Global 21 cm Signal Extraction from Foreground and Instrumental Effects. III. Utilizing Drift-scan Time Dependence and Full Stokes Measurements

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

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Instrumental effects on spectrum measurement from a semiconductor diode biased below threshold

IEE Proceedings J Optoelectronics ◽

10.1049/ip-j.1993.0039 ◽

1993 ◽

Vol 140 (4) ◽

pp. 243 ◽

Cited By ~ 3

Author(s):

J. Chen ◽

B. Luo ◽

L. Wu ◽

Y. Lu

Keyword(s):

Semiconductor Diode ◽

Instrumental Effects ◽

Spectrum Measurement

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Influence of the hyperfine structure on the time-dependence of Mössbauer transmission

Journal de Physique ◽

10.1051/jphys:019850046080138700 ◽

1985 ◽

Vol 46 (8) ◽

pp. 1387-1393 ◽

Cited By ~ 3

Author(s):

D.L. Balabanski ◽

E.I. Vapirev ◽

P.S. Kamenov

Keyword(s):

Time Dependence ◽

Hyperfine Structure

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Time Dependence of Whole Blood Aggregation in Response to Platelet Activating Factor (PAF)

Thrombosis and Haemostasis ◽

10.1055/s-0038-1642746 ◽

1988 ◽

Vol 59 (02) ◽

pp. 162-163 ◽

Cited By ~ 5

Author(s):

R R Taylor ◽

J Strophair ◽

M Sturm ◽

R Vandongen ◽

L J Beilin

Keyword(s):

Time Dependence ◽

Whole Blood ◽

Platelet Rich Plasma ◽

Platelet Activating Factor ◽

Sampling Time ◽

Blood Sampling ◽

Impedance Aggregometry

SummaryThe aggregation/adhesion response to platelet activating factor (PAF) was studied in diluted whole blood by impedance aggregometry. The extent of aggregation varied directly with the interval between blood sampling and aggregation measurement over the first 30 minutes from sampling, then remained stable for the next 60 minutes of observation. This is an effect opposite to that described for aggregation to PAF in platelet rich plasma which, however, cannot be studied soon after sampling. Time dependence of aggregation is important and comparative measurements should be made during the period of stable aggregability.

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