Skip to main content

A Census of Southern Pulsars at 185 MHz

  • Mengyao Xue (a1) (a2), N. D. R. Bhat (a1) (a2), S. E. Tremblay (a1) (a2), S. M. Ord (a3), C. Sobey (a1) (a4), N. A. Swainston (a1) (a2), D. L. Kaplan (a5), Simon Johnston (a3), B. W. Meyers (a1) (a2) (a3) and S. J. McSweeney (a1) (a2)...

The Murchison Widefield Array, and its recently developed Voltage Capture System, facilitates extending the low-frequency range of pulsar observations at high-time and -frequency resolution in the Southern Hemisphere, providing further information about pulsars and the ISM. We present the results of an initial time-resolved census of known pulsars using the Murchison Widefield Array. To significantly reduce the processing load, we incoherently sum the detected powers from the 128 Murchison Widefield Array tiles, which yields ~10% of the attainable sensitivity of the coherent sum. This preserves the large field-of-view (~450 deg2 at 185 MHz), allowing multiple pulsars to be observed simultaneously. We developed a WIde-field Pulsar Pipeline that processes the data from each observation and automatically folds every known pulsar located within the beam. We have detected 50 pulsars to date, 6 of which are millisecond pulsars. This is consistent with our expectation, given the telescope sensitivity and the sky coverage of the processed data (~17 000 deg2). For 10 pulsars, we present the lowest frequency detections published. For a subset of the pulsars, we present multi-frequency pulse profiles by combining our data with published profiles from other telescopes. Since the Murchison Widefield Array is a low-frequency precursor to the Square Kilometre Array, we use our census results to forecast that a survey using the low-frequency component of the Square Kilometre Array Phase 1 can potentially detect around 9 400 pulsars.

