Coherent Radio Emission from “Main-sequence Radio Pulse Emitters”: A New Stellar Diagnostic to Probe 3D Magnetospheric Structures

The Astrophysical Journal
Main-sequence radio pulse emitters (MRPs) are magnetic early-type stars that produce coherent radio emission observed in the form of periodic radio pulses. The emission mechanism behind this is the electron-cyclotron maser emission (ECME).
Barnali Das, Poonam Chandra, Véronique Petit   +2 more
doaj   +1 more source

Cloud-cloud collision as drivers of the chemical complexity in Galactic Centre molecular clouds. [PDF]

Mon Not R Astron Soc, 2020
Zeng S, Zhang Q, Jiménez-Serra I, Tercero B, Lu X, Martín-Pintado J, de Vicente P, Rivilla VM, Li S.   +8 more
europepmc   +1 more source