LOFAR discovery of a quiet emission mode in PSR B0823+26

C. Sobey; N. J. Young; J. W. T. Hessels; P. Weltevrede; A. Noutsos; B. W. Stappers; M. Kramer; C. Bassa; A. G. Lyne; V. I. Kondratiev; T. E. Hassall; E. F. Keane; A. V. Bilous; R. P. Breton; J.-M. Grießmeier; A. Karastergiou; M. Pilia; M. Serylak; S. ter Veen; J. van Leeuwen; A. Alexov; J. Anderson; A. Asgekar; I. M. Avruch; M. E. Bell; M. J. Bentum; G. Bernardi; P. Best; L. Bîrzan; A. Bonafede; F. Breitling; J. Broderick; M. Brüggen; A. Corstanje; D. Carbone; E. de Geus; M. de Vos; A. van Duin; S. Duscha; J. Eislöffel; H. Falcke; R. A. Fallows; R. Fender; C. Ferrari; W. Frieswijk; M. A. Garrett; A. W. Gunst; J. P. Hamaker; G. Heald; M. Hoeft; J. Hörandel; E. Jütte; G. Kuper; P. Maat; G. Mann; S. Markoff; R. McFadden; D. McKay-Bukowski; J. P. McKean; D. D. Mulcahy; H. Munk; A. Nelles; M. J. Norden; E. Orrù; H. Paas; M. Pandey-Pommier; V. N. Pandey; G. Pietka; R. Pizzo; A. G. Polatidis; D. Rafferty; A. Renting; H. Röttgering; A. Rowlinson; A. M. M. Scaife; D. Schwarz; J. Sluman; O. Smirnov; M. Steinmetz; A. Stewart; J. Swinbank; M. Tagger; Y. Tang; C. Tasse; S. Thoudam; C. Toribio; R. Vermeulen; C. Vocks; R. J. van Weeren; R. A. M. J. Wijers; M. W. Wise; O. Wucknitz; S. Yatawatta; P. Zarka

LOFAR discovery of a quiet emission mode in PSR B0823+26

C. Sobey, N. J. Young, J. W. T. Hessels, P. Weltevrede, A. Noutsos, B. W. Stappers, M. Kramer, C. Bassa, A. G. Lyne, V. I. Kondratiev, T. E. Hassall, E. F. Keane, A. V. Bilous, R. P. Breton, J.-M. Grießmeier, A. Karastergiou, M. Pilia, M. Serylak, S. ter Veen, J. van LeeuwenA. Alexov, J. Anderson, A. Asgekar, I. M. Avruch, M. E. Bell, M. J. Bentum, G. Bernardi, P. Best, L. Bîrzan, A. Bonafede, F. Breitling, J. Broderick, M. Brüggen, A. Corstanje, D. Carbone, E. de Geus, M. de Vos, A. van Duin, S. Duscha, J. Eislöffel, H. Falcke, R. A. Fallows, R. Fender, C. Ferrari, W. Frieswijk, M. A. Garrett, A. W. Gunst, J. P. Hamaker, G. Heald, M. Hoeft, J. Hörandel, E. Jütte, G. Kuper, P. Maat, G. Mann, S. Markoff, R. McFadden, D. McKay-Bukowski, J. P. McKean, D. D. Mulcahy, H. Munk, A. Nelles, M. J. Norden, E. Orrù, H. Paas, M. Pandey-Pommier, V. N. Pandey, G. Pietka, R. Pizzo, A. G. Polatidis, D. Rafferty, A. Renting, H. Röttgering, A. Rowlinson, A. M. M. Scaife, D. Schwarz, J. Sluman, O. Smirnov, M. Steinmetz, A. Stewart, J. Swinbank, M. Tagger, Y. Tang, C. Tasse, S. Thoudam, C. Toribio, R. Vermeulen, C. Vocks, R. J. van Weeren, R. A. M. J. Wijers, M. W. Wise, O. Wucknitz, S. Yatawatta, P. Zarka

