Change search
ReferencesLink to record
Permanent link

Direct link
Fermi Detection of a Luminous gamma-Ray Pulsar in a Globular Cluster
Show others and affiliations
2011 (English)In: Science, ISSN 0036-8075, Vol. 334, no 6059, 1107-1110 p.Article in journal (Refereed) Published
Abstract [en]

We report on the Fermi Large Area Telescope's detection of gamma-ray (>100 mega-electron volts) pulsations from pulsar J1823-3021A in the globular cluster NGC 6624 with high significance (similar to 7 sigma). Its gamma-ray luminosity, L(gamma) = (8.4 +/- 1.6) x 10(34) ergs per second, is the highest observed for any millisecond pulsar (MSP) to date, and it accounts for most of the cluster emission. The nondetection of the cluster in the off-pulse phase implies that it contains <32 gamma-ray MSPs, not similar to 100 as previously estimated. The gamma-ray luminosity indicates that the unusually large rate of change of its period is caused by its intrinsic spin-down. This implies that J1823-3021A has the largest magnetic field and is the youngest MSP ever detected and that such anomalous objects might be forming at rates comparable to those of the more normal MSPs.

Place, publisher, year, edition, pages
2011. Vol. 334, no 6059, 1107-1110 p.
National Category
Natural Sciences
URN: urn:nbn:se:su:diva-70683DOI: 10.1126/science.1207141ISI: 000297313900043OAI: diva2:482211
authorCount :153Available from: 2012-01-23 Created: 2012-01-23 Last updated: 2012-01-23Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Yang, ZhaoyuZimmer, Stephan
By organisation
Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
In the same journal
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 23 hits
ReferencesLink to record
Permanent link

Direct link