Object: 0155+0250 On scan num: 948 950 952 Off scan num: 949 951 953 R.A.: 1.968470 hrs Dec.: 3.085197 deg On azimuth: 191.501797 deg On zenith dist.: 35.775419 deg Off azimuth: 191.472906 deg Off zenith dist.: 35.772839 deg MJD: 52284 UTC: 0.017049 Center freq.: 1394.993983 MHz Doppler: -0.00009879 Num. correlators: 2 Spectrom. atten.: 33 38 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 900 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: 0.048 Jy Lower 20% velocity: 5351.2 km/s Upper 20% velocity: 5679.3 km/s Systemic velocity: 5515.2 km/s Line width (20%): 328.2 km/s Profile integral: 9.87 Jy * km/s A: 7.77 B: 9.99 Ratio B/A: 1.286 Flux integral velocity range: 5292.7 - 5748.1 km/s
peculiar asymmetric profile