06-04-2006 (MJD 53831) ---------------------- Observing went smoothly. I had to rebalance the power twice because it dropped too low, nothing to report otherwise. Redetections: J1850+0026 (G33.21+00.41.C_53831_0093.3.ps.gz) B1900+06 (G39.71+00.49.C_53831_0108.2.ps.gz) (PALFA) J1946+25 (G61.97+00.21.C_53831_0153.3.ps.gz) Class 2 cands: 2 periodic, 5 single pulse (all with just one burst at high dm, which may be scattered radar) Even with the filters applied, heavy radar showed up after 8am. 07-04-2006 (MJD 53832) ---------------------- Redetections: B1900+06 (G39.90+00.31.C_53832_0108.1.ps.gz) J1957+2831 (G65.62-00.22.C_53832_0165.1.ps.gz) Class 2 cands: 5 single pulse, all with just one burst There are some gaps in the quicklook processing of beams 2 & 3. It appears one node was crashing, so David C. removed it. 08-04-2006 (MJD 53833) ---------------------- I had to rebalance the power several times because it dropped too low, but seemed to stabilize in the second half of the session. Quicklook: complains that it can't find the command giant_plot, and some of the .ps giant pulse plots have a blank page. All the nodes have /home/alfa/bin in their paths (which is where this executable is), so not sure what's wrong. I emailed David about it. The gif files do get made correctly. Events in the GP plots are a lot fewer than last time I observed (in Nov.)-- most likely due to the new filters because the code hasn't changed since then. New pulsars!: J1948+25 (Beam 4: G62.16+00.04.C_53833_0085.1.ps, G62.16+00.04.C_53833_0085.pulse.ps) P = 196.61ms DM = 282.6 Shows up both in periodicity and single pulse search. The SNR is very high(88), so I was surprised that the corresponding North pointing hadn't found it already. J2007+31 (Beam 1: G69.10-00.47.C_53833_0112.10.ps) P = 608.18ms DM = 204.9 J1938+22 (Beam 4: G57.81+00.23.C_53833_0064.pulse.ps.gz) Two bursts, one very strong overlapping a weaker one. Redetections: J1907+0740 (G41.65-00.09.C_53833_0046.1.ps.gz) J1908+0734 (G41.65-00.09.C_53833_0046.8.ps.gz) (PALFA) J1919+13 (G47.88+00.02.C_53833_0061.4.ps) J1957+2831 (G65.37-00.31.C_53833_0097.2.ps) Note that the first two redetections have almost the same filename, because the filenames of candidate plots at present don't include the beam number (it is printed within the plot itself). We could potentially have two redetections in different beams of the same pointing with the same candidate number, which would amount to them having the same filename. Also--the filename for the .ps single pulse plots doesn't contain the beam number and it isn't printed within the plot either, which makes it hard to indentify which beam the plot came from outside the viewer. This also means the SP plots for the separate beams of each pointing all have the same filename-- not a good idea if the plots are used outside the viewer, copied, emailed, etc. Class 1 cands: 2 new pulsars (above), 2 single pulse cands--one very strong (also tentatively listed as a new pulsar above), the other weak. Class 2 cands: 1 periodic cand that either is spurious or has some short-period RFI superimposed on the pulse profile, 6 weakish single pulse cands, each with a single burst. 09-04-2006 (MJD 53834) ---------------------- Occasional nasty radar, mostly in the beginning of the session. Power was also dropping low during the first few pointings, had to rebalance after each until it stabilized. Redetections: J1901+0355 (G37.66-00.38.C_53834_0039.2.ps.gz) B1914+13 (G47.74+00.45.C_53834_0063.2.ps.gz) Class 1 cands: 1 periodic which could be a harmonic of 60Hz (the period is 832.84ms) Class 2 cands: 5 single pulse cands, 4 with one burst each and 1 with two bursts. 10-04-2006 (MJD 53835) ---------------------- Awful radar during the second half of the session. I'm not sure if it has anything to do with adjusting the auto-attenuation, because again power dropped low and I had to adjust a couple of times. Quicklook: One pointing has only 2 beams processed for some reason, the others must have crashed, though there were no problems with any of the other pointings. Redetections: B1904+06 (G40.65-00.40.C_53835_0046.1.ps.gz) J1909+0912 (G43.08+00.13.C_53835_0052.2.ps.gz) J1913+1000 (G44.39-00.16.C_53835_0055.1.ps.gz) J1913+1011 (G44.39-00.16.C_53835_0055.1.ps.gz) (PALFA) J1946+25 (G61.72+00.13.C_53835_0103.6.ps.gz) Class 2 cands: 2 single pulse, both one one burst. 12-04-2006 (MJD 53837) ---------------------- Redetections: B1900+05 (G39.65+00.23.C_53837_0025.8.ps.gz) B1903+07 (G41.02+00.19.C_53837_0028.2.ps.gz) Class 2 cands: 3 weak single pulse cands with one burst each 14-04-2006 (MJD 53839) ---------------------- Lost some time in the beginning of the session because they had to go take off the ALFA cover (there was a radar run before). Redetections: J1908+0734 (G41.59-00.35.C_53839_0025.11.ps.gz) J1908+0839 (G42.64+00.23.C_53839_0028.1.ps.gz) B1924+16 (G51.75-00.13.C_53839_0052.12.ps.gz) New pulsar: J1916+12 (Beam 1: G47.75+00.13.C_53839_0037.15.ps.gz) P = 227.36ms DM = 254.40 Shows up in single pulse search as well with 3 strong bursts. Class 2 cands: 3 single pulse cands, 1 with 2 weak bursts, 2 with a single burst Reobserved J1948+25 (the 196ms new pulsar from 8-04) and J1938+22 (the RRAT from the same day). The former shows up clearly in both periodicity and single pulse search, the latter didn't show up in the reobservation. Jason suggests to process the two J1948+25 scans to look for binary signature, but the first scan was already copied and shipped to Cornell before I got to look for the raw files, so will process it there.