A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107-5907

G. Hobbs; I. Heywood; M. E. Bell; M. Kerr; A. Rowlinson; S. Johnston; R. M. Shannon; M. A. Voronkov; C. Ward; J. Banyer; P. J. Hancock; T. Murphy; J. R. Allison; S. W. Amy; L. Ball; K. Bannister; D. C.-J. Bock; D. Brodrick; M. Brothers; A. J. Brown; J. D. Bunton; J. Chapman; A. P. Chippendale; Y. Chung; D. DeBoer; P. Diamond; P. G. Edwards; R. Ekers; R. H. Ferris; R. Forsyth; R. Gough; A. Grancea; N. Gupta; L. Harvey-Smith; S. Hay; D. B. Hayman; A. W. Hotan; S. Hoyle; B. Humphreys; B. Indermuehle; C. E. Jacka; C. A. Jackson; S. Jackson; K. Jeganathan; J. Joseph; R. Kendall; D. Kiraly; B. Koribalski; M. Leach; E. Lenc; A. MacLeod; S. Mader; M. Marquarding; J. Marvil; N. McClure-Griffiths; D. McConnell; P. Mirtschin; S. Neuhold; A. Ng; R. P. Norris; J. O'Sullivan; S. Pearce; C. J. Phillips; A. Popping; R. Y. Qiao; J. E. Reynolds; P. Roberts; R .J. Sault; A. E. T. Schinckel; P. Serra; R. Shaw; T. W. Shimwell; M. Storey; A. W. Sweetnam; A. Tzioumis; T. Westmeier; M. Whiting; C. D. Wilson

doi:10.1093/mnras/stv2893

A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107-5907

G. Hobbs, I. Heywood, M. E. Bell, M. Kerr, A. Rowlinson, S. Johnston, R. M. Shannon, M. A. Voronkov, C. Ward, J. Banyer, P. J. Hancock, T. Murphy, J. R. Allison, S. W. Amy, L. Ball, K. Bannister, D. C.-J. Bock, D. Brodrick, M. Brothers, A. J. BrownJ. D. Bunton, J. Chapman, A. P. Chippendale, Y. Chung, D. DeBoer, P. Diamond, P. G. Edwards, R. Ekers, R. H. Ferris, R. Forsyth, R. Gough, A. Grancea, N. Gupta, L. Harvey-Smith, S. Hay, D. B. Hayman, A. W. Hotan, S. Hoyle, B. Humphreys, B. Indermuehle, C. E. Jacka, C. A. Jackson, S. Jackson, K. Jeganathan, J. Joseph, R. Kendall, D. Kiraly, B. Koribalski, M. Leach, E. Lenc, A. MacLeod, S. Mader, M. Marquarding, J. Marvil, N. McClure-Griffiths, D. McConnell, P. Mirtschin, S. Neuhold, A. Ng, R. P. Norris, J. O'Sullivan, S. Pearce, C. J. Phillips, A. Popping, R. Y. Qiao, J. E. Reynolds, P. Roberts, R .J. Sault, A. E. T. Schinckel, P. Serra, R. Shaw, T. W. Shimwell, M. Storey, A. W. Sweetnam, A. Tzioumis, T. Westmeier, M. Whiting, C. D. Wilson

Western Sydney University

Research output: Contribution to journal › Article › peer-review

Abstract

We use observations from the Boolardy Engineering Test Array (BETA) of the Australian Square Kilometre Array Pathfinder (ASKAP) telescope to search for transient radio sources in the field around the intermittent pulsar PSR J1107-5907. The pulsar is thought to switch between an 'off' state in which no emission is detectable, a weak state and a strong state. We ran three independent transient detection pipelines on two-minute snapshot images from a 13 h BETA observation in order to (1) study the emission from the pulsar, (2) search for other transient emission from elsewhere in the image and (3) to compare the results from the different transient detection pipelines. The pulsar was easily detected as a transient source and, over the course of the observations, it switched into the strong state three times giving a typical time-scale between the strong emission states of 3.7 h. After the first switch it remained in the strong state for almost 40 min. The other strong states lasted less than 4 min. The second state change was confirmed using observations with the Parkes radio telescope. No other transient events were found and we place constraints on the surface density of such events on these time-scales. The high sensitivity Parkes observations enabled us to detect individual bright pulses during the weak state and to study the strong state over a wide observing band. We conclude by showing that future transient surveys with ASKAP will have the potential to probe the intermittent pulsar population.

