WEEK SIX


July 6, 2009



Started to analyze each spectrum from each detector. Since I'm starting this process I have questions on this new method.
            
-Do I continue to fit the thermal, two Gaussian and the broken power and then take an average temperature over the nine detectors?

-Is there a different component  or new components  I can use ?

Hopefully I will be able to talk to Kim Tolbert and Brian Dennis at Goddard .

Until then this is my results for Detectors 3 and 4 with various combinations of components:



Detector 3

Impulsive Phase
Time Interval: 1:54:40-1:55






Pre-Peak
Time Interval: 2:00:00- 2:00:20











Peak




Decay Phase
Time Interval: 2:04-2:04:20













Detector 4


Time Interval: 1:54:40-1:55







Time Interval 2:00-2:00:20












I made another spectrum with a sum of all detectors.






July 8, 2009

Today has been very successful! I was able to talk to several people from Goddard to give Angela and I the latest method to analyze the spectroscopy from RHESSI. I learned that I should start analyzing detectors three and four since they have a higher resolution compared to the other seven.

-Start to fit the energy range at 6 keV in attenuators A1 and A3.
(Thats perfect since all  time intervals I selected are in A1 and A3 states)

-Continuing to use the thermal component (for more information click here )but use the setting full instead of continuum.
    * Do not have to use a Gaussian for the iron and iron/nickel line but do need it to model the k escape of the satellite.
              Use Gaussian line around 8-8.5 and 10.5-11 keV

-If using a second thermal component use continuum. CORRECTION: use full for both thermal components. Issue with this is the third parameter may differ but keep them fixed.
    ****Question: Will I still need to add the Gaussian line for the iron and iron/nickel line if the first thermal component is set to full and takes in account those ions??
          Answer: No.


-Need to use a special component when analyzing the spectrum from each individual detector called Drm_mod

**If count rate is high use pileup_mode component. Pile up peak is in A0 right before attenuator change into A1 and does not pile up in A3.

-Instead of using the broken power law I will be using Thick2 Thick target Bremsstrahlung x-ray spectrum from an isotropic electron distribution.





These are my new results:


Detector 3












             





Next I want to add an additional component to time interval beyond 01:57:40.












July 9, 2009


I finally fixed the issue with the TRACE MDI align and continued to analyze the spectrum of my flare.

Using a nonthermal component and thermal components to track the time interval when the nonthermal line does not fit.



  


Interval: 2-17
Time: 1:55:40- 2:01:00


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July 10, 2009




Interval: 18-30
Times:2:00:00 -2:06:00

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