An infrared ring around the magnetar SGR 1900+14

S. Wachter (), E. Ramirez-Ruiz, V. V. Dwarkadas, C. Kouveliotou, J. Granot, S. K. Patel and D. Figer
Additional contact information
S. Wachter: Spitzer Science Center, California Institute of Technology, Pasadena, California 91125, USA
E. Ramirez-Ruiz: Astronomy & Astrophysics, 201 Interdisciplinary Sciences Building, Santa Cruz, California 95064, USA
V. V. Dwarkadas: University of Chicago, 5640 South Ellis Avenue, AAC 010c, Chicago, Illinois 60637, USA
C. Kouveliotou: NASA/Marshall Space Flight Center, VP62, NSSTC, 320 Sparkman Drive, Huntsville, Alabama 35805, USA
J. Granot: Centre for Astrophysics Research, University of Hertfordshire, College Lane
S. K. Patel: Optical Sciences Corporation, 6767 Old Madison Pike, Suite 650, Huntsville, Alabama 35806, USA
D. Figer: Chester F. Carlson Center for Imaging Science, Rochester Institute of Technology, 54 Lomb Memorial Drive, Rochester, New York 14623, USA

Nature, 2008, vol. 453, issue 7195, 626-628

Abstract: Magnetars: Ring of fire Magnetars are rotating neutron stars with magnetic fields at least an order of magnitude stronger than those of 'normal' radio pulsars. There are only about a dozen magnetars known to date and their evolutionary history is not yet firmly established. Circumstantial evidence links them to very massive stars as progenitors; now the discovery of an infrared ring or shell around magnetar SGR 1900+14 (a soft gamma repeater) confirms that link. Observations from the Spitzer telescope are consistent with the presence of a dust-free cavity in the magnetar environment — possibly produced by the giant flare emitted by the source in August 1998 — strongly suggesting an association with a cluster of massive stars.

Date: 2008
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DOI: 10.1038/nature06987

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