Object: 0000+2142 On scan num: 216 218 220 Off scan num: 217 219 221 R.A.: 0.052530 hrs Dec.: 21.959396 deg On azimuth: 232.903289 deg On zenith dist.: 24.077024 deg Off azimuth: 232.874314 deg Off zenith dist.: 24.066215 deg MJD: 52265 UTC: 0.027755 Center freq.: 1389.655366 MHz Doppler: -0.00009413 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. Narrow band interference was removed from 5 channels by interpolation between the nearest valid channels
Peak intensity: 0.006 Jy
Lower 20% velocity: 6449.4 km/s
Upper 20% velocity: 6762.9 km/s
Systemic velocity: 6606.1 km/s
Line width (20%): 313.6 km/s
Profile integral: 1.62 Jy * km/s
A: 0.96
B: 1.64
Ratio B/A: 1.708
Flux integral
velocity range: 6422.7 - 6790.9 km/s
marginal detection, edge locations just guesses