LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole

Stewart AJ, Fender RP, Broderick JW, Hassall TE, Munoz-Darias T, Rowlinson A, Swinbank JD, Staley TD, Molenaar GJ, Scheers B, Grobler TL, et al. (2016)
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456(3): 2321-2342.

Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Zeitschriftenaufsatz | Veröffentlicht | Englisch
Autor
; ; ; ; ; ; ; ; ; ; ;
Alle
Abstract / Bemerkung
We present the results of a four-month campaign searching for low-frequency radio transients near the North Celestial Pole with the Low-Frequency Array (LOFAR), as part of the Multifrequency Snapshot Sky Survey (MSSS). The data were recorded between 2011 December and 2012 April and comprised 2149 11-min snapshots, each covering 175 deg(2). We have found one convincing candidate astrophysical transient, with a duration of a few minutes and a flux density at 60 MHz of 15-25 Jy. The transient does not repeat and has no obvious optical or high-energy counterpart, as a result of which its nature is unclear. The detection of this event implies a transient rate at 60 MHz of 3.9(-3.7)(+14.7) x 10(-4) d(-1) deg(-2), and a transient surface density of 1.5 x 10(-5) deg(-2), at a 7.9-Jy limiting flux density and similar to 10-min time-scale. The campaign data were also searched for transients at a range of other time-scales, from 0.5 to 297 min, which allowed us to place a range of limits on transient rates at 60MHz as a function of observation duration.
Erscheinungsjahr
Zeitschriftentitel
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Band
456
Ausgabe
3
Seite(n)
2321-2342
ISSN
eISSN
PUB-ID

Zitieren

Stewart AJ, Fender RP, Broderick JW, et al. LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2016;456(3):2321-2342.
Stewart, A. J., Fender, R. P., Broderick, J. W., Hassall, T. E., Munoz-Darias, T., Rowlinson, A., Swinbank, J. D., et al. (2016). LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456(3), 2321-2342. doi:10.1093/mnras/stv2797
Stewart, A. J., Fender, R. P., Broderick, J. W., Hassall, T. E., Munoz-Darias, T., Rowlinson, A., Swinbank, J. D., Staley, T. D., Molenaar, G. J., Scheers, B., et al. (2016). LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456, 2321-2342.
Stewart, A.J., et al., 2016. LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456(3), p 2321-2342.
A.J. Stewart, et al., “LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole”, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 456, 2016, pp. 2321-2342.
Stewart, A.J., Fender, R.P., Broderick, J.W., Hassall, T.E., Munoz-Darias, T., Rowlinson, A., Swinbank, J.D., Staley, T.D., Molenaar, G.J., Scheers, B., Grobler, T.L., Pietka, M., Heald, G., McKean, J.P., Bell, M.E., Bonafede, A., Breton, R.P., Carbone, D., Cendes, Y., Clarke, A.O., Corbel, S., de Gasperin, F., Eisloeffel, J., Falcke, H., Ferrari, C., Griemeier, J.-M., Hardcastle, M.J., Heesen, V., Hessels, J.W.T., Horneffer, A., Iacobelli, M., Jonker, P., Karastergiou, A., Kokotanekov, G., Kondratiev, V.I., Kuniyoshi, M., Law, C.J., van Leeuwen, J., Markoff, S., Miller-Jones, J.C.A., Mulcahy, D., Orru, E., Pandey-Pommier, M., Pratley, L., Rol, E., Rottgering, H.J.A., Scaife, A.M.M., Shulevski, A., Sobey, C.A., Stappers, B.W., Tasse, C., van der Horst, A.J., van Velzen, S., van Weeren, R.J., Wijers, R.A.M.J., Wijnands, R., Wise, M., Zarka, P., Alexov, A., Anderson, J., Asgekar, A., Avruch, I.M., Bentum, M.J., Bernardi, G., Best, P., Breitling, F., Bruggen, M., Butcher, H.R., Ciardi, B., Conway, J.E., Corstanje, A., de Geus, E., Deller, A., Duscha, S., Frieswijk, W., Garrett, M.A., Gunst, A.W., van Haarlem, M.P., Hoeft, M., Horandel, J., Juette, E., Kuper, G., Loose, M., Maat, P., McFadden, R., McKay-Bukowski, D., Moldon, J., Munk, H., Norden, M.J., Paas, H., Polatidis, A.G., Schwarz, D., Sluman, J., Smirnov, O., Steinmetz, M., Thoudam, S., Toribio, M.C., Vermeulen, R., Vocks, C., Wijnholds, S.J., Wucknitz, O., Yatawatta, S.: LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 456, 2321-2342 (2016).
Stewart, A. J., Fender, R. P., Broderick, J. W., Hassall, T. E., Munoz-Darias, T., Rowlinson, A., Swinbank, J. D., Staley, T. D., Molenaar, G. J., Scheers, B., Grobler, T. L., Pietka, M., Heald, G., McKean, J. P., Bell, M. E., Bonafede, A., Breton, R. P., Carbone, D., Cendes, Y., Clarke, A. O., Corbel, S., de Gasperin, F., Eisloeffel, J., Falcke, H., Ferrari, C., Griemeier, J. -M., Hardcastle, M. J., Heesen, V., Hessels, J. W. T., Horneffer, A., Iacobelli, M., Jonker, P., Karastergiou, A., Kokotanekov, G., Kondratiev, V. I., Kuniyoshi, M., Law, C. J., van Leeuwen, J., Markoff, S., Miller-Jones, J. C. A., Mulcahy, D., Orru, E., Pandey-Pommier, M., Pratley, L., Rol, E., Rottgering, H. J. A., Scaife, A. M. M., Shulevski, A., Sobey, C. A., Stappers, B. W., Tasse, C., van der Horst, A. J., van Velzen, S., van Weeren, R. J., Wijers, R. A. M. J., Wijnands, R., Wise, M., Zarka, P., Alexov, A., Anderson, J., Asgekar, A., Avruch, I. M., Bentum, M. J., Bernardi, G., Best, P., Breitling, F., Bruggen, M., Butcher, H. R., Ciardi, B., Conway, J. E., Corstanje, A., de Geus, E., Deller, A., Duscha, S., Frieswijk, W., Garrett, M. A., Gunst, A. W., van Haarlem, M. P., Hoeft, M., Horandel, J., Juette, E., Kuper, G., Loose, M., Maat, P., McFadden, R., McKay-Bukowski, D., Moldon, J., Munk, H., Norden, M. J., Paas, H., Polatidis, A. G., Schwarz, Dominik, Sluman, J., Smirnov, O., Steinmetz, M., Thoudam, S., Toribio, M. C., Vermeulen, R., Vocks, C., Wijnholds, S. J., Wucknitz, O., and Yatawatta, S. “LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole”. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456.3 (2016): 2321-2342.