Object: 1215+055 On scan num: 108 110 112 114 116 118 Off scan num: 109 111 113 115 117 119 R.A.: 12.307737 hrs Dec.: 5.617488 deg On azimuth: 98.907738 deg On zenith dist.: 69.964786 deg Off azimuth: 98.877052 deg Off zenith dist.: 70.000455 deg MJD: 52603 UTC: 0.363287 Center freq.: 1411.950796 MHz Doppler: 0.00008883 Num. correlators: 2 Spectrom. atten.: 38 38 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1740 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: 0.003 Jy Lower 20% velocity: 1733.4 km/s Upper 20% velocity: 1873.5 km/s Systemic velocity: 1803.4 km/s Line width (20%): 140.1 km/s Profile integral: 0.35 Jy * km/s A: 0.42 B: 0.26 Ratio B/A: 0.611 Flux integral velocity range: 1715.5 - 1880.3 km/s