School of Physics and Astronomy

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

Abstract

PSR B0823+26, a 0.53-s radio pulsar, displays a host of emission phenomena over time-scales of seconds to (at least) hours, including nulling, subpulse drifting, and mode-changing. Studying pulsars like PSR B0823+26 provides further insight into the relationship between these various emission phenomena and what they might teach us about pulsar magnetospheres. Here we report on the LOFAR (Low-Frequency Array) discovery that PSR B0823+26 has a weak and sporadically emitting `quiet' (Q) emission mode that is over 100 times weaker (on average) and has a nulling fraction forty-times greater than that of the more regularly-emitting `bright' (B) mode. Previously, the pulsar has been undetected in the Q mode, and was assumed to be nulling continuously. PSR B0823+26 shows a further decrease in average flux just before the transition into the B mode, and perhaps truly turns off completely at these times. Furthermore, simultaneous observations taken with the LOFAR, Westerbork, Lovell, and Effelsberg telescopes between 110 MHz and 2.7 GHz demonstrate that the transition between the Q mode and B mode occurs within one single rotation of the neutron star, and that it is concurrent across the range of frequencies observed.

Original language	English
Pages (from-to)	2493-2506
Journal	Monthly Notices of the Royal Astronomical Society
Volume	451
Publication status	Published - 1 Aug 2015

Keywords / Materials (for Non-textual outputs)

stars: neutron
pulsars: individual: PSR B0823+26

Access to Document

http://adsabs.harvard.edu/abs/2015MNRAS.451.2493S

Cite this

Sobey, C., Young, N. J., Hessels, J. W. T., Weltevrede, P., Noutsos, A., Stappers, B. W., Kramer, M., Bassa, C., Lyne, A. G., Kondratiev, V. I., Hassall, T. E., Keane, E. F., Bilous, A. V., Breton, R. P., Grießmeier, J.-M., Karastergiou, A., Pilia, M., Serylak, M., Veen, S. T., ... Zarka, P. (2015). LOFAR discovery of a quiet emission mode in PSR B0823+26. Monthly Notices of the Royal Astronomical Society, 451, 2493-2506. http://adsabs.harvard.edu/abs/2015MNRAS.451.2493S

@article{1f14215864da4e1998261e41c00acd56,

title = "LOFAR discovery of a quiet emission mode in PSR B0823+26",

abstract = "PSR B0823+26, a 0.53-s radio pulsar, displays a host of emission phenomena over time-scales of seconds to (at least) hours, including nulling, subpulse drifting, and mode-changing. Studying pulsars like PSR B0823+26 provides further insight into the relationship between these various emission phenomena and what they might teach us about pulsar magnetospheres. Here we report on the LOFAR (Low-Frequency Array) discovery that PSR B0823+26 has a weak and sporadically emitting `quiet' (Q) emission mode that is over 100 times weaker (on average) and has a nulling fraction forty-times greater than that of the more regularly-emitting `bright' (B) mode. Previously, the pulsar has been undetected in the Q mode, and was assumed to be nulling continuously. PSR B0823+26 shows a further decrease in average flux just before the transition into the B mode, and perhaps truly turns off completely at these times. Furthermore, simultaneous observations taken with the LOFAR, Westerbork, Lovell, and Effelsberg telescopes between 110 MHz and 2.7 GHz demonstrate that the transition between the Q mode and B mode occurs within one single rotation of the neutron star, and that it is concurrent across the range of frequencies observed.",

keywords = "stars: neutron, pulsars: individual: PSR B0823+26",

author = "C. Sobey and Young, {N. J.} and Hessels, {J. W. T.} and P. Weltevrede and A. Noutsos and Stappers, {B. W.} and M. Kramer and C. Bassa and Lyne, {A. G.} and Kondratiev, {V. I.} and Hassall, {T. E.} and Keane, {E. F.} and Bilous, {A. V.} and Breton, {R. P.} and J.-M. Grie{\ss}meier and A. Karastergiou and M. Pilia and M. Serylak and Veen, {S. ter} and {van Leeuwen}, J. and A. Alexov and J. Anderson and A. Asgekar and Avruch, {I. M.} and Bell, {M. E.} and Bentum, {M. J.} and G. Bernardi and P. Best and L. B{\^i}rzan and A. Bonafede and F. Breitling and J. Broderick and M. Br{\"u}ggen and A. Corstanje and D. Carbone and {de Geus}, E. and {de Vos}, M. and {van Duin}, A. and S. Duscha and J. Eisl{\"o}ffel and H. Falcke and Fallows, {R. A.} and R. Fender and C. Ferrari and W. Frieswijk and Garrett, {M. A.} and Gunst, {A. W.} and Hamaker, {J. P.} and G. Heald and M. Hoeft and J. H{\"o}randel and E. J{\"u}tte and G. Kuper and P. Maat and G. Mann and S. Markoff and R. McFadden and D. McKay-Bukowski and McKean, {J. P.} and Mulcahy, {D. D.} and H. Munk and A. Nelles and Norden, {M. J.} and E. Orr{\`u} and H. Paas and M. Pandey-Pommier and Pandey, {V. N.} and G. Pietka and R. Pizzo and Polatidis, {A. G.} and D. Rafferty and A. Renting and H. R{\"o}ttgering and A. Rowlinson and Scaife, {A. M. M.} and D. Schwarz and J. Sluman and O. Smirnov and M. Steinmetz and A. Stewart and J. Swinbank and M. Tagger and Y. Tang and C. Tasse and S. Thoudam and C. Toribio and R. Vermeulen and C. Vocks and {van Weeren}, {R. J.} and Wijers, {R. A. M. J.} and Wise, {M. W.} and O. Wucknitz and S. Yatawatta and P. Zarka",

