scholarly journals A localised co-rotating auroral absorption event observed near noon using imaging riometer and EISCAT

1996 ◽  
Vol 14 (12) ◽  
pp. 1305 ◽  
Author(s):  
P. N. Collis ◽  
J. K. Hargreaves ◽  
G. P. White
Keyword(s):  
Absorption Event

Heights of Central Absorbing Regions for a Strong Auroral Absorption Event at Lower Latitude

Nature ◽  
1964 ◽  
Vol 203 (4950) ◽  
pp. 1160-1161
Author(s):  
J. S. KIM ◽  
J. D. KLEINKOPF
Keyword(s):  
Lower Latitude ◽  
Absorption Event

An absorption event in 4U/MXB 1820 - 30

1985 ◽  
Vol 298 ◽  
pp. 581 ◽  
Author(s):  
L. Cominsky ◽  
J. Simmons ◽  
S. Bowyer
Keyword(s):  
Absorption Event

POLAR-CAP ABSORPTION FOLLOWING THE SOLAR FLARE OF JULY 16, 1959

1961 ◽  
Vol 39 (12) ◽  
pp. 1882-1887
Author(s):  
Syed Ziauddin
Keyword(s):  
Solar Flare ◽  
Geomagnetic Field ◽  
Noise Level ◽  
Polar Cap ◽  
Short Term ◽  
Magnetic Screening ◽  
Cosmic Noise ◽  
Absorption Event

The polar-cap absorption event following the solar flare of July 16, 1959, is examined. Short-term recoveries of the cosmic noise level, associated with auroral disturbances, were observed at Saskatoon and Ottawa during the PCA event. It is suggested that these recoveries were due to a magnetic screening mechanism resulting from the interaction of the aurora producing plasma with the geomagnetic field.

scholarly journals An absorption event in the X-ray light curve of NGC 3227

2003 ◽  
Vol 342 (3) ◽  
pp. L41-L45 ◽  
Author(s):  
G. Lamer ◽  
P. Uttley ◽  
I. M. McHardy
Keyword(s):  
Light Curve ◽  
X Ray ◽  
Absorption Event

scholarly journals Actinide Speciation by Photothermal Spectroscopies: Instrumentation Development

1990 ◽  
Vol 212 ◽  
Author(s):  
J.M. Berg ◽  
C.D. Tait ◽  
D.E. Morris ◽  
W.H. Woodruff
Keyword(s):  
Signal Processing ◽  
Laser Excitation ◽  
Pulsed Laser ◽  
Analytical Signal ◽  
Waveform Analysis ◽  
Research Groups ◽  
Noise Sources ◽  
Processing Techniques ◽  
Signal Processing Techniques ◽  
Absorption Event

ABSTRACTPhotoacoustic spectroscopy using pulsed laser excitation is being developed by a number of research groups as one of the most promising methods for studying speciation of actinides in solution at environmentally relevant concentrations. We present details of a number of hardware and software techniques we have implemented which, once fully developed, we believe will improve the sensitivity of the method. Our approach is based on more extensive waveform analysis. While most signal processing techniques extract the analytical signal from only a small portion of the acoustic waveform produced in the detector by an absorption event, we describe two methods that use more of the waveform. Other methods of minimizing noise sources using both hardware and software are also described.

Quadruple conjugate pair observations of the sudden commencement absorption event on June 17, 1965

1972 ◽  
Vol 77 (28) ◽  
pp. 5602-5607 ◽  
Author(s):  
R. R. Brown ◽  
H. Leinbach ◽  
S.-I. Akasofu ◽  
V. M. Driatsky ◽  
R. J. Schmidt
Keyword(s):  
Sudden Commencement ◽  
Conjugate Pair ◽  
Absorption Event

Observations of unusually strong partial reflections in the auroral D-region during an absorption event

1977 ◽  
Vol 39 (11-12) ◽  
pp. 1333-1340 ◽  
Author(s):  
A Haug ◽  
E.V Thrane ◽  
K Bjørnå ◽  
A Brekke ◽  
O Holt
Keyword(s):  
D Region ◽  
Absorption Event
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