Object: 1814+2205B On scan num: 285 287 289 291 293 295 Off scan num: 286 288 290 292 294 296 R.A.: 18.277965 hrs Dec.: 22.112900 deg On azimuth: 261.254496 deg On zenith dist.: 42.577887 deg Off azimuth: 261.220086 deg Off zenith dist.: 42.542033 deg MJD: 52457 UTC: 0.332037 Center freq.: 1394.355388 MHz Doppler: -0.00000640 Num. correlators: 2 Spectrom. atten.: 35 42 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 1680 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 3 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: 0.012 Jy Lower 20% velocity: 5312.2 km/s Upper 20% velocity: 5724.0 km/s Systemic velocity: 5518.1 km/s Line width (20%): 411.8 km/s Profile integral: 3.71 Jy * km/s A: 3.98 B: 2.69 Ratio B/A: 0.676 Flux integral velocity range: 5267.9 - 5761.7 km/s
very poorly defined profile, edge locations only guesses