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Related Experiment Video

Updated: May 17, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

Published on: July 2, 2012

Binary millisecond pulsar discovery via gamma-ray pulsations.

H J Pletsch¹, L Guillemot, H Fehrmann

¹Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), D-30167 Hannover, Germany. holger.pletsch@aei.mpg.de

Science (New York, N.Y.)

|November 1, 2012

Summary

This summary is machine-generated.

Astronomers discovered PSR J1311-3430, a millisecond pulsar, using gamma-ray data. This recycled neutron star has the shortest orbital period ever found for a spin-powered pulsar binary.

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Area of Science:

* Astrophysics
* High-energy astrophysics
* Neutron star physics

Background:

* Millisecond pulsars are old neutron stars with high rotation rates.
* Previously, these

Purpose of the Study:

* To detect and identify new pulsars using gamma-ray data.
* To investigate the nature of an unidentified gamma-ray source.

Main Methods:

* Conducted a computing-intensive blind search of Fermi Large Area Telescope gamma-ray data.
* Utilized partial constraints from optical data to refine the search.

Main Results:

* Detected a 2.5-millisecond pulsar, PSR J1311-3430.
* Identified the pulsar as the source of a long-standing gamma-ray enigma.
* Found the pulsar in a circular orbit with a 93-minute period, the shortest known for a spin-powered pulsar binary.

Conclusions:

* The discovery confirms the existence of millisecond pulsars detectable in gamma-rays.
* PSR J1311-3430 represents a new record for the shortest orbital period in a spin-powered pulsar binary.
* This finding opens new avenues for pulsar research and understanding compact object binaries.