Flares from a candidate Galactic magnetar suggest a missing link to dim isolated neutron stars

Castro-Tirado, A. J.; de Ugarte Postigo, A.; Gorosabel, J.; Jelínek, M.; Fatkhullin, T. A.; Sokolov, V. V.; Ferrero, P.; Kann, D. A.; Klose, S.; Sluse, D.; Bremer, M.; Winters, J. M.; Nuernberger, D.; Pérez-Ramírez, D.; Guerrero, M. A.; French, J.; Melady, G.; Hanlon, L.; McBreen, B.; Leventis, K.; Markoff, S. B.; Leon, S.; Kraus, A.; Aceituno, F. J.; Cunniffe, R.; Kubánek, P.; Vítek, S.; Schulze, S.; Wilson, A. C.; Hudec, R.; Durant, M.; González-Pérez, J. M.; Shahbaz, T.; Guziy, S.; Pandey, S. B.; Pavlenko, L.; Sonbas, E.; Trushkin, S. A.; Bursov, N. N.; Nizhelskij, N. A.; Sánchez-Fernández, C.; Sabau-Graziati, L.

Flares from a candidate Galactic magnetar suggest a missing link to dim isolated neutron stars

A. J. Castro-Tirado (), A. de Ugarte Postigo, J. Gorosabel, M. Jelínek, T. A. Fatkhullin, V. V. Sokolov, P. Ferrero, D. A. Kann, S. Klose, D. Sluse, M. Bremer, J. M. Winters, D. Nuernberger, D. Pérez-Ramírez, M. A. Guerrero, J. French, G. Melady, L. Hanlon, B. McBreen, K. Leventis, S. B. Markoff, S. Leon, A. Kraus, F. J. Aceituno, R. Cunniffe, P. Kubánek, S. Vítek, S. Schulze, A. C. Wilson, R. Hudec, M. Durant, J. M. González-Pérez, T. Shahbaz, S. Guziy, S. B. Pandey, L. Pavlenko, E. Sonbas, S. A. Trushkin, N. N. Bursov, N. A. Nizhelskij, C. Sánchez-Fernández and L. Sabau-Graziati
Additional contact information
A. J. Castro-Tirado: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
A. de Ugarte Postigo: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
J. Gorosabel: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
M. Jelínek: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
T. A. Fatkhullin: Special Astrophysical Observatory of Russian Academy of Science (SAO-RAS), Nizhnij Arkhyz, Karachai-Cherkessia, 369167 Russia
V. V. Sokolov: Special Astrophysical Observatory of Russian Academy of Science (SAO-RAS), Nizhnij Arkhyz, Karachai-Cherkessia, 369167 Russia
P. Ferrero: Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany
D. A. Kann: Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany
S. Klose: Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany
D. Sluse: Laboratoire d'Astrophysique, École Polytechnique Fédérale de Lausanne (EPFL) Observatoire
M. Bremer: Institute de Radioastronomie Millimétrique (IRAM), 300 rue de la Piscine, 38406 Saint Martin d'Héres, France
J. M. Winters: Institute de Radioastronomie Millimétrique (IRAM), 300 rue de la Piscine, 38406 Saint Martin d'Héres, France
D. Nuernberger: European Southern Observatory, Casilla 19001, Santiago 19, Chile
D. Pérez-Ramírez: Facultad de Ciencias Experimentales, Universidad de Jaén, Campus Las Lagunillas
M. A. Guerrero: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
J. French: School of Physics, University College Dublin
G. Melady: School of Physics, University College Dublin
L. Hanlon: School of Physics, University College Dublin
B. McBreen: School of Physics, University College Dublin
K. Leventis: Astronomical Institute ‘Anton Pannekoek’, University of Amsterdam
S. B. Markoff: Astronomical Institute ‘Anton Pannekoek’, University of Amsterdam
S. Leon: Institute de Radioastronomie Millimétrique (IRAM), Avda. Divina Pastora 7, Núcleo Central
A. Kraus: Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
F. J. Aceituno: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
R. Cunniffe: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
P. Kubánek: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
S. Vítek: Instituto de Astrofísica de Andalucía del Consejo Superior de Investigaciones Científicas (IAA-CSIC), PO Box 03004, E-18080 Granada, Spain
S. Schulze: Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany
A. C. Wilson: University of Texas, Austin, Texas 78712, USA
R. Hudec: Astronomical Institute of the Czech Academy of Sciences, Fričova 298, 25165 Ondřejov, Czech Republic
M. Durant: Instituto de Astrofísica de Canarias (IAC), Via Láctea s/n, E-38205 La Laguna (Tenerife), Spain
J. M. González-Pérez: Instituto de Astrofísica de Canarias (IAC), Via Láctea s/n, E-38205 La Laguna (Tenerife), Spain
T. Shahbaz: Instituto de Astrofísica de Canarias (IAC), Via Láctea s/n, E-38205 La Laguna (Tenerife), Spain
S. Guziy: Nikolaev State University, Nikolskaya 24, 54030 Nikolaev, Ukraine
S. B. Pandey: Aryabhatta Research Institute of Observational-Sciences (ARIES), Manora Peak, NainiTal, Uttarakhand, 263129, India
L. Pavlenko: Crimean Astrophysical Observatory
E. Sonbas: Special Astrophysical Observatory of Russian Academy of Science (SAO-RAS), Nizhnij Arkhyz, Karachai-Cherkessia, 369167 Russia
S. A. Trushkin: Special Astrophysical Observatory of Russian Academy of Science (SAO-RAS), Nizhnij Arkhyz, Karachai-Cherkessia, 369167 Russia
N. N. Bursov: Special Astrophysical Observatory of Russian Academy of Science (SAO-RAS), Nizhnij Arkhyz, Karachai-Cherkessia, 369167 Russia
N. A. Nizhelskij: Special Astrophysical Observatory of Russian Academy of Science (SAO-RAS), Nizhnij Arkhyz, Karachai-Cherkessia, 369167 Russia
C. Sánchez-Fernández: European Space Astronomy Centre (ESAC), Avenida de los Castillos s/n, Urbanizacion Villafranca del Castillo, E-28691 Villanueva de la Cañada (Madrid), Spain
L. Sabau-Graziati: Instituto Nacional de Técnica Aeroespacial (INTA)

Nature, 2008, vol. 455, issue 7212, 506-509

Abstract: SWIFT J195509.6+261406 Two groups report the observation of optical flares from SWIFT J195509.6+261406, an intriguing X-ray source located in our Galaxy and initially discovered as a γ-ray burst by the orbiting Swift observatory. Stefanescu et al. detected extremely bright and rapid optical flaring, producing optical light-curves similar to the high energy light-curves of soft γ-ray repeaters and anomalous X-ray pulsars, which are thought to be neutron stars with extremely high magnetic fields (magnetars). In a multiwavelength study Castro-Tirado et al. detected more than 40 flaring episodes at optical wavelengths over a time span of three days. They suggest that SWIFT J195509+261406 could be an isolated magnetar whose bursting activity has been detected at optical wavelengths.

Date: 2008
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DOI: 10.1038/nature07328

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