Object: SL1728+5732 On scan num: 369 371 373 375 377 379 Off scan num: 370 372 374 376 378 380 R.A.: 17.473390 hrs Dec.: 57.545097 deg On azimuth: 316.773271 deg On zenith dist.: 43.958220 deg Off azimuth: 316.743060 deg Off zenith dist.: 43.296312 deg MJD: 52234 UTC: 0.952257 Center freq.: 1381.375554 MHz Doppler: -0.00000170 Num. correlators: 2 Spectrom. atten.: 34 42 dB Bandwidth: 5.0 MHz Num. channels: 1024 Eff. integration: 1200 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 20 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 6 channels by interpolation between the nearest valid channels
Peak intensity: 0.026 Jy Lower 20% velocity: 8416.5 km/s Upper 20% velocity: 8703.2 km/s Systemic velocity: 8559.9 km/s Line width (20%): 286.8 km/s Profile integral: 4.07 Jy * km/s A: 3.24 B: 4.63 Ratio B/A: 1.428 Flux integral velocity range: 8391.6 - 8721.9 km/s
very poorly defined profile, RFI on high velocity wing