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

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C. Sobey , Neil J. Young , J. W. T. Hessels , P. Weltevrede , A. Noutsos , B. W. Stappers , M. Krämer , 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. M. Anderson , A. Asgekar , I. M. Avruch , M. E. Bell , Marinus Jan Bentum , G. Bernardi , P. N. Best , L. Bırzan , A. Bonafede , F. Breitling , J. W. 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. P. Fender , C. Ferrari , W. Frieswijk , M. A. Garrett , A. W. Gunst , J. P. Hamaker , G. Heald , M. Hoeft , J.R. Hörandel , E. Jütte , G. Küper , P. Maat , G. Mann , Sera Markoff , R. McFadden , D. McKay‐Bukowski , J. P. McKean , D. D. Mulcahy , H. Munk , A. Nelles , M. J. Norden , E. Orrú , H. Paas , M. Pandey-Pommier , V. N. Pandey , G. Pietka , R. Pizzo , A. G. Polatidis , D. A. Rafferty , A. Renting , H. J. A. Röttgering , A. Rowlinson , A. Scaife , D. Schwarz , J. Sluman , O. Smirnov , Matthias Steinmetz , A. Stewart , J. Swinbank , M. Tagger , Y. Tang , C. Tasse , S. Thoudam , M. C. Toribio , R. C. Vermeulen , C. Vocks , R. J. van Weeren , R. A. M. J. Wijers , M. W. Wise , O. Wucknitz , S. Yatawatta , P. Zarka ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.25916/sut.26217617

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.

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LOFAR Pulsar Physics Astrophysics Neutron star Mode (computer interface) QUIET Radio telescope Astronomy Flux (metallurgy) Rotation (mathematics) Operating system Computer science Geometry Metallurgy Mathematics Materials science

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/1505.03064
PDF: https://arxiv.org/pdf/1505.03064
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DOI: https://doi.org/10.25916/sut.26217617

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

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Language: en

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Publication year: 2024

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Authors: C. Sobey, Neil J. Young, J. W. T. Hessels, P. Weltevrede, A. Noutsos, B. W. Stappers, M. Krämer, 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. M. Anderson, A. Asgekar, I. M. Avruch, M. E. Bell, Marinus Jan Bentum, G. Bernardi, P. N. Best, L. Bırzan, A. Bonafede, F. Breitling, J. W. 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. P. Fender, C. Ferrari, W. Frieswijk, M. A. Garrett, A. W. Gunst, J. P. Hamaker, G. Heald, M. Hoeft, J.R. Hörandel, E. Jütte, G. Küper, P. Maat, G. Mann, Sera Markoff, R. McFadden, D. McKay‐Bukowski, J. P. McKean, D. D. Mulcahy, H. Munk, A. Nelles, M. J. Norden, E. Orrú, H. Paas, M. Pandey-Pommier, V. N. Pandey, G. Pietka, R. Pizzo, A. G. Polatidis, D. A. Rafferty, A. Renting, H. J. A. Röttgering, A. Rowlinson, A. Scaife, D. Schwarz, J. Sluman, O. Smirnov, Matthias Steinmetz, A. Stewart, J. Swinbank, M. Tagger, Y. Tang, C. Tasse, S. Thoudam, M. C. Toribio, R. C. Vermeulen, C. Vocks, R. J. van Weeren, R. A. M. J. Wijers, M. W. Wise, O. Wucknitz, S. Yatawatta, P. Zarka

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Concepts: LOFAR, Pulsar, Physics, Astrophysics, Neutron star, Mode (computer interface), QUIET, Radio telescope, Astronomy, Flux (metallurgy), Rotation (mathematics), Operating system, Computer science, Geometry, Metallurgy, Mathematics, Materials science

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abstract_inverted_index.pulsar	49, 99
abstract_inverted_index.report	53
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abstract_inverted_index.times.	139
abstract_inverted_index.weaker	78
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abstract_inverted_index.neutron	176
abstract_inverted_index.nulling	84, 112
abstract_inverted_index.perhaps	132
abstract_inverted_index.pulsar,	5
abstract_inverted_index.pulsars	27
abstract_inverted_index.seconds	15
abstract_inverted_index.various	39
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abstract_inverted_index.B0823+26	30, 62, 115
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abstract_inverted_index.average)	80
abstract_inverted_index.decrease	119
abstract_inverted_index.displays	6
abstract_inverted_index.emission	10, 40, 71
abstract_inverted_index.emitting	68
abstract_inverted_index.fraction	85
abstract_inverted_index.nulling,	21
abstract_inverted_index.provides	31
abstract_inverted_index.rotation	173
abstract_inverted_index.subpulse	22
abstract_inverted_index.B0823+26,	1
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abstract_inverted_index.drifting,	23
abstract_inverted_index.including	20
abstract_inverted_index.observed.	188
abstract_inverted_index.phenomena	11, 41
abstract_inverted_index.Effelsberg	150
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abstract_inverted_index.concurrent	182
abstract_inverted_index.telescopes	151
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abstract_inverted_index.Westerbork,	147
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abstract_inverted_index.forty-times	86
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abstract_inverted_index.simultaneous	141
abstract_inverted_index.sporadically	67
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abstract_inverted_index.mode-changing.	25
abstract_inverted_index.magnetospheres.	50
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cited_by_percentile_year
countries_distinct_count	8
institutions_distinct_count	94
citation_normalized_percentile.value	0.00106942
citation_normalized_percentile.is_in_top_1_percent	False
citation_normalized_percentile.is_in_top_10_percent	False