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Swift J103738.0+403701

Classification: Confirmed transient

Total | Soft | Medium | Hard | Exposure

Postage stamp image of Swift J103738.0+403701

This image is 160 pixels (=6.3′ to a side).
Swift J103738.0+403701 is indicated by the cross-hairs.

Detection flag:
Good
RA (J2000):
10h 37m 38.01s=159.4084°
Dec (J2000):
+40° 37′ 00.4″=+40.6168°
Err90:
5.7′′
l:
+178° 09′ 10.7″=178.1530°
b:
+59° 22′ 27.0″=+59.3742°
LSXPS_ID:
LSXPS J103738.0+403701.
First detected:
2024-10-23 02:11:28
Obs 03112102015
Discovery time
2024-10-23 02:33:36
Peak rate
1.4 (+0.6, -0.5) ×10-2 (0.3 — 10 keV)
Historical upper limits
6.60 ×10-3 (0.3 — 10 keV; 3-σ)
(from LSXPS [03112102008]) [Show all limits].
LSXPS:
6.60 ×10-3 ct/sec (0.3—10 keV)
(03112102008)
XMM:
Canned
1.69 ×10-2 ct/sec (0.3—10 keV)
Disc spec
1.42 ×10-2 ct/sec (0.3—10 keV)
Full spec
1.15 ×10-2 ct/sec (0.3—10 keV)
Native
0.26 ct/sec (native, 0.2—12 keV)
Mode / filter
SLEW, pn, Medium
ROSAT:
Canned
1.72 ×10-2 ct/sec (0.3—2 keV)
2.60 ×10-2 ct/sec (0.3—10 keV)
Disc spec
1.09 ×10-2 ct/sec (0.3—2 keV)
1.48 ×10-2 ct/sec (0.3—10 keV)
Full spec
7.85 ×10-3 ct/sec (0.3—2 keV)
9.34 ×10-3 ct/sec (0.3—10 keV)
Native
3.75 ×10-2 ct/sec (native, 0.2—2 keV)
Outburst significance
1.48 σ
Search 5-σ radius
SIMBAD |Vizier.
XRT Team comments:
Probable stellar flare: matches a star in USNO-B1 with B-R~0.8, which is consistent with F5 star

Light curve (0.3 — 10 keV)

GRB binning | ObsID binning | Snapshot binning.

Show plot axis controls or click to zoom [more].


Data file

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Spectrum - discovery observation only

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Discovery spectrum of Swift J103738.0+403701
NH3.8 (+1.98 × 107, -3.8) × 1014 cm-2
z of absorber0
Photon index1.8 (+1.0, -0.8)
Flux (0.3-10 keV)
(Observed)
2.6 (+1.9, -1.3) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.7 (+2.6, -1.3) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.27 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.40 × 10-11 erg cm-2 ct-1
W-stat
What's this?(dof)
16.92 (7)
Spectrum exposure2.0 ks

Spectrum - all available data

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Discovery spectrum of Swift J103738.0+403701
NH4.0 (+1.14 × 107, -4.1) × 1014 cm-2
z of absorber0
Photon index2.2 (+0.9, -0.5)
Flux (0.3-10 keV)
(Observed)
4.9 (+2.0, -1.8) × 10-14 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.8 (+2.1, -1.6) × 10-14 erg cm-2 s-1
Counts to flux (obs)2.71 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)2.66 × 10-11 erg cm-2 ct-1
W-stat
What's this?(dof)
38.26 (30)
Spectrum exposure28.0 ks

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Data for your light curve

Swift J103738.0+403701 — binning.