Corresponding author
6 Email:
Hide All
Bates S. D., Lorimer D. R., Rane A., & Swiggum J. 2014, MNRAS, 439, 2893 10.1093/mnras/stu157 2014MNRAS.439.2893B
Bates S. D., Lorimer D. R., & Verbiest J. P. W. 2013, MNRAS, 431, 1352 10.1093/mnras/stt257 2013MNRAS.431.1352B
Bhat N. D. R., Bailes M., & Verbiest J. P. W. 2008, PhRvD, 77, 124017 10.1103/PhysRevD.77.124017 2008PhRvD..77l4017B
Bhat N. D. R., Cordes J. M., Camilo F., Nice D. J., & Lorimer D. R. 2004, ApJ, 605, 759 10.1086/382680 2004ApJ...605..759B
Bhat N. D. R., Ord S. M., Tremblay S. E., McSweeney S. J., & Tingay S. J. 2016, ApJ, 818, 86 10.3847/0004-637X/818/1/86 2016ApJ...818...86B
Bhat N. D. R., Rao A. P., & Gupta Y. 1999, ApJS, 121, 483 10.1086/313198 1999ApJS..121..483B
Bhat N. D. R., et al. 2014, ApJ, 791, L32 10.1088/2041-8205/791/2/L32 2014ApJ...791L..32B
Bilous A. V., et al. 2016, A&A, 591, A134 10.1051/0004-6361/201527702 2016A&A...591A.134B
Condon J. J. 1974, ApJ, 188, 279 10.1086/152714 1974ApJ...188..279C
Cordes J. M. 1978, ApJ, 222, 1006 10.1086/156218 1978ApJ...222.1006C
Cordes J. M., & Lazio T. J. W. 2002, arXiv:astro-ph/
Dolch T., et al. 2014, ApJ, 794, 21 10.1088/0004-637X/794/1/21 2014ApJ...794...21D
Franzen T. M. O., et al. 2016, MNRAS, 459, 3314 10.1093/mnras/stw823 2016MNRAS.459.3314F
Gould D. M., & Lyne A. G. 1998, MNRAS, 301, 235 10.1046/j.1365-8711.1998.02018.x 1998MNRAS.301..235G
Gupta Y., Rickett B. J., & Coles W. A. 1993, ApJ, 403, 183 10.1086/172193 1993ApJ...403..183G
Haslam C. G. T., Klein U., Salter C. J., Stoffel H., Wilson W. E., Cleary M. N., Cooke D. J., & Thomasson P. 1981, A&A, 100, 209 1981A&A...100..209H
Haslam C. G. T., Salter C. J., Stoffel H., & Wilson W. E. 1982, A&AS, 47, 1 1982A&AS...47....1H
Hassall T. E., et al. 2012, A&A, 543, A66 10.1051/0004-6361/201218970 2012A&A...543A..66H
Hermsen W., et al. 2013, Science, 339, 436 10.1126/science.1230960 2013Sci...339..436H
Hewish A., Bell S. J., Pilkington J. D. H., Scott P. F., & Collins R. A. 1968, Nature, 217, 709 10.1038/217709a0 1968Natur.217..709H
Hobbs G., Lyne A. G., Kramer M., Martin C. E., & Jordan C. 2004, MNRAS, 353, 1311 10.1111/j.1365-2966.2004.08157.x 2004MNRAS.353.1311H
Hotan A. W., van Straten W., & Manchester R. N. 2004, PASA, 21, 302 10.1071/AS04022 2004PASA...21..302H
Howard T. A., Stovall K., Dowell J., Taylor G. B., & White S. M. 2016, ApJ, 831, 208 10.3847/0004-637X/831/2/208 2016ApJ...831..208H
Johnston S., Karastergiou A., Mitra D., & Gupta Y. 2008, MNRAS, 388, 261 10.1111/j.1365-2966.2008.13379.x 2008MNRAS.388..261J
Johnston S., & Kerr M. 2017, MNRAS, accepted, arXiv: 1711.10092
Kaspi V. M., et al. 2000, ApJ, 543, 321 10.1086/317103 2000ApJ...543..321K
Keane E., et al. 2015, in Advancing Astrophysics with the Square Kilometre Array (AASKA14) (held in Giardini Naxos, 9–13 June 2014), 402015aska.confE..40K
Keith M. J., et al. 2011, MNRAS, 414, 1292 10.1111/j.1365-2966.2011.18464.x 2011MNRAS.414.1292K
Kerr M., et al. 2012, ApJ, 748, L2 10.1088/2041-8205/748/1/L2 2012ApJ...748L...2K
Kijak J., & Gil J. 1998, MNRAS, 299, 855 10.1046/j.1365-8711.1998.01832.x 1998MNRAS.299..855K
Kijak J., & Gil J. 2003, A&A, 397, 969 10.1051/0004-6361:20021583 2003A&A...397..969K
Kijak J., Kramer M., Wielebinski R., & Jessner A. 1998, A&AS, 127, 153 10.1051/aas:1998340 1998A&AS..127..153K
Kondratiev V. I., et al. 2016a, A&A, 585, A128 10.1051/0004-6361/201527178 2016A&A...585A.128K
Kondratiev V. I., et al. 2016b, A&A, 585, A128 10.1051/0004-6361/201527178 2016A&A...585A.128K
