Network Monitoring Experiment
Selected results from the JIVE SFXC software correlator
22 February 2024
Mode:
3.6 cm, 4096 Mbps, 32 BBC channels, 32 MHz filters, 2-bit sampling.
Participating antennas:
Westerbork (Wb), Effelsberg (Ef), Medicina (Mc), Noto (Nt), Onsala 20m (O6), Tianma 65m (T6),
Urumqi (Ur), Torun (Tr), Yebes 40m (Ys), Hartebeesthoek (Hh), Irbene 32m (Ir), Kunming (Km).
With 2 s integration times on
J0319+4130 (scans 1-4), J0530+1331 (scans 5-10), and J0555+3948 (scans 11-14).
Notes:
-- Ef out after scan 6. Km out in scan 2 and after scan 10.
-- Mc bottom IF loses sensitivity. Although most 4 Gbps stations do to some degree at the band edges.
-- Ir autos show quite a lot of noise and scatter across IFs.
-- Tr polarization inputs were swapped (was corrected in vex).
-- Km recorded with a 2Gbps Mk6 VDIF setup. (They can also do 4 Gbps, but not tested here.)
-- Scan 4 is the best: brightest source, Ef as refence, all stations, fringes to everyone.
scan02
2 second integration. Source = J0319+4130. 14:10 UT.
Reference station = Ef. Clocks centered. Large search window.
scan04
2 second integration. Source = J0319+4130. 14:40 UT.
Reference station = Ef. Clocks centered. All stations in. Small search window.
Auto-correlation plots
Cross-correlation plots
scan06
2 second integration. Source = J0530+1331. 15:10 UT.
Reference station = Ef.
scan08
2 second integration. Source = J0530+1331. 15:40 UT.
Reference station = Ys.
scan10
2 second integration. Source = J0530+1331. 16:10 UT.
Reference station = Ys.
scan12
2 second integration. Source = J0555+3948. 16:40 UT.
Reference station = Ys.
Auto-correlation plots
Cross-correlation plots
scan14
2 second integration. Source = J0555+3948. 16:59 UT.
Reference station = Mc.