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NYC Subway Savants

By Steven Christe | July 2, 2008

Niemann family

Topics: Personal, News | No Comments »

Castle Crag

By Steven Christe | June 23, 2008

Castle Crag

Topics: Personal | No Comments »

11-Jun-08 FOXSI Conference Call Summary

By Steven Christe | June 23, 2008

Here is a summary of items which were discussed in this meeting.

1] Terada-san (Yukikatsu) was designated as the main FOXSI-Japan contact (terada at phy.saitama-u.ac.jp).

2] Tajima-san, Hiro (htajima at slac.stanford.edu) & Watanabe-san, Shin (watanabe at astro.isas.jaxa.jp) were designated as the main DSSD ASIC contacts.

3] The project schedule needs to be updated to include a more detailed description of the detector development including but not limited to trips to Berkeley (July or August?) and Japan (???), and final ASIC delivery (Jan 2008?).

4] Descriptions of all available detectors (Si & CdTl) including but not limited to pitch sizes, thickness, energy resolution, number of pixels, power requirements, and test results were requested by the Berkeley team.

5] Preliminary ASIC output specifications were also requested by the Berkeley team so that initial FPGA programming can begin as soon as possible.

6] A Mission Initiation Conference (MIC) has been organized with the NASA Sounding Rocket Team in Wallops, Virginia, on August 15th. The Berkeley team and MSFC team will be attending.

7] FOXSI conference calls will occur approximately once a month (more if needed). Details for the next conference call will be sent out soon.

Topics: Work, FOXSI | No Comments »

New method to access microflare database

By Steven Christe | May 9, 2008

Sam Freeland was kind enough to write a great user-friendly IDL function to access my RHESSI microflare list. It is now part of the SSW library and therefore just a few key presses away for all of us. The function is called ssw_getrhessi_schriste_uflares.pro. No longer is it necessary to “install” the list locally as this function will automatically download whatever it needs through a network connection. The documentation follows.


function ssw_getrhessi_schriste_uflares, t0, t1, refresh=refresh
;
;+
; Name: ssw_getrhessi_schriste_uflares
;
; Purpose: ssw client access to RHESSI microflare dbase by Steven Christe
;
; Description and Credit:
; This microflare list was created by Steven Christe through a
; search of the 6-12 keV count rate. This list is NOT related to
; the official RHESSI flare list (as available in the RHESSI GUI). Please
; see http://sprg.ssl.berkeley.edu/~schriste/?page_id=37 for more
; information.'
;
; Input Parameters:
; t0, t1 - optional time or time range - default=full list
;
; Output:
; function returns structure vector, 1 per event
;
; Calling Examples:
; IDL> uf=ssw_getrhessi_schriste_uflares() ; full list
; IDL> uf=ssw_getrhessi_schriste_uflares(time0, time1) ; all in range
;
; History:
; 16-apr-2008 - S.L.Freeland
; 17-apr-2008 - S.L.Freeland - documentaion/name mods per Steven

Thank you Sam!

Topics: Work, Microflares | No Comments »

Huzzah! Paper Accepted.

By Steven Christe | May 9, 2008

Recently received this email for ApJ:
“Dear Dr. Christe,

I am pleased to tell you that your paper, ApJL # 22648:

Title: Hard X-Rays Associated with Type III Radio Bursts
Authors: S. Christe, S. Krucker, and R. P. Lin

has been accepted for publication in THE ASTROPHYSICAL JOURNAL LETTERS and is being sent to the University of Chicago Press where it will be immediately copyedited and set in page form ready to be published.

Good news indeed.

Topics: Work, Publication | No Comments »

New Nugget: Solar Cycle 24 at hand!

By Steven Christe | May 6, 2008

nugget icon by Hugh Hudson

The new solar cycle is coming fast and so are the solar conferences! Link

Topics: Work, RHESSI Science Nuggets | No Comments »

New Nugget: Anisotropy of RHESSI hard X-ray emission

By Steven Christe | April 21, 2008

nugget icon by Jana Kasparova

Should we consider new models for solar flares? A study of emission anisotropy may provide the answer.
Link

Topics: Work, RHESSI Science Nuggets | No Comments »

New Nugget : A STEREO/RHESSI Flare at Solar Minimum

By Steven Christe | April 11, 2008

nugget icon by Hugh Hudson and Säm Krucker

A joint RHESSI/STEREO observation of the March 25th 2008 flare sends waves through the atmosphere. Link

Topics: Work, RHESSI Science Nuggets | No Comments »

FOXSI Kick off Meeting Wrap-up

By Steven Christe | March 31, 2008

The FOXSI Kick off meeting was a great success. Here are the presentation files (password restricted).

The password will be sent out through email.

Topics: FOXSI | No Comments »

War, what is it good for?

By Steven Christe | March 3, 2008

- Votre mort ne changera rien. La defaite est consommee. Mais il convient qu’une defaite se manifest par des morts. Ce doit etre un deuil. Vous etes de service pour jouer le role.
- Bien, mon Commandant.

- Your death will not change anything. Our defeat is already decided. But, defeat is made manifest by the dead. It must be a wake. You are called to play this role.
- Yes, sir.

from “Pilote de Guerre” by St-Exupery

Topics: Uncategorized | No Comments »


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