Titan brighter at twilight than in daylight

@article{Muoz2017TitanBA,
  title={Titan brighter at twilight than in daylight},
  author={A. Mu{\~n}oz and P. Lavvas and R. West},
  journal={arXiv: Earth and Planetary Astrophysics},
  year={2017}
}
Investigating the overall brightness of planets (and moons) provides insight into their envelopes and energy budgets [1, 2, 3, 4]. Titan phase curves (a representation of overall brightness vs. Sun-object-observer phase angle) have been published over a limited range of phase angles and spectral passbands [5, 6]. Such information has been key to the study of the stratification, microphysics and aggregate nature of Titan's atmospheric haze [7, 8], and has complemented the spatially-resolved… Expand

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References

SHOWING 1-10 OF 54 REFERENCES
Titan's Rotational Light-Curve
Abstract Recent observations demonstrate that near-infrared spectroscopy can probe Titan's surface through its haze. In a 5-week period during September and October 1993 we observed Titan's methaneExpand
Photometry and polarimetry of Titan: Pioneer 11 observations and their implications for aerosol properties
The preliminary measurements by Pioneer 11 of the limb darkening and polarization of Titan at red and blue wavelenghts (M. G. Tomasko, 1980, J. Geophys. Res., 85, 5937–5942) are refined and theExpand
Titan haze distribution and optical properties retrieved from recent observations
Abstract The VIMS instrument onboard Cassini observed the north polar region of Titan at 113° phase angle, 28 December 2006. On this spectral image, a vast polar cloud can be seen northward to 62°N,Expand
The Ultraviolet Albedo of Titan
Abstract Ultraviolet spectra of Titan obtained with the Faint Object Spectrograph of the Hubble Space Telescope in October 1991 and August 1992 have yielded a disk-average geometric albedo ofExpand
Venus phase function and forward scattering from H2SO4
Abstract Ground-based and spacecraft photometry covering phase angles from 2° to 179° has been acquired in wavelength bands from blue to near infrared. An unexpected brightness surge is seen in the BExpand
The occultation of 28 Sgr by Titan
We present a comprehensive analysis of data obtained during the 1989 July 3 occultation of 28 Sgr by Titan. The data set includes 23 lightcurves from 15 separate stations, spanning wavelengths fromExpand
Voyager 2 photopolarimeter observations of Titan
Observations of Titan's whole disk polarization at 2460 and 7500 A are presented and analyzed in terms of model scattering atmospheres. If the Titan aerosols are spherical or nearly spherical, noExpand
Glory revealed in disk-integrated photometry of Venus
Context. Reflected light from a spatially unresolved planet yields un ique insight into the overall optical properties of the plan et cover. Glories are optical phenomena caused by light that isExpand
Glancing views of the Earth. From a lunar eclipse to an exoplanetary transit
It has been posited that lunar eclipse observations may help predict the in-transit signature of Earth-like extrasolar planets. However, a comparative analysis of the two phenomena addressing inExpand
Size estimates of Titan's aerosols based on Voyager high-phase-angle images
Limits on the physical properties of the scattering haze near the top of Titan's atmosphere are derived from data obtained from seven high-phase-angle images from Voyager 1 and 2. From the ratio ofExpand
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4
5
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