Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The SLED project and the dynamics of coronal flux ropes   Investigations of the dynamics of the hot coronal plasma are crucial for
understanding various space weather phenomena and making in-depth analyzes of
the global heating of the solar corona. We present here numerical simulations
of observations of siphon flows along loops (simple semi-circular flux ropes)
to demonstrate the capabilities of the Solar Line Emission Dopplerometer
(SLED), a new instrument under construction for imaging spectroscopy. It is
based on the Multi-channel Subtractive Double Pass (MSDP) technique, which
combines the advantages of filters and slit spectrographs. SLED will observe
coronal structures in the forbidden lines of FeX 637.4 nm and FeXIV 530.3 nm,
and will measure Doppler shifts up to 150 km/s at high precision (50 m/s) and
cadence (1 Hz). It is optimized for studies of the dynamics of fast evolving
events such as flares or Coronal Mass Ejections (CMEs), as well as for the
detection of high-frequency waves. Observations will be performed with the
coronagraph at Lomnicky Stit Observatory (LSO), and will also occur during
total solar eclipses as SLED is a portable instrument.

24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex