Polarimetry Measurements of the Moon

Schmude, Richard W.

doi:10.1007/978-3-319-05546-6_169-1

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…These values are smaller than those observed in previous work such as the measurements by Coyne and Pellicori 6 or Snow et al 7 This is expected because we recorded measurements in a spectral band across the VNIR and DoLP tends to decrease with wavelength. 6,14 Therefore, averaging signal across the VNIR results in a lower DoLP than measurements in narrow bands in the UV 7 or in the visible wavelengths.…”

Section: Discussionmentioning

confidence: 99%

Disk-resolved and disk-integrated polarization state of moonlight as a function of lunar phase

Venkatesulu,

Dabby,

Shaw

2023

Polarization Science and Remote Sensing XI

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To use moonlight as a source for on-orbit calibration of satellite instruments and for nighttime passive remote sensing, considerable effort has been made to develop and improve radiometric models of the Moon. However, to enable calibration of polarization-sensitive instruments and nighttime polarimetric remote sensing, the polarization state of moonlight must be known as well. While several observations of moonlight polarization have been published, there is no known database of disk-integrated polarization measurements or disk-resolved polarization images as a function of phase angle. We used a monochrome division-of-focal-plane polarization imager with a telescope (focal length of 2 m) and a telephoto lens (focal length of 300 mm) to record images of the degree and angle of linear polarization for lunar phases ranging from full Moon to about 15% full. We calculated the disk-integrated polarization state from the images. We present a plot of disk-integrated polarization state as a function of phase angle, which agrees well with similar plots published previously for small regions of the Moon. The disk-integrated degree of linear polarization (DoLP) reaches a maximum of approximately 8% at a phase angle near 100° and a minimum near 0% at a phase angle of 0°. We also present S0, DoLP, and angle of polarization (AoP) images and use them to explain the lunar locations where polarized light primarily originates. To our knowledge, the presented DoLP images are higher resolution than previously published DoLP images, and AoP images presented here have not yet been published.

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Section: Discussionmentioning

confidence: 99%

Disk-resolved and disk-integrated polarization state of moonlight as a function of lunar phase

Venkatesulu,

Dabby,

Shaw

2023

Polarization Science and Remote Sensing XI

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“…To remove possible systematic effects associated with particular bunch(es) in the process of filling, ramping up and storing the beams in RHIC rings, eight bunch spin patterns were used alternating every RHIC store, typically lasting eight hours. Beam polarizations were measured by RHIC polarimeters [24] three-to-four times during the store. For the two RHIC collider rings, labeled "Blue" (B) and "Yellow" (Y), the luminosity-weighted average polarizations in 2012 (2013) were P B = 0.55 ± 0.02 (0.55 ± 0.02) and P Y = 0.57 ± 0.02 (0.56 ± 0.02).…”

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confidence: 99%

Inclusive cross section and double-helicity asymmetry forπ0production at midrapidity inp+pcollisions ats
Adare¹,
Aidala²,
Ajitanand³
et al. 2016
Phys. Rev. D
54
0
31
0
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PHENIX measurements are presented for the cross section and double-helicity asymmetry (ALL) in inclusive π 0 production at midrapidity from p+p collisions at √ s = 510 GeV from data taken in 2012 and 2013 at the Relativistic Heavy Ion Collider. The next-to-leading-order perturbativequantum-chromodynamics theory calculation is in excellent agreement with the presented cross section results. The calculation utilized parton-to-pion fragmentation functions from the recent DSS14 global analysis, which prefer a smaller gluon-to-pion fragmentation function. The π 0 ALL results follow an increasingly positive asymmetry trend with pT and √ s with respect to the predictions and are in excellent agreement with the latest global analysis results. This analysis incorporated earlier results on π 0 and jet ALL, and suggested a positive contribution of gluon polarization to the spin of the proton ∆G for the gluon momentum fraction range x > 0.05. The data presented here extend to a currently unexplored region, down to x ∼ 0.01, and thus provide additional constraints on the value of ∆G.

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Polarimetry Measurements of the Moon

Cited by 2 publications

References 13 publications

Disk-resolved and disk-integrated polarization state of moonlight as a function of lunar phase

Disk-resolved and disk-integrated polarization state of moonlight as a function of lunar phase

Inclusive cross section and double-helicity asymmetry forπ0production at midrapidity inp+pcollisions ats
Adare¹,
Aidala²,
Ajitanand³
et al. 2016
Phys. Rev. D
54
0
31
0
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Polarimetry Measurements of the Moon

Cited by 2 publications

References 13 publications

Disk-resolved and disk-integrated polarization state of moonlight as a function of lunar phase

Disk-resolved and disk-integrated polarization state of moonlight as a function of lunar phase

Inclusive cross section and double-helicity asymmetry forπ0production at midrapidity inp+pcollisions atsAdare1, Aidala2, Ajitanand3 et al. 2016Phys. Rev. D540310View full textAdd to dashboardCite

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Inclusive cross section and double-helicity asymmetry forπ0production at midrapidity inp+pcollisions ats
Adare¹,
Aidala²,
Ajitanand³
et al. 2016
Phys. Rev. D
54
0
31
0
View full text Add to dashboard Cite