Object: I1743 On scan num: 532 534 536 Off scan num: 533 535 537 R.A.: 1.883191 hrs Dec.: 12.707897 deg On azimuth: 178.146349 deg On zenith dist.: 25.647607 deg Off azimuth: 178.135959 deg Off zenith dist.: 25.647758 deg MJD: 52267 UTC: 0.039028 Center freq.: 1399.000101 MHz Doppler: -0.00008885 Num. correlators: 2 Spectrom. atten.: 34 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 780 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 4 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: 0.023 Jy Lower 20% velocity: 4342.7 km/s Upper 20% velocity: 4783.9 km/s Systemic velocity: 4563.3 km/s Line width (20%): 441.2 km/s Profile integral: 7.69 Jy * km/s A: 6.92 B: 7.16 Ratio B/A: 1.035 Flux integral velocity range: 4290.8 - 4843.2 km/s