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    Today 10-03-16 QTY 4 GRBs Detected Swift Satellite Mission

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    beejean

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    Today 10-03-16 QTY 4 GRBs Detected Swift Satellite Mission

    Post  beejean on Wed 17 Mar 2010, 1:38 am

    On top of the CME activity, there were 4 GRB detections reported on SWIFT.


    GRB NumberUniv TimeUVOT Magnitude
    100316D 12:44:50 TBD
    100316C 08:57:59 TBD
    100316B 08:01:36 V-18.28
    100316A 02:23:00 V=20.48
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    Rose8

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    Re: Today 10-03-16 QTY 4 GRBs Detected Swift Satellite Mission

    Post  Rose8 on Wed 17 Mar 2010, 7:37 pm

    Can you translate for us people not familiar with that chart, please?
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    sherryjeffries

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    GRB 3/17/10 today

    Post  sherryjeffries on Thu 18 Mar 2010, 1:18 am

    TITLE: GCN/SWIFT NOTICE
    NOTICE_DATE: Wed 17 Mar 10 04:45:13 UT
    NOTICE_TYPE: Swift-BAT GRB Position
    TRIGGER_NUM: 416226, Seg_Num: 0
    GRB_RA: 175.059d {+11h 40m 14s} (J2000),
    175.184d {+11h 40m 44s} (current),
    174.445d {+11h 37m 47s} (1950)
    GRB_DEC: -46.314d {-46d 18' 50"} (J2000),
    -46.371d {-46d 22' 14"} (current),
    -46.037d {-46d 02' 12"} (1950)
    GRB_ERROR: 3.00 [arcmin radius, statistical only]
    GRB_INTEN: 0 [cnts] Image_Peak=1512 [image_cnts]
    TRIGGER_DUR: 64.000 [sec]
    TRIGGER_INDEX: 20000 E_range: 15-50 keV
    BKG_INTEN: 0 [cnts]
    BKG_TIME: 0.00 SOD {00:00:00.00} UT
    BKG_DUR: 0 [sec]
    GRB_DATE: 15272 TJD; 76 DOY; 10/03/17
    GRB_TIME: 17034.37 SOD {04:43:54.37} UT
    GRB_PHI: -177.75 [deg]
    GRB_THETA: 8.11 [deg]
    SOLN_STATUS: 0x13
    RATE_SIGNIF: 0.00 [sigma]
    IMAGE_SIGNIF: 7.00 [sigma]
    MERIT_PARAMS: +1 +0 +0 +6 +1 -3 +0 +0 +67 +0
    SUN_POSTN: 356.77d {+23h 47m 06s} -1.40d {-01d 23' 50"}
    SUN_DIST: 132.21 [deg] Sun_angle= -11.9
    (East of Sun)
    MOON_POSTN: 8.53d {+00h 34m 08s} +9.11d {+09d 06' 45"}
    MOON_DIST: 141.03 [deg]
    MOON_ILLUM: 2 [%]
    GAL_COORDS: 290.32, 14.81 [deg] galactic lon,lat of the burst (or transient)
    ECL_COORDS: 198.71,-43.40 [deg] ecliptic lon,lat of the burst (or transient)
    COMMENTS: SWIFT-BAT GRB Coordinates.
    COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)
    COMMENTS: A point_source was found.
    COMMENTS: This does not match any source in the on-board catalog.
    COMMENTS: This does not match any source in the ground catalog.
    COMMENTS: This is a GRB.
    COMMENTS: This trigger occurred at longitude,latitude = 224.43,-5.37 [deg]. [url= http://www.mpe.mpg.de/~jcg/grb100317A.html] http://www.mpe.mpg.de/~jcg/grb100317A.html[/url]
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    beejean

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    Re: Today 10-03-16 QTY 4 GRBs Detected Swift Satellite Mission

    Post  beejean on Thu 18 Mar 2010, 1:22 am

    Hi Rose,

    The GRB acronym stands for Gamma Ray Burst. They are highly energetic particles that penetrate into earth's atmosphere and core. Some people guess that they might cause effects here on earth, like earthquakes but the actual cause-effect relationship is not precisely known.

    Wikipedia says:
    "Bursts can last from milliseconds to nearly an hour, although a typical burst lasts a few seconds. The initial burst is usually followed by a longer-lived "afterglow" emitting at longer wavelengths (X-ray, ultraviolet, optical, infrared and radio).

    Most observed GRBs are believed to be a narrow beam of intense radiation released during a supernova event, as a rapidly rotating, high-mass star collapses to form a black hole. A subclass of GRBs (the "short" bursts) appear to originate from a different process, possibly the merger of binary neutron stars."

    On tuesday, there were 4 GRBs in one day detected by the NASA SWIFT monitors, which is a large number for one day's reporting. The first column is the gamma ray burst number which is composed of the yr-mth-day with a letter (A,B...) to indicate that more than one burst was recorded. The second column contains the Universal Time when the burst was Detected by the NASA monitors (so you'd add 8 hours if you are in CA). The UVOT magnitude is some measure of radiation, but when I looked at the chart to pick up the data, that value had not been calculated for the last two readings.
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    beejean

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    Re: Today 10-03-16 QTY 4 GRBs Detected Swift Satellite Mission

    Post  beejean on Thu 18 Mar 2010, 1:24 am

    sherryjeffries wrote:TITLE: GCN/SWIFT NOTICE
    NOTICE_DATE: Wed 17 Mar 10 04:45:13 UT
    NOTICE_TYPE: Swift-BAT GRB Position

    Dear Sherrie:

    Thank you so much for this! I was having fits missing you and mg.
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    sherryjeffries

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    Hi BeeJee

    Post  sherryjeffries on Thu 18 Mar 2010, 1:38 am

    Yes, I know! It is hard to find time to post on both sites. I try to check in here at least a couple times a week. I like all the sites, but earthboppin is just easier for me because it is the fastest and I don't have much time. I'm thinking of you all!

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