Using radioactivities to improve the search for nearby radio-quiet neutron stars

Neutron stars (NS) and black holes (BH) are sources of gravitational waves (GW) and the investigation of young isolated radio-quiet NS can in principle lead to constraints of the equation of state (EoS). The GW signal of merging NSs critically depends on the EoS. However, unlike radio pulsars young...

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Bibliographic Details
Published in:New astronomy reviews 2008-10, Vol.52 (7-10), p.405-408
Main Authors: Hohle, Markus M., Neuhäuser, Ralph, Tetzlaff, Nina
Format: Article
Language:English
Subjects:
Neutron stars
Stellar clusters and associations
Stellar dynamics and kinematics
X-ray sources
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Summary:Neutron stars (NS) and black holes (BH) are sources of gravitational waves (GW) and the investigation of young isolated radio-quiet NS can in principle lead to constraints of the equation of state (EoS). The GW signal of merging NSs critically depends on the EoS. However, unlike radio pulsars young isolated radio-quiet neutron stars are hard to detect and only seven of them are known so far. Furthermore, for GW projects it is necessary to confine regions in the sky where and of which quantity sources of GW can be expected. We suggest strategies for the search for young isolated radio-quiet NSs. One of the strategies is to look for radioactivities which are formed during a supernova (SN) event and are detectable due to their decay. Radioactivities with half lives of ∼1Myr can indicate such an event while other remnants like nebulae only remain observable for a few kyrs. Here we give a brief overview of our strategies and discuss advantages and disadvantages.
ISSN:1387-6473
1872-9630
DOI:10.1016/j.newar.2008.05.010