| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB100218194 |
|
| T0 |
4:38:42.349 UTC |
Fermi_GBM |
| ra |
206.6400° |
Fermi_GBM |
| decl |
-11.9400° |
Fermi_GBM |
| pos_error |
3.85e+00° |
Fermi_GBM |
| T90 |
29.185 s |
Fermi_GBM |
| T90_error |
5.813 s |
Fermi_GBM |
| T90_start |
4:38:42.349 UTC |
Fermi_GBM |
| fluence |
2.64e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
9.87e-08 erg/cm² |
Fermi_GBM |
| T100 |
29.185 s |
|
| GBM_located |
True |
|
| mjd |
55245.19354570602 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB100218194 |
| trigger_name |
bn100218194 |
| ra |
206.6400° |
| decl |
-11.9400° |
| pos_error |
3.85e+00° |
| datum |
2010-02-18 |
| t_trigger |
4:38:45.933 UTC |
| T90 |
29.185 s |
| T90_error |
5.813 s |
| T90_start |
4:38:42.349 UTC |
| fluence |
2.64e-06 erg/cm² |
| fluence_error |
9.87e-08 erg/cm² |
| flux_1024 |
1.41e+00 erg/cm²/s |
| flux_1024_error |
1.36e-01 erg/cm²/s |
| flux_1024_time |
6.85e+00 erg/cm²/s |
| flux_64 |
3.66e+00 erg/cm²/s |
| flux_64_error |
8.64e-01 erg/cm²/s |
| GCN 10431 table |
|---|
| GRB_name |
GRB100218A |
| GCN_number |
10431 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
4:38:45.930 UTC |
| ra |
206.6000° |
| decl |
-11.9000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 10431
SUBJECT: GRB 100218A : Fermi GBM detection
DATE: 10/02/19 16:48:55 GMT
FROM: David Tierney at UCD
Dave Tierney (UCD)
reports on behalf of the Fermi GBM Team:
"At 04:38:45.93 UT on 18 February 2010, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 100218A (trigger 288160727 / 100218194).
The on-ground calculated location, using the GBM trigger
data, is RA = 206.6, DEC = -11.9 (J2000 degrees,
equivalent to 13 h 46 m, -11 d 54 '), with an uncertainty
of 2.2 degrees (radius, 1-sigma containment,
statistical only; there is additionally a systematic
error which is currently estimated to be 2 to 3 degrees).
The angle from the Fermi LAT boresight is 37 degrees.
The GBM light curve consists of a single pulse
with a duration (T90) of about 30.8 +/- 1.6 s (8-1000 keV).
The time-averaged spectrum from T0-4.1 s to T0+28.67 s
is best fit by a power law function with an exponential
high energy cutoff. The power law index is -0.50 (+0.28/-0.25) and
the cutoff energy, parameterized as Epeak, is 184.20 (+52.40/-29.70) keV
(cstat 845 for 485 d.o.f.).
The event fluence (8-1000 keV) in this time interval is
(2.58 +/- 0.21)E-6 erg/cm^2. The 1-sec peak photon flux measured
starting from T0+4.7 s in the 8-1000 keV band
is 1.4 +/- 0.2 ph/s/cm^2.
A Band function fits the spectrum equally well (cstat 840 for 484 d.o.f.)
with Epeak= 131.60 (+32.70/-21.70) keV, alpha = -0.14 (+0.41/-0.33)
and beta = -2.00 (+0.18/-0.30).
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
|