2016MNRAS.456.3948H

Query : 2016MNRAS.456.3948H

2016MNRAS.456.3948H - Mon. Not. R. Astron. Soc., 456, 3948-3960 (2016/March-2)

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

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., BROWN A.J., BUNTON J.D., CHAPMAN J., CHIPPENDALE A.P., CHUNG Y., DEBOER D., DIAMOND P., EDWARDS P.G., EKERS R., FERRIS R.H., FORSYTH R., GOUGH R., GRANCEA A., GUPTA N., HARVEY-SMITH L., HAY S., HAYMAN D.B., HOTAN A.W., HOYLE S., HUMPHREYS B., INDERMUEHLE B., JACKA C.E., JACKSON C.A., JACKSON S., JEGANATHAN K., 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 R.P., O'SULLIVAN J., PEARCE S., PHILLIPS C.J., POPPING A., QIAO R.Y., REYNOLDS J.E., ROBERTS P., SAULT R.J., SCHINCKEL A.E.T., SERRA P., SHAW R., SHIMWELL T.W., STOREY M., SWEETNAM A.W., TZIOUMIS A., WESTMEIER T., WHITING M. and WILSON C.D.

Abstract (from CDS):

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.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2016)

Journal keyword(s): pulsars: individual: J1107-5907

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
2 SNR G289.7-00.3 SNR 11 01.2 -60 18           ~ 22 0
3 MGPS J110538-584950 Rad 11 05 38.62 -58 49 50.8           ~ 1 0
4 PSR J1107-5907 Psr 11 07 34.46 -59 07 18.7           ~ 42 0
5 PMN J1112-5947 Rad 11 12 46.4 -59 47 07           ~ 2 1
6 PSR B1713-40 Psr 17 17 52.31000 -41 03 13.0000           ~ 42 0
7 PSR J1832+0029 Psr 18 32 50.7 +00 29 27           ~ 59 0
8 PSR J1933+2421 Psr 19 33 37.83 +24 36 39.6           ~ 157 0
9 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2

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