The Neil Gehrels Swift Observatory

General Information:

BAT image for SWIFT J1209.4+4340

BAT Hard X-ray Image
(5 degrees on a side, red = BAT sig 14-24,
green = BAT sig 24-50, BAT sig 50-100

Optical image for SWIFT J1209.4+4340

Optical Image
(3 arcmin on a side, red = DSS 2 IR,
green = DSS 2 red, blue = DSS 2 blue

Source Number:88
Swift Name:SWIFT J1209.4+4340
ID:NGC 4138
RA deg:182.3741 (J2000)
Dec deg:43.6853 (J2000)
>15 deg:y~
SNR:4.53
fBAT:2.1 x 10-11 ergs/cm2/sec (14-195 keV)
z:0.002962
Log(L[ergs s-1]):41.62 (14-195 keV)
Log(nH[cm-2]):22.90
Reference:
Cmplx:
Type:Sy 1.9
Note:
J mag:9.90
fROSAT Rate: cts/sec

BAT 9-month Lightcurves:

BAT 4-Day Light Curve for NGC 4138

BAT 4-Day Light Curve for NGC 4138

All BAT 9-month Lightcurves:

BAT Spectrum:

Includes the .pha file and the diagonal response matrix.

BAT Hard X-ray Transient Source Page:

Data last updated: 19 Mar 2012