Original language	English
Pages (from-to)	3948-3960
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	456
Issue number	4
DOIs	https://doi.org/10.1093/mnras/stv2893
Publication status	Published - 2016

Keywords

pulsars
surveys
telescopes

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10.1093/mnras/stv2893

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Hobbs, G., Heywood, I., Bell, M. E., Kerr, M., Rowlinson, A., Johnston, S., Shannon, R. M., Voronkov, M. A., Ward, C., Banyer, J., Hancock, P. J., Murphy, T., Allison, J. R., Amy, S. W., Ball, L., Bannister, K., Bock, D. C.-J., Brodrick, D., Brothers, M., ... Wilson, C. D. (2016). A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107-5907. Monthly Notices of the Royal Astronomical Society, 456(4), 3948-3960. https://doi.org/10.1093/mnras/stv2893

@article{5e6650d52b7b43018c462ba0195d7441,

title = "A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107-5907",

abstract = "We use observations from the Boolardy Engineering Test Array (BETA) of the Australian Square Kilometre Array Pathfinder (ASKAP) telescope to search for transient radio sources in the field around the intermittent pulsar PSR J1107-5907. The pulsar is thought to switch between an 'off' state in which no emission is detectable, a weak state and a strong state. We ran three independent transient detection pipelines on two-minute snapshot images from a 13 h BETA observation in order to (1) study the emission from the pulsar, (2) search for other transient emission from elsewhere in the image and (3) to compare the results from the different transient detection pipelines. The pulsar was easily detected as a transient source and, over the course of the observations, it switched into the strong state three times giving a typical time-scale between the strong emission states of 3.7 h. After the first switch it remained in the strong state for almost 40 min. The other strong states lasted less than 4 min. The second state change was confirmed using observations with the Parkes radio telescope. No other transient events were found and we place constraints on the surface density of such events on these time-scales. The high sensitivity Parkes observations enabled us to detect individual bright pulses during the weak state and to study the strong state over a wide observing band. We conclude by showing that future transient surveys with ASKAP will have the potential to probe the intermittent pulsar population.",

keywords = "pulsars, surveys, telescopes",

author = "G. Hobbs and I. Heywood and Bell, {M. E.} and M. Kerr and A. Rowlinson and S. Johnston and Shannon, {R. M.} and Voronkov, {M. A.} and C. Ward and J. Banyer and Hancock, {P. J.} and T. Murphy and Allison, {J. R.} and Amy, {S. W.} and L. Ball and K. Bannister and Bock, {D. C.-J.} and D. Brodrick and M. Brothers and Brown, {A. J.} and Bunton, {J. D.} and J. Chapman and Chippendale, {A. P.} and Y. Chung and D. DeBoer and P. Diamond and Edwards, {P. G.} and R. Ekers and Ferris, {R. H.} and R. Forsyth and R. Gough and A. Grancea and N. Gupta and L. Harvey-Smith and S. Hay and Hayman, {D. B.} and Hotan, {A. W.} and S. Hoyle and B. Humphreys and B. Indermuehle and Jacka, {C. E.} and Jackson, {C. A.} and S. Jackson and K. Jeganathan and J. Joseph and R. Kendall and D. Kiraly and B. Koribalski and M. Leach and E. Lenc and A. MacLeod and S. Mader and M. Marquarding and J. Marvil and N. McClure-Griffiths and D. McConnell and P. Mirtschin and S. Neuhold and A. Ng and Norris, {R. P.} and J. O'Sullivan and S. Pearce and Phillips, {C. J.} and A. Popping and Qiao, {R. Y.} and Reynolds, {J. E.} and P. Roberts and Sault, {R .J.} and Schinckel, {A. E. T.} and P. Serra and R. Shaw and Shimwell, {T. W.} and M. Storey and Sweetnam, {A. W.} and A. Tzioumis and T. Westmeier and M. Whiting and Wilson, {C. D.}",

year = "2016",

doi = "10.1093/mnras/stv2893",

language = "English",

volume = "456",

pages = "3948--3960",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

Hobbs, G, Heywood, I, Bell, ME, Kerr, M, Rowlinson, A, Johnston, S, Shannon, RM, Voronkov, MA, Ward, C, Banyer, J, Hancock, PJ, Murphy, T, Allison, JR, Amy, SW, Ball, L, Bannister, K, Bock, DC-J, Brodrick, D, Brothers, M, Brown, AJ, Bunton, JD, Chapman, J, Chippendale, AP, Chung, Y, DeBoer, D, Diamond, P, Edwards, PG, Ekers, R, Ferris, RH, Forsyth, R, Gough, R, Grancea, A, Gupta, N, Harvey-Smith, L, Hay, S, Hayman, DB, Hotan, AW, Hoyle, S, Humphreys, B, Indermuehle, B, Jacka, CE, Jackson, CA, Jackson, S, Jeganathan, K, Joseph, J, Kendall, R, Kiraly, D, Koribalski, B, Leach, M, Lenc, E, MacLeod, A, Mader, S, Marquarding, M, Marvil, J, McClure-Griffiths, N, McConnell, D, Mirtschin, P, Neuhold, S, Ng, A, Norris, RP, O'Sullivan, J, Pearce, S, Phillips, CJ, Popping, A, Qiao, RY, Reynolds, JE, Roberts, P, Sault, RJ, Schinckel, AET, Serra, P, Shaw, R, Shimwell, TW, Storey, M, Sweetnam, AW, Tzioumis, A, Westmeier, T, Whiting, M & Wilson, CD 2016, 'A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107-5907', Monthly Notices of the Royal Astronomical Society, vol. 456, no. 4, pp. 3948-3960. https://doi.org/10.1093/mnras/stv2893

TY - JOUR

T1 - A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107-5907

AU - Hobbs, G.

