Object: 501-043 On scan num: 2243 2245 2247 2249 2251 2253 Off scan num: 2244 2246 2248 2250 2252 2254 R.A.: 0.923089 hrs Dec.: 30.489207 deg On azimuth: 249.765192 deg On zenith dist.: 17.967579 deg Off azimuth: 249.733664 deg Off zenith dist.: 17.951840 deg MJD: 52254 UTC: 0.091435 Center freq.: 1396.315727 MHz Doppler: -0.00007608 Num. correlators: 2 Spectrom. atten.: 34 40 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. Narrow band interference was removed from 4 channels by interpolation between the nearest valid channels
Peak intensity: 0.005 Jy Lower 20% velocity: 5053.1 km/s Upper 20% velocity: 5264.2 km/s Systemic velocity: 5158.6 km/s Line width (20%): 211.1 km/s Profile integral: 0.69 Jy * km/s A: 0.13 B: 0.66 Ratio B/A: 4.967 Flux integral velocity range: 5023.6 - 5296.6 km/s
very low SNR, locations of profile edges are only guesses