Observational features of equatorial coronal hole jets
نویسندگان
چکیده
منابع مشابه
Topologically driven coronal dynamics – a mechanism for coronal hole jets
Bald patches are magnetic topologies in which the magnetic field is concave up over part of a photospheric polarity inversion line. A bald patch topology is believed to be the essential ingredient for filament channels and is often found in extrapolations of the observed photospheric field. Using an analytic source-surface model to calculate the magnetic topology of a small bipolar region embed...
متن کاملNetwork oscillations at the boundary of an equatorial coronal hole
Aims. We investigate intensity oscillations observed simultaneously in the quiet chromosphere and in the corona, above an enhanced network area at the boundary of an equatorial coronal hole. Methods. A Fourier analysis is applied to a sequence of images observed in the 171 Å and 1600 Å passbands of TRACE. Four interesting features above the magnetic network are further investigated by using a w...
متن کاملEquatorial jets in the dusty Martian atmosphere
Abstract. We investigate the production of equatorial jets which demonstrate strong local super-rotation in an atmospheric general circulation model of Mars. These westerly jets are driven by diurnal thermal tides and their strength is shown to be closely related to the amount of dust in the atmosphere. The super-rotating jets are strongest near to equinox and under conditions of high atmospher...
متن کاملDipolar Evolution in a Coronal Hole Region
Using observations from the SOHO, STEREO and Hinode, we investigate magnetic field evolution in an equatorial coronal hole region. Two dipoles emerge one by one. The negative element of the first dipole disappears due to the interaction with the positive element of the second dipole. During this process, a jet and a plasma eruption are observed. The opposite polarities of the second dipole sepa...
متن کاملScaling of Off-Equatorial Jets in Giant Planet Atmospheres
In the off-equatorial region of Jupiter’s and Saturn’s atmospheres, baroclinic eddies transport angular momentum out of retrograde and into prograde jets. In a statistically steady state, this angular momentum transfer by eddies must be balanced by dissipation, likely produced bymagnetohydrodynamic (MHD) drag in the planetary interior. This paper examines systematically how an idealized represe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annales Geophysicae
سال: 2010
ISSN: 1432-0576
DOI: 10.5194/angeo-28-687-2010