New Limits on Gravitational Waves from Supernova Remnants Vela Jr. and G347.3-0.5
A recent study titled "Deep Einstein@Home search for Continuous Gravitational Waves from the Central Compact Objects in the Supernova Remnants Vela Jr. and G347.3-0.5 using LIGO public data" was conducted by Jing Ming and a team of researchers, including Maria Alessandra Papa, Heinz-Bernd Eggenstein, Banafsheh Beheshtipour, Bernd Machenschalk, Reinhard Prix, Bruce Allen, and Maximillian Bensch. The research focused on detecting continuous gravitational waves from central compact objects associated with the supernova remnants Vela Jr. and G347.3-0.5 using public data from the LIGO O2 and O3 observing runs.
The study analyzed over 1018 different gravitational waveforms, spanning frequencies from 20 Hz to 1300 Hz. Despite extensive analysis, the researchers reported no significant signal candidates for either of the targets. Consequently, they established the most stringent upper limits to date on the amplitude of gravitational wave signals from G347.3-0.5, indicating that the deformations are below 10-6 in a large portion of the search band. At the frequency of best strain sensitivity, around 161 Hz, the upper limit on the gravitational wave intrinsic amplitude was found to be approximately 6.2 × 10-26.
For Vela Jr., the upper limit was slightly higher at approximately 6.4 × 10-26 at 163 Hz. These findings are significant as they provide crucial constraints on the properties of gravitational waves from these supernova remnants, contributing to our understanding of the astrophysical phenomena associated with them. The results also indicate that the upper limits established are a factor of 10 smaller than previous indirect age-based limits, enhancing the precision of gravitational wave research in this area.
The full paper can be accessed at arXiv:2408.14573.