Swift BAT 157-Month Hard X-ray Survey » SWIFT J1521.0-5711

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General Information:

Swift Name:	SWIFT J1521.0-5711
RA:	230.1628 (J2000)
Dec:	-57.1729 (J2000)
S/N:	60.76
Counterpart Name:	Cir X-1
Ctpt RA:	230.1703 (J2000)
Ctpt Dec:	-57.1667 (J2000)
Flux:	66.83 (65.43, 68.26) × 10^-12 ergs s^-1 cm^-2, (14-195 keV)
Gamma:	4.89 (4.78, 4.99)
Chi²_{r_:}	4.04
Redshift:	NA
Luminosity:	NA log[ergs s^-1] (14-195 keV)
AS:	1
Class:	13
Type:	HMXB

SIMBAD
NED

BAT 157-Month Lightcurve:

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1521.0-5711

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1521.0-5711

Lightcurve:

BAT 157-Month Spectrum:

BAT Spectrum for SWIFT J1521.0-5711

BAT Spectrum for SWIFT J1521.0-5711

SWIFT_J1521.0-5711.pha

BAT Hard X-ray Transient Source Page:

http://swift.gsfc.nasa.gov/docs/swift/results/transients/CirX-1/

Data last modified: 15 Sep 2025
Page last modified: 03 Jun 2025