Object: U2855x On scan num: 101 Off scan num: 102 R.A.: 3.806299 hrs Dec.: 70.126321 deg On azimuth: 349.791376 deg On zenith dist.: 32.767587 deg Off azimuth: 351.468450 deg Off zenith dist.: 32.396705 deg MJD: 52233 UTC: 0.259433 Center freq.: 1414.739185 MHz Doppler: 0.00001729 Num. correlators: 2 Spectrom. atten.: 38 42 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 120 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. Narrow band interference was removed from 3 channels by interpolation between the nearest valid channels
Peak intensity: 0.224 Jy Lower 20% velocity: 974.8 km/s Upper 20% velocity: 1419.0 km/s Systemic velocity: 1196.9 km/s Line width (20%): 444.1 km/s Profile integral: 86.40 Jy * km/s A: 69.14 B: 75.38 Ratio B/A: 1.090 Flux integral velocity range: 932.0 - 1457.6 km/s