FLASH REPORTS -- NOVA ID=9543899764

NOVA ID=9543899764

X-ray burst from 4U 1820-303

Alert Mail

[Ground Trigger ID]
ID          :  9543899764

[Count Weighted Position]
RA,Dec: (275.920, -30.361)
Galac.: (  2.795,  -7.924)
Eclip.: (275.145,  -7.027)

[Triggered Criteria]

[Highest Significance]
DPTC  : 1321917945
UT    : 2021/11/25 23:26:05
on    : 3s (S-band)
sigma : 22.2

[Observed flux]
S :    911 +-    41 mCrab ( 3-10keV)
L :    629 +-    48 mCrab ( 2- 4keV)
M :   1442 +-    73 mCrab ( 4-10keV)
H :   1261 +-   152 mCrab (10-20keV)

nearby(r<5deg) object
=====================
dist  flux  (RA, Dec)        name
[deg][mCrab]  [deg]
=====================
0.00    429.1 (275.92, -30.36)  NGC 6624,H 1820-303
2.94     10.3 (274.43, -33.02)  XTE J1817-330 with XTE J1814-338
3.25  unknown (276.24, -33.60)  fermi-#658764238!GCN
3.67     20.5 (278.93, -32.99)  RX J1832-33,XB 1832-330
3.74     32.6 (271.75, -29.41)  XTE J1807-294
3.77  unknown (271.86, -29.01)  V5585 Sgr
3.89  unknown (273.99, -33.89)  IGR J18159-3353
4.02  unknown (273.41, -33.77)  XTE J1814-338 with XTE J1817-330
4.49     -0.8 (270.76, -29.83)  MAXI J1803-298
4.89  unknown (271.78, -33.78)  V5583 Sgr

[Sun/Moon (RA, Dec)]
Sun :  (241.603, -20.882)
Sun dist:  32.2
Moon:  (139.779, 20.998)
age: 21.12 day

[Latitude/Longitude]
(15.36S, 166.45W)

Images

Lightcurve

Image

ALL	LOW (2 - 4 keV)	MED (4 - 10 keV)	HIGH (10 - 20 keV)

Spectrum

Past Variability

No	maxitime (ut)		Image	lc
No	Start	End	Image	lc
1	691114032.025 (2021-11-25T00:07:07)	691114373.879 (2021-11-25T00:12:48)		link to lc
2	691119673.035 (2021-11-25T01:41:08)	691119953.371 (2021-11-25T01:45:48)		link to lc
3	691125253.075 (2021-11-25T03:14:08)	691125528.385 (2021-11-25T03:18:43)		link to lc
4	691130823.373 (2021-11-25T04:46:58)	691131110.214 (2021-11-25T04:51:45)		link to lc
5	691136397.284 (2021-11-25T06:19:52)	691136688.559 (2021-11-25T06:24:43)		link to lc
6	691142017.117 (2021-11-25T07:53:32)	691142268.096 (2021-11-25T07:57:43)		link to lc
7	691147596.737 (2021-11-25T09:26:31)	691147851.387 (2021-11-25T09:30:46)		link to lc
8	691153387.100 (2021-11-25T11:03:02)	691153642.028 (2021-11-25T11:07:17)		link to lc
9	691158857.255 (2021-11-25T12:34:12)	691159025.245 (2021-11-25T12:37:00)		link to lc
10	691164552.645 (2021-11-25T14:09:07)	691164623.368 (2021-11-25T14:10:18)		link to lc
11	691181147.284 (2021-11-25T18:45:42)	691181344.822 (2021-11-25T18:48:59)		link to lc
12	691186731.050 (2021-11-25T20:18:46)	691186923.831 (2021-11-25T20:21:58)		link to lc
13	691192307.391 (2021-11-25T21:51:42)	691192498.068 (2021-11-25T21:54:53)		link to lc
14	691197877.376 (2021-11-25T23:24:32)	691198076.424 (2021-11-25T23:27:51)		link to lc
15	691203466.717 (2021-11-26T00:57:41)	691203665.449 (2021-11-26T01:01:00)		link to lc
16	691209156.754 (2021-11-26T02:32:31)	691209348.896 (2021-11-26T02:35:43)		link to lc
17	691214736.827 (2021-11-26T04:05:31)	691214925.042 (2021-11-26T04:08:40)		link to lc
18	691220306.896 (2021-11-26T05:38:21)	691220500.082 (2021-11-26T05:41:35)		link to lc
19	691225887.378 (2021-11-26T07:11:22)	691226076.264 (2021-11-26T07:14:31)		link to lc
20	691231467.552 (2021-11-26T08:44:22)	691231655.001 (2021-11-26T08:47:30)		link to lc
21	691237047.654 (2021-11-26T10:17:22)	691237230.751 (2021-11-26T10:20:25)		link to lc

Localization Error Box

Follow-up Obs.