Kuz’min A. D., & Losovskii B. Y. 1999, ARep, 43, 288 1999ARep...43..288K
Lawson K. D., Mayer C. J., Osborne J. L., & Parkinson M. L. 1987, MNRAS, 225, 307 10.1093/mnras/225.2.307 1987MNRAS.225..307L
Lorimer D., & Kramer M. 2005, Handbook of Pulsar Astronomy. Cambridge Observing Handbooks for Research Astronomers (Cambridge: Cambridge University Press)
Manchester R. N., Hobbs G. B., Teoh A., & Hobbs M. 2005, AJ, 129, 1993 10.1086/428488 2005AJ....129.1993M
Manchester R. N., et al. 2013, PASA, 30, e017 10.1017/pasa.2012.017 2013PASA...30...17M
Maron O., Kijak J., Kramer M., & Wielebinski R. 2000, A&AS, 147, 195 10.1051/aas:2000298 2000A&AS..147..195M
Mereghetti S., et al. 2016, ApJ, 831, 21 10.3847/0004-637X/831/1/21 2016ApJ...831...21M
Meyers B. W., et al. 2017, ApJ, 851, 20
Mitra D., & Rankin J. M. 2002, ApJ, 577, 322 10.1086/342136 2002ApJ...577..322M
Murphy T., et al. 2017, PASA, 34, e020 10.1017/pasa.2017.13 2017PASA...34...20M
Noutsos A., et al. 2015, A&A, 576, A62 10.1051/0004-6361/201425186 2015A&A...576A..62N
Offringa A. R., et al. 2015, PASA, 32, e008 10.1017/pasa.2015.7 2015PASA...32....8O
Oronsaye S. I., et al. 2015, ApJ, 809, 51 10.1088/0004-637X/809/1/51 2015ApJ...809...51O
Pilia M., et al. 2016, A&A, 586, A92 10.1051/0004-6361/201425196 2016A&A...586A..92P
Prabu T., et al. 2015, ExA, 39, 73 10.1007/s10686-015-9444-3 2015ExA....39...73P
Ransom S. M. 2001, PhD thesis, Harvard University
Roy J., Gupta Y., Pen U.-L., Peterson J. B., Kudale S., & Kodilkar J. 2010, ExA, 28, 25 10.1007/s10686-010-9187-0 2010ExA....28...25R
Sokolowski M., Wayth R. B., & Lewis M. 2017, PASA, 34, 62
Stappers B. W., et al. 2011, A&A, 530, A80 10.1051/0004-6361/201116681 2011A&A...530A..80S
Stovall K., et al. 2015, ApJ, 808, 156 10.1088/0004-637X/808/2/156 2015ApJ...808..156S
Sutinjo A., O’Sullivan J., Lenc E., Wayth R. B., Padhi S., Hall P., & Tingay S. J. 2015, RaSc, 50, 52 10.1002/2014RS005517 2015RaSc...50...52S
Swarup G., Ananthakrishnan S., Kapahi V. K., Rao A. P., Subrahmanya C. R., & Kulkarni V. K. 1991, Current Science, 60, 95 1991CuSc...60...95S
Taylor J. H., & Manchester R. N. 1977, ARA&A, 15, 19 10.1146/annurev.aa.15.090177.000315 1977ARA&A..15...19T
Taylor J. H., & Stinebring D. R. 1986, ARA&A, 24, 285 10.1146/annurev.aa.24.090186.001441 1986ARA&A..24..285T
Taylor G. B., et al. 2012, JAI, 1, 1250004 10.1142/S2251171712500043 2012JAI.....150004T
Thornton D., et al. 2013, Science, 341, 53 10.1126/science.1236789 2013Sci...341...53T
Thorsett S. E. 1991, ApJ, 377, 263 10.1086/170355 1991ApJ...377..263T
Tingay S. J., et al. 2013, PASA, 30, e007 10.1017/pasa.2012.007 2013PASA...30....7T
Tremblay S. E., et al. 2015, PASA, 32, e005 10.1017/pasa.2015.6 2015PASA...32....5T
van Haarlem M. P., et al. 2013, A&A, 556, A2 10.1051/0004-6361/201220873 2013A&A...556A...2V
von Hoensbroech A., Kijak J., & Krawczyk A. 1998, A&A, 334, 571 1998A&A...334..571V
Xilouris K. M., Kramer M., Jessner A., Wielebinski R., & Timofeev M. 1996, A&A, 309, 481 1996A&A...309..481X
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Publications of the Astronomical Society of Australia
  • ISSN: 1323-3580
  • EISSN: 1448-6083
  • URL: /core/journals/publications-of-the-astronomical-society-of-australia
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 1
Total number of PDF views: 23 *
Loading metrics...

Abstract views

Total abstract views: 62 *
Loading metrics...

* Views captured on Cambridge Core between 20th December 2017 - 19th January 2018. This data will be updated every 24 hours.