Object: 0237+384 On scan num: 770 772 774 776 778 780 Off scan num: 771 773 775 777 779 781 R.A.: 2.675816 hrs Dec.: 38.900128 deg On azimuth: 280.864505 deg On zenith dist.: 23.986526 deg Off azimuth: 280.738556 deg Off zenith dist.: 23.655231 deg MJD: 52244 UTC: 0.222778 Center freq.: 1417.075663 MHz Doppler: -0.00003167 Num. correlators: 2 Spectrom. atten.: 33 39 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 1800 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 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 1.
Peak intensity: 0.020 Jy Lower 20% velocity: 545.0 km/s Upper 20% velocity: 839.2 km/s Systemic velocity: 692.1 km/s Line width (20%): 294.1 km/s Profile integral: 3.03 Jy * km/s A: 2.07 B: 3.68 Ratio B/A: 1.778 Flux integral velocity range: 519.1 - 854.6 km/s
very likely blended profiles, wing locations are just guesses