Object: 14-00 On scan num: 25 27 Off scan num: 26 28 R.A.: 11.754953 hrs Dec.: -17.273835 deg On azimuth: 181.675365 deg On zenith dist.: 55.636560 deg Off azimuth: 181.661332 deg Off zenith dist.: 55.636166 deg MJD: 52806 UTC: 0.978391 Center freq.: 1416.494728 MHz Doppler: -0.00009234 Num. correlators: 2 Spectrom. atten.: 0 0 dB Bandwidth: 12.5 MHz Num. channels: 8192 Eff. integration: 570 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 2 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.
Peak intensity: 0.041 Jy Lower 20% velocity: 1216.1 km/s Upper 20% velocity: 1244.3 km/s Systemic velocity: 1230.2 km/s Line width (20%): 28.3 km/s Profile integral: 0.82 Jy * km/s A: 0.81 B: 0.84 Ratio B/A: 1.043 Flux integral velocity range: 1211.6 - 1261.6 km/s