Details
| Original language | English |
|---|---|
| Pages (from-to) | 688-694 |
| Number of pages | 7 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 433 |
| Issue number | 1 |
| Publication status | Published - Jul 2013 |
Abstract
Modern radio pulsar surveys produce a large volume of prospective candidates, the majorityof which are polluted by human-created radio frequency interference or other forms of noise. Typically, large numbers of candidates need to be visually inspected in order to determineif they are real pulsars. This process can be labour intensive. In this paper, we introducean algorithm called Pulsar Evaluation Algorithm for Candidate Extraction (PEACE) whichimproves the efficiency of identifying pulsar signals. The algorithm ranks the candidates basedon a score function. Unlike popular machine-learning-based algorithms, no prior training datasets are required. This algorithm has been applied to data from several large-scale radiopulsar surveys. Using the human-based ranking results generated by students in the AreciboRemote Command Center programme, the statistical performance of PEACE was evaluated. It was found that PEACE ranked 68 per cent of the student-identified pulsars within the top0.17 per cent of sorted candidates, 95 per cent within the top 0.34 per cent and 100 per centwithin the top 3.7 per cent. This clearly demonstrates that PEACE significantly increases thepulsar identification rate by a factor of about 50 to 1000. To date, PEACE has been directlyresponsible for the discovery of 47 new pulsars, 5 of which are millisecond pulsars that maybe useful for pulsar timing based gravitational-wave detection projects.
Keywords
- Methods:Statistical, pulsars:General.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Astronomy and Astrophysics
- Earth and Planetary Sciences(all)
- Space and Planetary Science
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In: Monthly Notices of the Royal Astronomical Society, Vol. 433, No. 1, 07.2013, p. 688-694.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - PEACE: Pulsar evaluation algorithm for candidate extraction
T2 - a software package for post-analysis processing of pulsar survey candidates
AU - Lee, K. J.
AU - Stovall, K.
AU - Jenet, F. A.
AU - Martinez, J.
AU - Dartez, L. P.
AU - Mata, A.
AU - Lunsford, G.
AU - Cohen, S.
AU - Biwer, C. M.
AU - Rohr, M.
AU - Flanigan, J.
AU - Walker, A.
AU - Banaszak, S.
AU - Allen, B.
AU - Barr, E. D.
AU - Bhat, N. D.R.
AU - Bogdanov, S.
AU - Brazier, A.
AU - Camilo, F.
AU - Champion, D. J.
AU - Chatterjee, S.
AU - Cordes, J.
AU - Crawford, F.
AU - Deneva, J.
AU - Desvignes, G.
AU - Ferdman, R.
AU - Freire, P.
AU - Hessels, J. W.T.
AU - Karuppusamy, R.
AU - Kaspi, V. M.
AU - Knispel, B.
AU - Kramer, M.
AU - Lazarus, P.
AU - Lynch, R.
AU - Lyne, A.
AU - McLaughlin, M.
AU - Ransom, S.
AU - Scholz, P.
AU - Siemens, X.
AU - Spitler, L.
AU - Stairs, I.
AU - Tan, M.
AU - Van Leeuwen, J.
AU - Zhu, W. W.
PY - 2013/7
Y1 - 2013/7
N2 - Modern radio pulsar surveys produce a large volume of prospective candidates, the majorityof which are polluted by human-created radio frequency interference or other forms of noise. Typically, large numbers of candidates need to be visually inspected in order to determineif they are real pulsars. This process can be labour intensive. In this paper, we introducean algorithm called Pulsar Evaluation Algorithm for Candidate Extraction (PEACE) whichimproves the efficiency of identifying pulsar signals. The algorithm ranks the candidates basedon a score function. Unlike popular machine-learning-based algorithms, no prior training datasets are required. This algorithm has been applied to data from several large-scale radiopulsar surveys. Using the human-based ranking results generated by students in the AreciboRemote Command Center programme, the statistical performance of PEACE was evaluated. It was found that PEACE ranked 68 per cent of the student-identified pulsars within the top0.17 per cent of sorted candidates, 95 per cent within the top 0.34 per cent and 100 per centwithin the top 3.7 per cent. This clearly demonstrates that PEACE significantly increases thepulsar identification rate by a factor of about 50 to 1000. To date, PEACE has been directlyresponsible for the discovery of 47 new pulsars, 5 of which are millisecond pulsars that maybe useful for pulsar timing based gravitational-wave detection projects.
AB - Modern radio pulsar surveys produce a large volume of prospective candidates, the majorityof which are polluted by human-created radio frequency interference or other forms of noise. Typically, large numbers of candidates need to be visually inspected in order to determineif they are real pulsars. This process can be labour intensive. In this paper, we introducean algorithm called Pulsar Evaluation Algorithm for Candidate Extraction (PEACE) whichimproves the efficiency of identifying pulsar signals. The algorithm ranks the candidates basedon a score function. Unlike popular machine-learning-based algorithms, no prior training datasets are required. This algorithm has been applied to data from several large-scale radiopulsar surveys. Using the human-based ranking results generated by students in the AreciboRemote Command Center programme, the statistical performance of PEACE was evaluated. It was found that PEACE ranked 68 per cent of the student-identified pulsars within the top0.17 per cent of sorted candidates, 95 per cent within the top 0.34 per cent and 100 per centwithin the top 3.7 per cent. This clearly demonstrates that PEACE significantly increases thepulsar identification rate by a factor of about 50 to 1000. To date, PEACE has been directlyresponsible for the discovery of 47 new pulsars, 5 of which are millisecond pulsars that maybe useful for pulsar timing based gravitational-wave detection projects.
KW - Methods:Statistical
KW - pulsars:General.
UR - http://www.scopus.com/inward/record.url?scp=84880407488&partnerID=8YFLogxK
U2 - 10.1093/mnras/stt758
DO - 10.1093/mnras/stt758
M3 - Article
AN - SCOPUS:84880407488
VL - 433
SP - 688
EP - 694
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 1
ER -