IceCube-250406A: Swift observation summary

Mission:	IceCube
Neutrino RA:	81.470°
Neutrino Dec:	+16.960°
Neutrino Err:	28.7 arcmin
T0:	2025-04-06 22:50:35 UT
Galactic:	187.75° -10.22°
Galactic N_H:	2.33× 10²¹ cm^-2

Sun distance:	64.92°
Sun angle:	4.39 [hr] (East of Sun)
Moon distance:	48.63°
Visibility of this field.
First slew:	2025-04-08 03:23:44 UT
First observation:	2025-04-07 22:20:59 UT
First analysis:	2025-04-08 10:41:37 UT

About tiled field analysis.

So far 6 fields have been scheduled for observations. Data are available and processed for 6 of these.

19685 — 699 s of cleaned data taken between 2025-04-07 22:21:28 and 2025-04-07 22:35:46
19693 — 900 s of cleaned data taken between 2025-04-07 22:35:50 and 2025-04-08 03:11:27
19694 — 707 s of cleaned data taken between 2025-04-08 03:11:31 and 2025-04-08 03:23:39
19695 — 428 s of cleaned data taken between 2025-04-07 23:55:08 and 2025-04-08 00:10:22
19696 — 707 s of cleaned data taken between 2025-04-08 00:10:26 and 2025-04-08 00:22:34
19697 — 707 s of cleaned data taken between 2025-04-08 03:23:42 and 2025-04-08 03:35:52

Find an upper limit.

Sources found so far

So far 4 sources have been found in the XRT data. 3 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Rank³	Dist from IceCube pos	Exposure	Notes
1 [details]	05h 24m 56.10s81.23375°	+17° 03′ 57.8″17.06605°	4.7′′	Good	4 (K)	15.0′	1.1 ks	Matches SIMBAD source: 1RXS J052456.3+170400, 0.9″ away. Matches known X-ray source: 1RXS J052456.3+170400 (from ROSAT/RASSFSC), 3.92798647643192″ away.
Mean XRT rate: 3.0 (±0.7) ×10^-2 ct s^-1 Peak XRT rate: 3.0 (±0.7) ×10^-2 ct s^-1 0.30 σ below the catalogued flux from ROSAT/RASSFSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.053 (±0.013) ct s^-1 Peak XRT rate converted to PSPC: 0.053 (±0.013) ×10^-2 ct s^-1 Mean XRT flux: 5.8 (±1.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.8 (±1.4) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum
2 [details]	05h 24m 27.12s81.11301°	+17° 23′ 23.2″17.38977°	5.1′′	Good	4 (K)	32.9′	428 s	This source may be affected by optical loading Matches known X-ray source: 1RXS J052425.7+172301 (from ROSAT/RASSBSC), 30.1150612850638″ away.
Mean XRT rate: 5.1 (+1.6, -1.3) ×10^-2 ct s^-1 Peak XRT rate: 5.1 (+1.6, -1.3) ×10^-2 ct s^-1 21.72 σ below the catalogued flux from ROSAT/RASSBSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 0.092 (+0.030, -0.024) ct s^-1 Peak XRT rate converted to PSPC: 0.092 (+0.030, -0.024) ×10^-2 ct s^-1 Mean XRT flux: 8.7 (+2.8, -2.3) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 8.7 (+2.8, -2.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum
3 [details]	05h 24m 25.16s81.10483°	+17° 22′ 40.9″17.37803°	8.0′′	Good	4 (K)	32.7′	428 s	This source may be affected by optical loading Matches SIMBAD source: * 111 Tau, 20.3″ away. Matches known X-ray source: 1RXS J052425.7+172301 (from ROSAT/RASSBSC), 21.5317342425306″ away.
Mean XRT rate: 4.2 (+1.5, -1.2) ×10^-2 ct s^-1 Peak XRT rate: 4.2 (+1.5, -1.2) ×10^-2 ct s^-1 15.95 σ below the catalogued flux from ROSAT/RASSBSC. RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (PSPC count-rate) Mean XRT rate converted to PSPC: 4.7 (+1.6, -1.3) ct s^-1 Peak XRT rate converted to PSPC: 4.7 (+1.6, -1.3) ×10^-4 ct s^-1 Mean XRT flux: 5.5 (+2.0, -1.6) ×10^-9 erg cm^-1s^-1 Peak XRT flux: 5.5 (+2.0, -1.6) ×10^-9 erg cm^-1s^-1 Products: Light curve \| Spectrum
4 [details]	05h 24m 40.82s81.17009°	+16° 32′ 36.4″16.54345°	8.4′′	Poor	3 (U)	30.4′	900 s
Mean XRT rate: 8 (+5, -3) ×10^-3 ct s^-1 Peak XRT rate: 8 (+5, -3) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 0.02 ct s^-1 (PSPC count-rate) Products: Light curve \| Spectrum

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the LSXPS documentation.

³ T=Transient Source, O=Outbursting known source, U=Uncatalogued X-ray source, K=Known X-ray source.

^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

Image

Select image style: Draggable PNG | JS9.

Magnify image and make scrollable?

FITS image.

Exposure map

Magnify exposure map and make scrollable?

FITS exposure map.