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Updated: Jul 19, 2026

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
A long-period, violently variable X-ray source in a young supernova remnant
A De Luca1, P A Caraveo, S Mereghetti
1Istituto Nazionale d'Astrofisica-Istituto di Astrofisica Spaziale e Fisica Cosmica, Via Bassini 15, I-20133 Milano, Italy. deluca@iasf-milano.inaf.it
Observations reveal a slow, periodic X-ray source in the RCW 103 supernova remnant. This neutron star may be a peculiar magnetar, slowed by debris, challenging compact object evolution theories.
Area of Science:
- Astronomy and Astrophysics
- X-ray Astronomy
- Supernova Remnants
Background:
- The supernova remnant RCW 103 is approximately 2000 years old.
- X-ray sources at the centers of supernova remnants can provide insights into stellar evolution and compact object formation.
Purpose of the Study:
- To investigate the nature of the X-ray source at the center of the RCW 103 supernova remnant.
- To determine the properties and origin of the observed X-ray emission.
Main Methods:
- Utilizing observational data from the Newton X-ray Multimirror Mission satellite.
- Analyzing the X-ray emission for periodic modulations and pulsations.
Main Results:
- A strong periodic modulation with a period of 6.67 +/- 0.03 hours was detected from the central X-ray source.
- No evidence of fast pulsations was found, ruling out typical pulsar behavior.
Conclusions:
- The source is likely either an X-ray binary with a compact object and low-mass star or an isolated neutron star.
- If an isolated neutron star, it represents a peculiar, slow-rotating magnetar possibly influenced by a supernova debris disk.
- Both potential scenarios necessitate non-standard models for the formation and evolution of compact objects following supernova explosions.
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