Tetsuya Watanabe NAOJ

1
Fine Structures of Flaring Loops Seen in FeXXIII
263.76Å Line

• Tetsuya Watanabe (NAOJ)

2
Main Points

• First light spectra and images of flare lines
• (FeXXIII263.76A FeXXIV192.0A/255.1A)
• FeXXIII 263.76A line profile clean ? velocity
  structure
• in a few arcsecs fov, there are significant
  changes
• temperature diagnostics via Fe ionization stages
• transient ionization/recombination
  non-equilibrium?
• turbulent sites up to 1,000km/s
• evaporation sites 2-3102 km/s is common!
• (FeXV) plasma down flow sites 100km/s

3
Abundant Iron Emission Lines at Various
Ionization Stages
Iron Ionization Stages observable in EIS bands
HeII
FeXXIII
4
C4.2 flare on 16-jan-07
5
(No Transcript)
6
log T 6.8
log T 7.2
log T 7.1
hot plasma ejecta or propagation of heating
process to taller loops
7
FeXXIII 263.76Å image
60 arcsecs
60 arcsecs
8
(No Transcript)
9
Nobeyama Radio Heliograph
10
(No Transcript)
11
(No Transcript)
12
Exp5sec/slit
13
EIS 23523-24151
HeII
14
FeXXIII spectral profile sliced image (total
intensity normalized)
?v300km/s
?v200km/s
intense evaporation site
turbulence site
line center
total intensity
15
FeXV spectral profile sliced image
line center
total intensity
?v-100km/s
?v-120km/s
down flow region
16
HeII spectral profile sliced image
line center
total intensity
down flow region
17
FeXVII/FeXXIV
FeXXIII
FeXXIII image
18
FeXXIII
FeXVII
FeXXIV
Flare 2007/01/16
active region
quiet sun
Watanabe et al. submitted to PASJ
19
FeXXIII
FWHM153km/s
FWHM962km/s
20
Site of turbulence?
21
FeXXIII evaporation site
FeXXIII image
22
FeXXIII evaporation site
FeXXIII
216km/sec
23
FeXXIII evaporation site
FeXV
FeXVI
?v80km/s
?v38km/s
HeII
?v-30km/s (redshift)
24
6-jun-07 M1.0
FeXXIII
towards maximum
Vup gt 400km/s
impulsive phase
before onset
25
FeXV downflow region
FeXXIII image
26
Down flow region
FeXV
121km/s
27
FeXXIII
FeXVI
moderate blueshift
nearly stationary
FeXIV
HeII
?v-31km/s (redshift)
?v-88km/s (redshift)
28
Developments of non-equilibrium plasma model by
using large helical device and its applications
to Hinode/EIS(poster)
Hinode Science Meeting, Dublin, Ireland, 20-24
August, 2007

• Norimasa Yamamoto1, Takako Kato1, Kuninori Sato1,
  Hisahumi Funaba1,
• Naoki Tamura1, Tetsuya Watanabe2
• 1National Institute for Fusion Science
• 2National Astronomical Observatory of Japan

29
Collisional-radiative Model
Rate equations
Ni Population density. WijTotal transition
rates from i state to j state.
Atomic Processes and Data Excitation and
Ionization by electron impact, Ce Si
Excitation by proton impact, Cp Radiative
transition, Ar Radiative and Three-body
recombination, Rr Rt Atomic data of these were
calculated by Hullac code. Ce on Fe XIII adopted
Aggarwals data (2004), which are the most
recently R-matrix calculations. In this
presentations, comparisons with line intensity
ratios by using Hullac and Aggarwals data.
Wavelength/Energy Wavelengths of
spectral lines adopted NIST database.
30
Collisional-radiative Model
Quasi-steady state solutions
a) Wij gtgt 0 dN/dt 0 ? Excited states b)
Wij 0 dN/dt ? 0 ? Ground and metastable
states
a) Excited States, Ni
Population density coefficients
Population density,
Rate equations on ri(k)
time independent equations
b) Ground States, Nk
Ion fractions
Ionization equilibrium ? ArnaudRaymond1992,
Mazotta1995 Non equilibrium ? Particle Movements
MIST code or STRAHL code
31
Fe XIII line spectra Comparison with Hullac and
Aggarwals data
3s23p2 - 3s23p3d 196.5A 1D2 - 1F3, 200.0A 3P1
- 3D2 201.1A 3P1 - 3D1, 202.0A 3P0 - 3P1
202.4A 3P1 - 3P0, 203.8A 3P2 - 3D3
32
density
FeXIII 202.044 A 203.797 A 203.838 A
chianti
33
high density limit gt 4
34
FeXIII line ratio ? FeXIII intensity
35
(No Transcript)