Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.


The missing link

Some stars might be 'magnetars', powered by magnetism instead of fusion. The discovery of an X-ray burst from an anomalous X-ray pulsar suggests that this type of star can be added to the list.

Your institute does not have access to this article

Access options

Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.

Figure 1: The surface of the Sun photographed by the TRACE spacecraft.



  1. Gavriil, F. P., Kaspi, V. M. & Woods, P. M. Nature 419, 142–144 (2002).

    ADS  CAS  Article  Google Scholar 

  2. Thompson, C. & Duncan, R. C. Astrophys. J. 408, 194–217 (1993).

    ADS  Article  Google Scholar 

  3. Pacynski, B. Acta Astron. 42, 145–153 (1992).

    ADS  Google Scholar 

  4. Kulkarni, S. R. & Frail, D. A. Nature 365, 33–35 (1993).

    ADS  Article  Google Scholar 

  5. Kouveliotou, C. et al. Nature 393, 235–237 (1998).

    ADS  CAS  Article  Google Scholar 

  6. Thompson, C. & Duncan, R. C. Mon. Not. Astron. Soc. 275, 255–300 (1995).

    ADS  Article  Google Scholar 

  7. Gaensler, B. M., Slane, P. O., Gotthelf, E. V. & Vasisht, G. Astrophys. J. 559, 963–972 (2001).

    ADS  Article  Google Scholar 

  8. Ibrahim, A. I. et al. Astrophys. J. 574, L51–L55 (2002).

    ADS  Article  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Shri Kulkarni.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Kulkarni, S. The missing link. Nature 419, 121–123 (2002).

Download citation

  • Issue Date:

  • DOI:


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing