Results 31 to 40 of about 9,625 (210)

Spatiotemporal evolution of radio wave pump-induced ionospheric phenomena near the fourth electron gyroharmonic [PDF]

, 2007
On 12 November 2001, the European Incoherent Scatter (EISCAT) high-frequency (HF) radio wave transmitter facility, operating in O-mode at 5.423 MHz with 550 MW effective radiated power, produced artificial optical rings which appeared immediately at ...
Ashrafi, M., Isham, B., Kaila, K., Kosch, Mike J.   +3 more
core   +1 more source

CalFUSE v3: A Data-Reduction Pipeline for the Far Ultraviolet Spectroscopic Explorer

, 2007
Since its launch in 1999, the Far Ultraviolet Spectroscopic Explorer (FUSE) has made over 4600 observations of some 2500 individual targets. The data are reduced by the Principal Investigator team at the Johns Hopkins University and archived at the ...
A. W. Fullerton, B. Godard, D. Massa, D. J. Lindler, D. J. Sahnow, J. Dupuis, J. W. Kruk, J.‐C. Hsu, M. E. Kaiser, M. L. Romelfanger, P. Sonnentrucker, P. E. Barrett, R. D. Robinson, S. Lacour, T. Civeit, Tremsin A. S., W. V. Dixon   +16 more
core   +2 more sources

FUSE Spectra of the Black Hole Binary LMC X-3 [PDF]

, 2003
Far-ultraviolet spectra of LMC X-3 were taken covering photometric phases 0.47 to 0.74 in the 1.7-day orbital period of the black-hole binary (phase zero being superior conjunction of the X-ray source).
A. P. Cowley, D. Crampton, J. B. Hutchings, K. Winter, Kuiper L., P. C. Schmidtke, van der Klis M.   +6 more
core   +2 more sources

Airglow

Eos, Transactions American Geophysical Union, 1971
The past 4 years have seen the continuation of considerable activity in airglow research. Patterns of changing emphasis are becoming clear, observations are tending to become more selective, and changes in technique have led to regular observations of dayglow, line widths in the nightglow, and observations in the middle and far ultraviolet, detection ...
openaire   +1 more source

Space-Based Limb-Imaging Spectrometer for Atmospheric O₂ Airglow Detection

Atmosphere
This paper presents a space-based limb-imaging spectrometer (LIS) for detecting atmospheric O2 airglow; it scans the atmosphere with a vertical range of 10–100 km and has a vertical resolution of 2 km. The LIS’s detection performance needs to be examined
Minjie Zhao, Haijin Zhou, Yu Jiang, Shuhua Huang, Xin Zhao, Yi Zeng, Jun Chen, Fenglei Liu, Xiaohan Qiu, Quan Zhang, Lei Zhu, Shimei Wang, Kai Zhan, Ge Yan, Fuqi Si   +14 more
doaj   +1 more source

Variability of the Brunt–Väisälä frequency at the OH^∗-airglow layer height at low and midlatitudes [PDF]

Atmospheric Measurement Techniques, 2020
Airglow spectrometers, as they are operated within the Network for the Detection of Mesospheric Change (NDMC; https://ndmc.dlr.de, last access: 1 November 2020), for example, allow the derivation of rotational temperatures which are equivalent to the ...
S. Wüst, M. Bittner, M. Bittner, J.-H. Yee, M. G. Mlynczak, J. M. Russell III   +5 more
doaj   +1 more source

The First Detections of the Extragalactic Background Light at 3000, 5500, and 8000A (II): Measurement of Foreground Zodiacal Light [PDF]

, 2001
We present a measurement of the absolute surface brightness of the zodiacal light (3900-5100A) toward a fixed extragalactic target at high ecliptic latitude based on moderate resolution (~1.3A per pixel) spectrophotometry obtained with the du Pont 2.5m ...
Baldwin J. H., Barry F. Madore, Beggs D. W., Dave J. V., de Bary E., de Bary E., Deepak A., Dumont R., East I. R., Elterman L., Frey A., Green A. E. S., Leinert Ch., Levasseur-Regourd A. C., Mattila K., Mattila K., Neckel Th., Neckel Th., Reach W. T., Rebecca A. Bernstein, Richter I., Roser S., Schiffer R., Slanger T. G., Staude H. J., Stone R. P. S., van Rhijn P. J., Weinberg J. L., Weiss-Wrana K., Wendy L. Freedman   +29 more
core   +2 more sources

Automated Detection and Tracking of Equatorial Plasma Bubbles Utilizing Global‐Scale Observations of the Limb and Disk (GOLD) 135.6 nm Data

Earth and Space Science, 2023
Equatorial plasma bubbles (EPBs) are regions of depleted plasma within the ionosphere that form during post‐sunset hours near the magnetic equator. EPBs tend to align with local geomagnetic field lines, extend hundreds of kilometers along geomagnetic ...
V. J. Adkins, S. L. England
doaj   +1 more source

Inversion of Wind and Temperature from Low SNR FPI Interferograms

Remote Sensing, 2023
The temperature and wind in the middle and upper atmosphere can be obtained by recording the Doppler shift and broadening of the airglow emission, which is reflected by the interference ring from a ground-based Fabry–Perot interferometer (FPI) system ...
Yafei Wei, Sheng-Yang Gu, Zhenlin Yang, Cong Huang, Na Li, Guoyuan Hu, Xiankang Dou   +6 more
doaj   +1 more source

Estimation of the vertical wavelength of atmospheric gravity waves from airglow imagery [PDF]

, 2011
In the summer of 2010, two imagers were installed in New Mexico with the objective of making stereoscopic observations of atmospheric gravity waves (AGWs).
Kanwar, Uday
core