Post on 06-Jan-2018
description
INFRARED AURORAE IN THE SOLAR SYSTEM
Infrared Aurorae in the Solar System
Tom Stallard
ATMOSPHERIC PHYSICS LABORATORYDEPARTMENT OF PHYSICS AND ASTROMONY
Steve Miller, Henrik Melin, Makenzie Lystrup
and the Cassini community, especially: Emma Bunce, Chris
Arridge, Nick Achilleos and Michele Dougherty
INFRARED AURORAE IN THE SOLAR SYSTEM
H3+ formation
H2 + h = H2+ + e
H2 + e* = H2+ + e + e
H2+ + H2 = H3
+ + H
H3+ destruction
H3+ + X = HX+ + H2
H3+ + e- = H + H2
Hydrocarbons Hydrocarbons
INFRARED AURORAE IN THE SOLAR SYSTEM
Infrared
(Connerney et al)
Ultraviolet
(Clarke et al)
Imaging: Jupiter
INFRARED AURORAE IN THE SOLAR SYSTEM
Saturn
INFRARED AURORAE IN THE SOLAR SYSTEM
Uranus
INFRARED AURORAE IN THE SOLAR SYSTEM
Spectroscopy: Jupiter
INFRARED AURORAE IN THE SOLAR SYSTEM
Multiple line spectroscopy provides:
• emission intensities• temperature• composition• cooling rates• vertical thermal profile• atmospheric densities
INFRARED AURORAE IN THE SOLAR SYSTEM
IR observations of Jupiter
INFRARED AURORAE IN THE SOLAR SYSTEM
Temperature
INFRARED AURORAE IN THE SOLAR SYSTEM
Cooling
INFRARED AURORAE IN THE SOLAR SYSTEM
Ion Winds
INFRARED AURORAE IN THE SOLAR SYSTEM
INFRARED AURORAE IN THE SOLAR SYSTEM
INFRARED AURORAE IN THE SOLAR SYSTEM
High resolution observations of
Saturn
INFRARED AURORAE IN THE SOLAR SYSTEM
INFRARED AURORAE IN THE SOLAR SYSTEM
Compared with the UV emission
INFRARED AURORAE IN THE SOLAR SYSTEM
1.3” smear
INFRARED AURORAE IN THE SOLAR SYSTEM
Infilled
Extended Flanks
INFRARED AURORAE IN THE SOLAR SYSTEM
INFRARED AURORAE IN THE SOLAR SYSTEM
Saturn
Jupiter
INFRARED AURORAE IN THE SOLAR SYSTEM
Saturn
Jupiter
Co-rotation breakdown
INFRARED AURORAE IN THE SOLAR SYSTEM
Saturn
Jupiter
Co-rotation breakdown Outer effects