Object: 0155+0250 On scan num: 526 528 530 Off scan num: 527 529 531 R.A.: 1.968465 hrs Dec.: 3.085203 deg On azimuth: 162.249232 deg On zenith dist.: 36.510768 deg Off azimuth: 162.221288 deg Off zenith dist.: 36.514954 deg MJD: 52267 UTC: 0.015787 Center freq.: 1395.007048 MHz Doppler: -0.00008942 Num. correlators: 2 Spectrom. atten.: 34 40 dB Bandwidth: 10.0 MHz Num. channels: 1024 Eff. integration: 900 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 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 1.
Peak intensity: 0.046 Jy Lower 20% velocity: 5357.2 km/s Upper 20% velocity: 5689.0 km/s Systemic velocity: 5523.1 km/s Line width (20%): 331.8 km/s Profile integral: 9.72 Jy * km/s A: 8.29 B: 10.24 Ratio B/A: 1.236 Flux integral velocity range: 5299.1 - 5739.5 km/s
very asymmetric profile