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TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4423
SUBJECT: GRB 060102: Swift-BAT detection of a burst
DATE:    06/01/02 21:45:10 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <Scott@lheamail.gsfc.nasa.gov>

A. Retter (PSU), S. Barthelmy (GSFC), D. Burrows (PSU), M. Chester (PSU),
N. Gehrels (GSFC), S. Immler (GSFC), F. Marshall (GSFC), T. Sakamoto (GSFC)
on behalf of the Swift team:

At 02:45:43 UT, Swift-BAT triggered and located GRB 060102 (trigger=175603).
The spacecraft did not slew to this burst because of the Moon observing
constraint.  The BAT on-board calculated location is RA,Dec 328.852d,-1.846d
{21h 55m 25s,-01d 50' 44"} (J2000), with an uncertainty of 3 arcmin
(radius, 90% containment, stat+sys).  The BAT light curve shows a multi-peak
structure with a total duration of ~20 sec.  The peak count rate was
~1500 counts/sec (15-350 keV), at ~1 seconds after the trigger.

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TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4424
SUBJECT: Time Correction to GRB 060102
DATE:    06/01/02 22:13:50 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <Scott@lheamail.gsfc.nasa.gov>

S. Barthelmy (GSFC), D. Burrows (PSU), M. Chester (PSU),
N. Gehrels (GSFC), S. Immler (GSFC), A. Retter (PSU), T. Sakamoto (GSFC)
on behalf of the Swift team:

We correct the trigger time for GRB 060102 (trigger=175603)
in GCN Circular #4423.  A data corruption problem caused 
the conversion from spacecraft time to Universal Time to be off 
by 16 million seconds.  The correct trigger time for GRB 060102 
is 21:17:28 UT (+/- ~2 sec for the unknown correction factor).

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TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4425
SUBJECT: GRB 060102: Swift-BAT refined analysis
DATE:    06/01/03 04:05:22 GMT
FROM:    Takanori Sakamoto at NASA/GSFC  <takanori@milkyway.gsfc.nasa.gov>

H. Krimm (GSFC/USRA), L. Barbier (GSFC), S. Barthelmy (GSFC), 
M. Chester (PSU), J. Cummings (GSFC/NRC), E. Fenimore (LANL), 
N. Gehrels (GSFC), D. Hullinger (UMD), C. Markwardt (GSFC/UMD), 
F. Marshall (GSFC), D. Palmer (LANL), A. Parsons (GSFC), 
T. Sakamoto (GSFC/NRC), G. Sato (ISAS), J. Tueller (GSFC), 
on behalf of the Swift-BAT team:

Using the data set from T-119.9 to T+248.2 sec from the recent 
telemetry downlink, we report further analysis of BAT GRB 060102 
(trigger #175603)  (Retter, et al., GCN 4423).  
The BAT ground-calculated  position is 
(RA,Dec) = 328.834, -1.838 {21h 55m 20.3s, -1d 50' 17.8"} [deg; J2000] 
+- 2.8 arcmin, (radius, sys+stat, 90% containment).  
The partial coding was 89 %.  

The BAT light curve shows a single peak of about three seconds followed 
by the small bump at T+16 sec.  T90 (15-350 keV) is (21 +- 2) sec 
(estimated error including systematics).  
 
The power law index of the time-averaged spectrum is 1.19 +- 0.38. 
The fluence in the 15-150 keV band is (2.4 +- 0.5) x 10^-07 erg/cm2. 
The 1-sec peak photon flux measured from T+0.72 sec in the 15-150 keV 
band is (0.4 +- 0.1) ph/cm2/sec.  All the quoted errors are at the 90% 
confidence level.  

A data glitch caused the original GCN Notices to go out with 
the wrong burst trigger time (02:45:43 instead of 21:17:28 UT). 
This was not realized during the first circular (#4423), 
but was corrected in circular 4424. 

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TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4427
SUBJECT: GRB 060102: MDM Observation
DATE:    06/01/03 09:53:06 GMT
FROM:    Jules Halpern at Columbia U.  <jules@astro.columbia.edu>

E. Armstrong (UCSD), J. P. Halpern, S. Tyagi, &  N. Zimmerman (Columbia U.)
report on behalf of the MDM Observatory GRB follow-up team:

"We observed the position of GRB 060102 in the R band using the MDM 1.3m.
The sum of three 5-minute exposures beginning on Jan. 3 02:28 UT, or
5.2 hours after the burst, shows no new object within the revised BAT
error circle (Krimm et al., GCN 4425) to a 5-sigma limit of R > 20.5
(statistical + systematic) in comparison with the Digitized Sky Survey."  

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TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4434
SUBJECT: GRB 060102 - no XRT afterglow
DATE:    06/01/05 19:59:29 GMT
FROM:    Alon Retter at PSU  <retter@astro.psu.edu>

A. Retter, J. Kennea, D. Burrows, D. Grupe, J. Nousek (PSU);
N. Gehrels (GSFC)

GRB 060102 (trigger #175603; Retter et al. GCN 4423) was observed with
the XRT for 2 ksec about 47 hours after the BAT trigger. No afterglow
candidate was found. The 3-sigma upper limit is 0.003 counts/s (1.5e-13
ergs/s/cm^2). Earlier observations were prohibited by sun and moon
constraints. No further observations are planned.