year = "2015",

month = aug,

day = "1",

language = "English",

volume = "451",

pages = "2493--2506",

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

issn = "1365-2966",

publisher = "Oxford University Press",

}

Sobey, C, Young, NJ, Hessels, JWT, Weltevrede, P, Noutsos, A, Stappers, BW, Kramer, M, Bassa, C, Lyne, AG, Kondratiev, VI, Hassall, TE, Keane, EF, Bilous, AV, Breton, RP, Grießmeier, J-M, Karastergiou, A, Pilia, M, Serylak, M, Veen, ST, van Leeuwen, J, Alexov, A, Anderson, J, Asgekar, A, Avruch, IM, Bell, ME, Bentum, MJ, Bernardi, G, Best, P, Bîrzan, L, Bonafede, A, Breitling, F, Broderick, J, Brüggen, M, Corstanje, A, Carbone, D, de Geus, E, de Vos, M, van Duin, A, Duscha, S, Eislöffel, J, Falcke, H, Fallows, RA, Fender, R, Ferrari, C, Frieswijk, W, Garrett, MA, Gunst, AW, Hamaker, JP, Heald, G, Hoeft, M, Hörandel, J, Jütte, E, Kuper, G, Maat, P, Mann, G, Markoff, S, McFadden, R, McKay-Bukowski, D, McKean, JP, Mulcahy, DD, Munk, H, Nelles, A, Norden, MJ, Orrù, E, Paas, H, Pandey-Pommier, M, Pandey, VN, Pietka, G, Pizzo, R, Polatidis, AG, Rafferty, D, Renting, A, Röttgering, H, Rowlinson, A, Scaife, AMM, Schwarz, D, Sluman, J, Smirnov, O, Steinmetz, M, Stewart, A, Swinbank, J, Tagger, M, Tang, Y, Tasse, C, Thoudam, S, Toribio, C, Vermeulen, R, Vocks, C, van Weeren, RJ, Wijers, RAMJ, Wise, MW, Wucknitz, O, Yatawatta, S & Zarka, P 2015, 'LOFAR discovery of a quiet emission mode in PSR B0823+26', Monthly Notices of the Royal Astronomical Society, vol. 451, pp. 2493-2506. <http://adsabs.harvard.edu/abs/2015MNRAS.451.2493S>

TY - JOUR

T1 - LOFAR discovery of a quiet emission mode in PSR B0823+26

AU - Sobey, C.

AU - Young, N. J.

AU - Hessels, J. W. T.

AU - Weltevrede, P.

AU - Noutsos, A.

AU - Stappers, B. W.

AU - Kramer, M.

AU - Bassa, C.

AU - Lyne, A. G.

AU - Kondratiev, V. I.

AU - Hassall, T. E.

AU - Keane, E. F.

AU - Bilous, A. V.

AU - Breton, R. P.

AU - Grießmeier, J.-M.

AU - Karastergiou, A.

AU - Pilia, M.

AU - Serylak, M.

AU - Veen, S. ter

AU - van Leeuwen, J.

AU - Alexov, A.

AU - Anderson, J.

AU - Asgekar, A.

AU - Avruch, I. M.

AU - Bell, M. E.

AU - Bentum, M. J.

AU - Bernardi, G.

AU - Best, P.

AU - Bîrzan, L.

AU - Bonafede, A.

AU - Breitling, F.

AU - Broderick, J.

AU - Brüggen, M.

AU - Corstanje, A.

