Skip to main content

Thank you for visiting nature.com. 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.

  • News & Views
  • Published:

Astrophysics

Exception tests the rules

Detailed observations of an intermittent ultraluminous X-ray source indicate that its emission is unlikely to be powered by mass accretion onto an intermediate-mass black hole as previously thought. See Letter p.500

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Figure 1: The host galaxy of ultraluminous X-ray source M 101 ULX-1.

JIFENG LIU/SDSS

References

  1. Liu, J.-F., Bregman, J. N., Bai, Y., Justham, S. & Crowther, P. Nature 503, 500–503 (2013).

    Article  ADS  CAS  Google Scholar 

  2. Kong, A., Di Stefano, R. & Yuan, F. Astrophys. J. 617, L49–L52 (2004).

    Article  ADS  CAS  Google Scholar 

  3. Begelman, M. Astrophys. J. 551, 897–906 (2001).

    Article  ADS  Google Scholar 

  4. Makishima, K. et al. Astrophys. J. 535, 632–643 (2000).

    Article  ADS  Google Scholar 

  5. Miller, J. M., Fabian, A. C. & Miller, M. C. Astrophys. J. 614, L117–L120 (2004).

    Article  ADS  Google Scholar 

  6. Liu, J. F. Astrophys. J. 704, 1628–1639 (2009).

    Article  ADS  CAS  Google Scholar 

  7. Prestwich, A. et al. Astrophys. J. 769, 92 (2013).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to K. D. Kuntz.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kuntz, K. Exception tests the rules. Nature 503, 477–478 (2013). https://doi.org/10.1038/503477a

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1038/503477a

Search

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