Object: SL1655+6314 On scan num: 935 937 939 941 943 945 Off scan num: 936 938 940 942 944 946 R.A.: 16.925945 hrs Dec.: 63.242536 deg On azimuth: 326.844121 deg On zenith dist.: 37.547892 deg Off azimuth: 327.265951 deg Off zenith dist.: 36.809261 deg MJD: 52244 UTC: 0.861539 Center freq.: 1389.124540 MHz Doppler: 0.00001000 Num. correlators: 2 Spectrom. atten.: 35 41 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 1680 seconds
This spectrum is the integration of all data for the scan with spectra from both polarizations added together. The spectral intensities are Ssys * (on - off) / off, where Ssys is the system temperature in Jy. The system noise flux density equivalent is calibrated for each scan with a calibration noise source firing during each scan. The cal value, in Jy, is calibrated by comparison with a number of continuum sources as described in the summary web page
This spectrum is the same as Figure 1 but with 3 60-second sub-integrations manually deleted because of interference or a bad baseline.
This is the section of spectrum measured to obtain the parameters listed below. The three horizontal dotted lines are the baseline, the peak level selected, and 20% of the peak level. The two vertical dotted lines mark the selected 20% line width edges. The solid horizontal line marks the velocity range chosen for the the line profile flux density integral. This spectrum has a second-order least squares fit baseline removed using most of the baseline shown in Figure 2. Narrow band interference was removed from 7 channels by interpolation between the nearest valid channels
Peak intensity: 0.023 Jy Lower 20% velocity: 6645.5 km/s Upper 20% velocity: 6871.2 km/s Systemic velocity: 6758.3 km/s Line width (20%): 225.7 km/s Profile integral: 3.22 Jy * km/s A: 2.90 B: 3.19 Ratio B/A: 1.100 Flux integral velocity range: 6610.7 - 6899.5 km/s
profile edges very poorly defined