AU - Heywood, I.

AU - Bell, M. E.

AU - Kerr, M.

AU - Rowlinson, A.

AU - Johnston, S.

AU - Shannon, R. M.

AU - Voronkov, M. A.

AU - Ward, C.

AU - Banyer, J.

AU - Hancock, P. J.

AU - Murphy, T.

AU - Allison, J. R.

AU - Amy, S. W.

AU - Ball, L.

AU - Bannister, K.

AU - Bock, D. C.-J.

AU - Brodrick, D.

AU - Brothers, M.

AU - Brown, A. J.

AU - Bunton, J. D.

AU - Chapman, J.

AU - Chippendale, A. P.

AU - Chung, Y.

AU - DeBoer, D.

AU - Diamond, P.

AU - Edwards, P. G.

AU - Ekers, R.

AU - Ferris, R. H.

AU - Forsyth, R.

AU - Gough, R.

AU - Grancea, A.

AU - Gupta, N.

AU - Harvey-Smith, L.

AU - Hay, S.

AU - Hayman, D. B.

AU - Hotan, A. W.

AU - Hoyle, S.

AU - Humphreys, B.

AU - Indermuehle, B.

AU - Jacka, C. E.

AU - Jackson, C. A.

AU - Jackson, S.

AU - Jeganathan, K.

AU - Joseph, J.

AU - Kendall, R.

AU - Kiraly, D.

AU - Koribalski, B.

AU - Leach, M.

AU - Lenc, E.

AU - MacLeod, A.

AU - Mader, S.

AU - Marquarding, M.

AU - Marvil, J.

AU - McClure-Griffiths, N.

AU - McConnell, D.

AU - Mirtschin, P.

AU - Neuhold, S.

AU - Ng, A.

AU - Norris, R. P.

AU - O'Sullivan, J.

AU - Pearce, S.

AU - Phillips, C. J.

AU - Popping, A.

AU - Qiao, R. Y.

AU - Reynolds, J. E.

AU - Roberts, P.

AU - Sault, R .J.

AU - Schinckel, A. E. T.

AU - Serra, P.

AU - Shaw, R.

AU - Shimwell, T. W.

AU - Storey, M.

AU - Sweetnam, A. W.

AU - Tzioumis, A.

AU - Westmeier, T.

AU - Whiting, M.

AU - Wilson, C. D.

PY - 2016

Y1 - 2016

N2 - We use observations from the Boolardy Engineering Test Array (BETA) of the Australian Square Kilometre Array Pathfinder (ASKAP) telescope to search for transient radio sources in the field around the intermittent pulsar PSR J1107-5907. The pulsar is thought to switch between an 'off' state in which no emission is detectable, a weak state and a strong state. We ran three independent transient detection pipelines on two-minute snapshot images from a 13 h BETA observation in order to (1) study the emission from the pulsar, (2) search for other transient emission from elsewhere in the image and (3) to compare the results from the different transient detection pipelines. The pulsar was easily detected as a transient source and, over the course of the observations, it switched into the strong state three times giving a typical time-scale between the strong emission states of 3.7 h. After the first switch it remained in the strong state for almost 40 min. The other strong states lasted less than 4 min. The second state change was confirmed using observations with the Parkes radio telescope. No other transient events were found and we place constraints on the surface density of such events on these time-scales. The high sensitivity Parkes observations enabled us to detect individual bright pulses during the weak state and to study the strong state over a wide observing band. We conclude by showing that future transient surveys with ASKAP will have the potential to probe the intermittent pulsar population.

AB - We use observations from the Boolardy Engineering Test Array (BETA) of the Australian Square Kilometre Array Pathfinder (ASKAP) telescope to search for transient radio sources in the field around the intermittent pulsar PSR J1107-5907. The pulsar is thought to switch between an 'off' state in which no emission is detectable, a weak state and a strong state. We ran three independent transient detection pipelines on two-minute snapshot images from a 13 h BETA observation in order to (1) study the emission from the pulsar, (2) search for other transient emission from elsewhere in the image and (3) to compare the results from the different transient detection pipelines. The pulsar was easily detected as a transient source and, over the course of the observations, it switched into the strong state three times giving a typical time-scale between the strong emission states of 3.7 h. After the first switch it remained in the strong state for almost 40 min. The other strong states lasted less than 4 min. The second state change was confirmed using observations with the Parkes radio telescope. No other transient events were found and we place constraints on the surface density of such events on these time-scales. The high sensitivity Parkes observations enabled us to detect individual bright pulses during the weak state and to study the strong state over a wide observing band. We conclude by showing that future transient surveys with ASKAP will have the potential to probe the intermittent pulsar population.

KW - pulsars

KW - surveys

KW - telescopes

UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:41593

U2 - 10.1093/mnras/stv2893

DO - 10.1093/mnras/stv2893

M3 - Article

SN - 0035-8711

VL - 456

SP - 3948

EP - 3960

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107-5907

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Keywords

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