Good News, everyone!
Correspondent:: "Revi Shankar"
Date: Fri, 24 Dec 2004 22:16:41 -0500
--------
////////////////////////////////////////////////////////////////////////
TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 2890
SUBJECT: GRB041220: Swift-BAT burst
DATE: 04/12/21 02:48:49 GMT
FROM: Scott Barthelmy at NASA/GSFC
H. Krimm (GSFC/USRA), L. Angelini (GSFC/JHU), L. Barbier (GSFC),
S. Barthelmy (GSFC), J. Cummings (GSFC), E. Fenimore (LANL), N. Gehrels
(GSFC),
M. Goad (U.Leicester), D. Hullinger (GSFC/UMD), C. Markwardt (GSFC/UMD),
K. McLean (LANL/UTD), D. Palmer (LANL), A. Parsons (GSFC),
P. Roming (PSU), G. Sato (ISAS), M. Suzuki (Saitama), T. Takashima (ISAS),
J. Tueller (GSFC) on behalf of the Swift BAT team:
At 22:58:26 UT, the Swift-BAT triggered and located on-board GRB041220
(BAT Trigger #100433). The spacecraft did not autonomously slew
to the burst since automated slewing is not yet enabled. Automated
notification to the BAT Team through TDRSS was partially enabled
for this burst.
The ground-calculated location is RA, DEC 291.286, +60.624 (J2000)
with an uncertainty of 12 arcmin (radius, dominated by a large systematic
uncertainty due to the lack of an on-orbit boresight alignment calibration).
This is ~16 degrees off the BAT boresight. It was imaged at >22 sigma.
The source is 19 degrees off the galactic plane.
The burst is a fast-rise exponential-decay (FRED) with a full-width
at half-max of ~2 sec. There is some indication of emission out
to 18 sec after the peak. The peak flux was 2.2 events/cm^2/sec
in the 15-350 keV band (~8 Crab). The total fluence is
approximately 5.9 events/cm^2 (15-350 keV), or 1E-6 erg/cm^2.
Correspondent:: "iDRMRSR"
Date: Fri, 24 Dec 2004 22:40:13 -0500
--------
That was Swift-BAT and not Swift Boat, right?
In any case, Kerry lost. Sorry about that.
[*]
-----
Correspondent:: pastorekenneth@aol.com (PastoreKenneth)
Date: 25 Dec 2004 06:31:21 GMT
--------
Too bad the SOHO CCD is baking out.
Correspondent:: Unclaimed Mysteries
Date: Sat, 25 Dec 2004 06:32:41 GMT
--------
Revi Shankar wrote:
> ////////////////////////////////////////////////////////////////////////
> TITLE: GCN GRB OBSERVATION REPORT
> NUMBER: 2890
> SUBJECT: GRB041220: Swift-BAT burst
> DATE: 04/12/21 02:48:49 GMT
> FROM: Scott Barthelmy at NASA/GSFC
>
> H. Krimm (GSFC/USRA), L. Angelini (GSFC/JHU), L. Barbier (GSFC),
> S. Barthelmy (GSFC), J. Cummings (GSFC), E. Fenimore (LANL), N. Gehrels
> (GSFC),
> M. Goad (U.Leicester), D. Hullinger (GSFC/UMD), C. Markwardt (GSFC/UMD),
> K. McLean (LANL/UTD), D. Palmer (LANL), A. Parsons (GSFC),
> P. Roming (PSU), G. Sato (ISAS), M. Suzuki (Saitama), T. Takashima (ISAS),
> J. Tueller (GSFC) on behalf of the Swift BAT team:
>
> At 22:58:26 UT, the Swift-BAT triggered and located on-board GRB041220
> (BAT Trigger #100433). The spacecraft did not autonomously slew
> to the burst since automated slewing is not yet enabled. Automated
> notification to the BAT Team through TDRSS was partially enabled
> for this burst.
>
> The ground-calculated location is RA, DEC 291.286, +60.624 (J2000)
> with an uncertainty of 12 arcmin (radius, dominated by a large systematic
> uncertainty due to the lack of an on-orbit boresight alignment calibration).
> This is ~16 degrees off the BAT boresight. It was imaged at >22 sigma.
> The source is 19 degrees off the galactic plane.
>
> The burst is a fast-rise exponential-decay (FRED) with a full-width
> at half-max of ~2 sec. There is some indication of emission out
> to 18 sec after the peak. The peak flux was 2.2 events/cm^2/sec
> in the 15-350 keV band (~8 Crab). The total fluence is
> approximately 5.9 events/cm^2 (15-350 keV), or 1E-6 erg/cm^2.