AU - Carbone, D.

AU - de Geus, E.

AU - de Vos, M.

AU - van Duin, A.

AU - Duscha, S.

AU - Eislöffel, J.

AU - Falcke, H.

AU - Fallows, R. A.

AU - Fender, R.

AU - Ferrari, C.

AU - Frieswijk, W.

AU - Garrett, M. A.

AU - Gunst, A. W.

AU - Hamaker, J. P.

AU - Heald, G.

AU - Hoeft, M.

AU - Hörandel, J.

AU - Jütte, E.

AU - Kuper, G.

AU - Maat, P.

AU - Mann, G.

AU - Markoff, S.

AU - McFadden, R.

AU - McKay-Bukowski, D.

AU - McKean, J. P.

AU - Mulcahy, D. D.

AU - Munk, H.

AU - Nelles, A.

AU - Norden, M. J.

AU - Orrù, E.

AU - Paas, H.

AU - Pandey-Pommier, M.

AU - Pandey, V. N.

AU - Pietka, G.

AU - Pizzo, R.

AU - Polatidis, A. G.

AU - Rafferty, D.

AU - Renting, A.

AU - Röttgering, H.

AU - Rowlinson, A.

AU - Scaife, A. M. M.

AU - Schwarz, D.

AU - Sluman, J.

AU - Smirnov, O.

AU - Steinmetz, M.

AU - Stewart, A.

AU - Swinbank, J.

AU - Tagger, M.

AU - Tang, Y.

AU - Tasse, C.

AU - Thoudam, S.

AU - Toribio, C.

AU - Vermeulen, R.

AU - Vocks, C.

AU - van Weeren, R. J.

AU - Wijers, R. A. M. J.

AU - Wise, M. W.

AU - Wucknitz, O.

AU - Yatawatta, S.

AU - Zarka, P.

PY - 2015/8/1

Y1 - 2015/8/1

N2 - PSR B0823+26, a 0.53-s radio pulsar, displays a host of emission phenomena over time-scales of seconds to (at least) hours, including nulling, subpulse drifting, and mode-changing. Studying pulsars like PSR B0823+26 provides further insight into the relationship between these various emission phenomena and what they might teach us about pulsar magnetospheres. Here we report on the LOFAR (Low-Frequency Array) discovery that PSR B0823+26 has a weak and sporadically emitting `quiet' (Q) emission mode that is over 100 times weaker (on average) and has a nulling fraction forty-times greater than that of the more regularly-emitting `bright' (B) mode. Previously, the pulsar has been undetected in the Q mode, and was assumed to be nulling continuously. PSR B0823+26 shows a further decrease in average flux just before the transition into the B mode, and perhaps truly turns off completely at these times. Furthermore, simultaneous observations taken with the LOFAR, Westerbork, Lovell, and Effelsberg telescopes between 110 MHz and 2.7 GHz demonstrate that the transition between the Q mode and B mode occurs within one single rotation of the neutron star, and that it is concurrent across the range of frequencies observed.

AB - PSR B0823+26, a 0.53-s radio pulsar, displays a host of emission phenomena over time-scales of seconds to (at least) hours, including nulling, subpulse drifting, and mode-changing. Studying pulsars like PSR B0823+26 provides further insight into the relationship between these various emission phenomena and what they might teach us about pulsar magnetospheres. Here we report on the LOFAR (Low-Frequency Array) discovery that PSR B0823+26 has a weak and sporadically emitting `quiet' (Q) emission mode that is over 100 times weaker (on average) and has a nulling fraction forty-times greater than that of the more regularly-emitting `bright' (B) mode. Previously, the pulsar has been undetected in the Q mode, and was assumed to be nulling continuously. PSR B0823+26 shows a further decrease in average flux just before the transition into the B mode, and perhaps truly turns off completely at these times. Furthermore, simultaneous observations taken with the LOFAR, Westerbork, Lovell, and Effelsberg telescopes between 110 MHz and 2.7 GHz demonstrate that the transition between the Q mode and B mode occurs within one single rotation of the neutron star, and that it is concurrent across the range of frequencies observed.

KW - stars: neutron

KW - pulsars: individual: PSR B0823+26

M3 - Article

SN - 1365-2966

VL - 451

SP - 2493

EP - 2506

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

LOFAR discovery of a quiet emission mode in PSR B0823+26

Abstract

Keywords / Materials (for Non-textual outputs)

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