We are searching the bulge of the Andromeda Galaxy (M31) for radio pulsars and fast transients with the Five-hundred-meter Aperture Spherical Telescope (FAST). The maximum expected Galactic contribution to the DM along the M31 line of sight is 68 (NE2001 model) and 61 (YMW16 model) pc cm-3. This research has used the Franklin and Marshall College compute cluster which was funded through NSF grant 1925192.
Project Participants
Data Files and Results
Below: Image of M31 with the center beam of FAST at L-band indicated
by the circle.
Source: PSR B0136+57 (P=272.49 ms, DM=73.8)
Obs Date: 20211207 (MJD 59555)
FITS Files: B0136+57_tracking-M01_[0001,0139].fits
FIL File: B0136+57_tracking-M01_20211207.fil
Obs Length: 1781 sec
Processing Results:
* RFI: mask plot
* prepfold direct fold: B0136+57 detection (sigma=9400)
* presto perodicity search (no acceleration, DM_max 2000): B0136+57 detection (sigma=7755)
* presto perodicity search (zmax 1200, DM_max 2000): B0136+57 detection (sigma=9546)
* presto single pulse search (DM vs time, 20 sec window, DM_max 2000): B0136+57 detection
* heimdall/fetch single pulse search (max boxcar 512, DM_max 10000): B0136+57 detection (there were 2394 pulses with p > 90%)
* heimdall/fetch long single pulse search (decimate -t 512, max boxcar = 512, DM_max 10000): no candidates
* riptide FFA search (DM_max 2000, 1 to 30 sec): B0136+57 detection (4th harmonic, S/N=1430)
Source: PSR B0136+57 (P=272.49 ms, DM=73.8)
Obs Date: 20211216 (MJD 59564)
FITS Files: B0136+57_tracking-M01_[0001,0139].fits
FIL File: B0136+57_tracking-M01_20211216.fil
Obs Length: 1781 s
Processing Results:
* RFI: mask plot
* prepfold direct fold: B0136+57 detection (sigma=6821)
* presto perodicity search (no acceleration, DM_max 2000): B0136+57 detection (sigma=5773)
* presto perodicity search (zmax 1200, DM_max 2000): B0136+57 detection (sigma=5630)
* presto single pulse search (DM vs time, 20 sec window, DM_max 2000): B0136+57 detection
* heimdall/fetch single pulse search (max boxcar 512, DM_max 10000): B0136+57 detection (there were 3496 pulses with p > 90%)
* heimdall/fetch long single pulse search (decimate -t 512, max boxcar = 512, DM_max 10000): no candidates
* riptide FFA search (DM_max 2000, 1 to 30 sec): B0136+57 detection (4th harmonic, S/N=1307)
Source: M31
Obs Date: 20211207 (MJD 59555)
FITS Files: M31_snapshot-M01_[0001,0607].fits
FIL File: M31_snapshot-M01_20211207.fil
Obs Length: 7821 s
Processing Results:
* RFI: mask plot
* presto perodicity search (no acceleration, DM_max 2000): no candidates above prepfold sigma 5.0
* presto perodicity search (zmax 1200, DM_max 2000): 9 candidates above prepfold sigma 5.0
* presto chunk processing (zmax 1200, DM_max 2000, prep sigma above 6, min chunk of 600 s): no candidates
* presto single pulse search (plots in 900 sec windows, DM_max 2000): no good candidates above S/N 6.0
* heimdall/fetch single pulse search (max boxcar 512, DM_max 10000): 1 candidate above S/N 7.0 (DM=70, S/N=7.2, p=0.99977976)
* heimdall/fetch long single pulse search (decimate -t 512, max boxcar = 512, DM_max 10000): no candidates
* riptide FFA search (DM_max 2000, 1 to 30 sec): no convincing candidates above S/N 7.0
Source: M31
Obs Date: 20211216 (MJD 59564)
FITS Files: M31_snapshot-M01_[0001,0607].fits
FIL File: M31_snapshot-M01_20211216.fil
Obs Length: 7821 s
Processing Results:
* RFI: mask plot
* presto perodicity search (no acceleration, DM_max 2000): no candidates above prepfold sigma 5.0
* presto perodicity search (zmax 1200, DM_max 2000): 1 candidate above prepfold sigma 5.0
* presto chunk processing (zmax 1200, DM_max 2000, prep sigma above 6, min chunk of 600 s): no candidates
* presto single pulse search (plots in 900 sec windows, DM_max 2000): no good candidates above S/N 6.0
* heimdall/fetch single pulse search (max boxcar 512, DM_max 10000): no candidates above S/N 7.0
* heimdall/fetch long single pulse search (decimate -t 512, max boxcar = 512, DM_max 10000): no candidates
* riptide FFA search (DM_max 2000, 1 to 30 sec): no convincing candidates above S/N 7.0