rhessi hard x ray observations of an euv jet on august 21 2003 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
RHESSI Hard X-Ray Observations of an EUV Jet on August 21, 2003 PowerPoint Presentation
Download Presentation
RHESSI Hard X-Ray Observations of an EUV Jet on August 21, 2003

Loading in 2 Seconds...

play fullscreen
1 / 16

RHESSI Hard X-Ray Observations of an EUV Jet on August 21, 2003 - PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on

RHESSI Hard X-Ray Observations of an EUV Jet on August 21, 2003. Lindsay Glesener, S äm Krucker RHESSI Workshop 9, Genova September 4, 2009. Outline. Reminder: Emerging flux model Observations of the August 21, 2003 jet TRACE 171, 1550 RHESSI thermal and nonthermal

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'RHESSI Hard X-Ray Observations of an EUV Jet on August 21, 2003' - zareh


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
rhessi hard x ray observations of an euv jet on august 21 2003

RHESSI Hard X-Ray Observations of an EUV Jet on August 21, 2003

Lindsay Glesener, Säm Krucker

RHESSI Workshop 9, Genova

September 4, 2009

outline
Outline
  • Reminder: Emerging flux model
  • Observations of the August 21, 2003 jet
    • TRACE 171, 1550
    • RHESSI thermal and nonthermal
  • Analysis of reconnection geometry
emerging flux model
Emerging Flux Model

(Shibata et. al, 1996)

emerging flux model1
Emerging Flux Model

(Shibata et. al, 1996)

partially occulted

august 21 2003 flare
August 21, 2003 flare
  • Movie!
  • http://sprg.ssl.berkeley.edu/~glesener/movie.html
coronal source

Red: 6-8 keV

Blue: 10-25 keV

Hot jet

Cool

jet

Coronal source

Contour levels 30, 50, 70, 90%

  • Visible early (only)
  • Thermal (<8 keV) and nonthermal (>10 keV) emission
  • Overall RHESSI temp ~13 K
  • Reconnection outflow?
coronal source1

Red: 6-8 keV

Blue: 10-25 keV

Hot jet

Cool

jet

Coronal source

Contour levels 30, 50, 70, 90%

  • Visible early (only)
  • Thermal (>8 keV) and nonthermal (>10 keV) emission
  • Overall RHESSI temp ~13 K
  • Reconnection outflow?
base of the jet

Red: 6-8 keV

Blue: 25-50 keV

Hot jet

Cool

jet

Base of the Jet

Contour levels 30, 50, 70, 90%

  • Nonthermal emission (>25 keV)
  • No thermal emission
  • Overall RHESSI temp ~22 MK
near limb source

Red: 6-8 keV

Blue: 25-50 keV

Hot jet

Cool

jet

Near-Limb Source

Contour levels 30, 50, 70, 90%

  • Present throughout flare and jet.
  • Thermal (<10 keV) and nonthermal (>12 keV)
  • Temp ~24 MK
  • Thermal electron density
  • Instantaneous nonthermal electron density at peak time:
    • Integrate over energy, use ni=thermal density
    • Result: nnontherm ~ 2x108 cm-3
near limb source1

Red: 6-8 keV

Blue: 25-50 keV

Hot jet

Cool

jet

Near-Limb Source

Contour levels 30, 50, 70, 90%

  • Late in the flare, a small, hot loop becomes visible:
near limb source2

Red: 6-8 keV

Blue: 25-50 keV

Hot jet

Cool

jet

Near-Limb Source

Contour levels 30, 50, 70, 90%

  • Late in the flare, a small, hot loop becomes visible:
conclusion
Conclusion…
  • RHESSI observed HXR from an EUV jet. The HXR locations and timing could indicate emission from reconnection outflow jets, lending support to the emerging flux model.

Lingering Questions…

  • Other explanations for the coronal emission? Outflow jets? Looptop source? Something else??
  • Why do we see nonthermal emission from the jet base with no thermal emission?
rhessi images

Red: 6-8 keV

Blue: 25-50 keV

Red: 6-8 keV

Blue: 25-50 keV

RHESSI images

Contour levels 30, 50, 70, 90%

Red: 6-8 keV

Blue: 10-25 keV

Early phase

First peak

Second peak

august 21 2003 flare spectra
August 21, 2003 flare: Spectra

Late phase

Early phase