CaltechAUTHORS
  A Caltech Library Service

Optical pulsations from the anomalous X-ray pulsar 4U0142+61

Kern, B. and Martin, C. (2002) Optical pulsations from the anomalous X-ray pulsar 4U0142+61. Nature, 417 (6888). pp. 527-529. ISSN 0028-0836. doi:10.1038/417527a. https://resolver.caltech.edu/CaltechAUTHORS:20150331-103039680

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20150331-103039680

Abstract

Anomalous X-ray pulsars (AXPs) differ from ordinary radio pulsars in that their X-ray luminosity is orders of magnitude greater than their rate of rotational energy loss, and so they require an additional energy source. One possibility is that AXPs are highly magnetized neuron stars—or 'magnetars'—having surface magnetic fields greater than 10^(14) G. This would make them similar to the soft y-ray repeaters (SGRs), but alternative models that do not require extreme magnetic fields also exist. An optical counterpart to the AXP 4U0142+61 was recently discovered, consistent with emission from a magnetar, but also from a magnetized hot white dwarf, or an accreting isolated neutron star. Here we report the detection of optical pulsations from 4U0142+61. The pulsed fraction of optical light (27 per cent) is five to ten times greater than that of soft X-rays, from which we conclude that 4U0142+61 is a magnetar. Although this establishes a direct relationship between AXPs and the soft y-ray repeaters, the evolutionary connection between AXPs, SGRs and radio pulsars remains controversial.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1038/417527aDOIArticle
http://www.nature.com/nature/journal/v417/n6888/abs/417527a.htmlPublisherArticle
http://rdcu.be/crrfPublisherFree ReadCube access
http://dx.doi.org/10.1038/nature00881ErrataErratum
http://www.nature.com/nature/journal/v418/n6894/full/nature00881.htmlErrataErratum
http://rdcu.be/crrgErrataErratum Free ReadCube access
ORCID:
AuthorORCID
Martin, C.0000-0002-8650-1644
Additional Information:© 2002 Nature Publishing Group. Received 13 December 2001; Accepted 12 April 2002. We thank S. Kaye, the Palomar Observatory staff, D. Kaplan, S. Kulkarni and R. Rutledge for assistance. This work was supported by grants from the National Science Foundation and the California Institute of Technology.
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
CaltechUNSPECIFIED
Issue or Number:6888
DOI:10.1038/417527a
Record Number:CaltechAUTHORS:20150331-103039680
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150331-103039680
Official Citation:Optical pulsations from the anomalous X-ray pulsar 4U0142+61 p527 B. Kern and C. Martin doi:10.1038/417527a
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56242
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:31 Mar 2015 17:47
Last Modified:10 Nov 2021 20:56

Repository Staff Only: item control page