Universität zu Köln

Linscott, I. R., Bird, M. K., Hinson, D. P., Tyler, G. L., Stern, S. A., Vincent, M. A., DeBoy, C. C., Young, L. A., Beyer, R. A., Ennico, K., Moore, J. M., Gladstone, G. R., Olkin, C. B., Paetzold, M., Schenk, P. M., Strobel, D. F., Summers, M. E., Weaver, H. A. and Grundy, W. M. (2021). High-resolution radiometry of Pluto at 4.2 cm with New Horizons. Icarus, 363. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1090-2643

Full text not available from this repository.

Abstract

The radio thermal emission from Pluto was observed from the New Horizons spacecraft at a wavelength of 4.2 cm along two scans across the planetary disk shortly after closest approach to Pluto on 14 July 2015. The measurements were performed as part of the New Horizons Radio Science Experiment (REX) using the 2.1 m High Gain Antenna (HGA) and the spacecraft's X-Band receiver. The HGA boresight first scanned along a diametric chord across the Pluto disk and then reversed direction to traverse a chord that crossed close to Pluto's winter pole. The diametric scan reveals a hot spot on the Pluto nightside associated with an optically bright region centered roughly at the planetocentric coordinates 280 degrees E, 55 degrees S, imaged in 2002-03 with the Hubble Space Telescope. The nightside was also found to be warmer than the dayside during the polar scan. The highest emission was not observed at the maximum southern latitude, however, but rather near the outbound Pluto limb at lower latitude. The REX emission profile from the polar scan is qualitatively consistent with a bright U-shaped polar cap observed on Pluto's Charon-facing hemisphere during the recurring Pluto/Charon mutual events in the late 1980's. The REX radiometer measurements show distinct variations in microwave brightness that constrain volatile transport models and provide unique information on the thermal structure and composition on the regions in winter night during the New Horizons encounter at Pluto.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Linscott, I. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bird, M. K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hinson, D. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Tyler, G. L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stern, S. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vincent, M. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED DeBoy, C. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Young, L. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Beyer, R. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ennico, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Moore, J. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gladstone, G. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Olkin, C. B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Paetzold, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schenk, P. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Strobel, D. F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Summers, M. E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Weaver, H. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Grundy, W. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-599797
DOI:	10.1016/j.icarus.2021.114430
Journal or Publication Title:	Icarus
Volume:	363
Date:	2021
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1090-2643
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language THERMAL EMISSION; OCCULTATION MEASUREMENTS; TITANS SURFACE; CHARON; POLARIZATION; TEMPERATURE; TOPOGRAPHY; ATMOSPHERE; ENCELADUS; IAPETUS Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59979