>
Backfire from an X-ist hot rod. I'm sure it will be given some "natural"
explanation though.
--
It Came From C. L. Smith's Unclaimed Mysteries.
http://www.unclaimedmysteries.net
"Krusty" responded in alt.fan.rush-limbaugh: "Are you saying that racism
is wrong? Or evil? There are absolutely differences in human races on
our planet. Try to work through your insipid, girly, frightened, loser
view of the world and progress beyond the bullshit you were fed by Ms
Kornblum in middle school."
Correspondent:: Eddie Vroom
Date: Sat, 25 Dec 2004 07:44:58 GMT
--------
Revi Shankar wrote:
> ////////////////////////////////////////////////////////////////////////
> TITLE: GCN GRB OBSERVATION REPORT
> NUMBER: 2890
> SUBJECT: GRB041220: Swift-BAT burst
> DATE: 04/12/21 02:48:49 GMT
> FROM: Scott Barthelmy at NASA/GSFC
>
> H. Krimm (GSFC/USRA), L. Angelini (GSFC/JHU), L. Barbier (GSFC),
> S. Barthelmy (GSFC), J. Cummings (GSFC), E. Fenimore (LANL), N. Gehrels
> (GSFC),
> M. Goad (U.Leicester), D. Hullinger (GSFC/UMD), C. Markwardt (GSFC/UMD),
> K. McLean (LANL/UTD), D. Palmer (LANL), A. Parsons (GSFC),
> P. Roming (PSU), G. Sato (ISAS), M. Suzuki (Saitama), T. Takashima (ISAS),
> J. Tueller (GSFC) on behalf of the Swift BAT team:
>
> At 22:58:26 UT, the Swift-BAT triggered and located on-board GRB041220
> (BAT Trigger #100433). The spacecraft did not autonomously slew
> to the burst since automated slewing is not yet enabled. Automated
> notification to the BAT Team through TDRSS was partially enabled
> for this burst.
>
> The ground-calculated location is RA, DEC 291.286, +60.624 (J2000)
> with an uncertainty of 12 arcmin (radius, dominated by a large systematic
> uncertainty due to the lack of an on-orbit boresight alignment calibration).
> This is ~16 degrees off the BAT boresight. It was imaged at >22 sigma.
> The source is 19 degrees off the galactic plane.
>
> The burst is a fast-rise exponential-decay (FRED) with a full-width
> at half-max of ~2 sec. There is some indication of emission out
> to 18 sec after the peak. The peak flux was 2.2 events/cm^2/sec
> in the 15-350 keV band (~8 Crab). The total fluence is
> approximately 5.9 events/cm^2 (15-350 keV), or 1E-6 erg/cm^2.
Could you explain the significance of this for the Astronimically
Challenged amongst us? Something along the level of an episode of Nova?
Old-school PBS style would be nice. With cheesy filmstrip-style graphics
on A.B.S. if it's not too much trouble. :)
Are we talking SETI data, or a supernova sighting? Or what?
--
Art and Fashion for the New Conspiracy
http://www.cafepress.com/luciddragon
the Mystical RevvedErrand Doktor Eddie Vroom
Certified God by the holy authority of
the White Lotus Fortune Cookie Company
June 23, 2004
Correspondent:: Nick Andrew
Date: 5 Jan 2005 22:52:15 +1100
--------
Eddie Vroom writes:
>Revi Shankar wrote:
>> ////////////////////////////////////////////////////////////////////////
>> TITLE: GCN GRB OBSERVATION REPORT
>> NUMBER: 2890
>> SUBJECT: GRB041220: Swift-BAT burst
>> DATE: 04/12/21 02:48:49 GMT
>> FROM: Scott Barthelmy at NASA/GSFC
>Could you explain the significance of this for the Astronimically
>Challenged amongst us? Something along the level of an episode of Nova?
>Are we talking SETI data, or a supernova sighting? Or what?
Gamma Ray Burst. It is postulated that this event signals the birth
of a Black Hole. The energy released is so great that we can detect
events occurring anywhere in the _known universe_.
We see about two of these events every day, but scientists estimate
that there are probably around 1000 a day in the entire universe.
We only see 2 because intermediate matter obscures the signals.
Naturally the gamma rays are moving at the speed of light, so we're
seeing events over ranges of billions of years in the past.
The SWIFT spacecraft is designed to detect these gamma ray bursts
and then swiftly (that's a scientific joke, get it?) repoint itself
toward the source of the event, to capture more data at different
frequencies. Ground-based telescopes can't react quickly enough to
get this data because the events last only a few seconds to a few
minutes.
Nick.
--
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