Tomasz Nowakowski is a writer for the website Phys.org.
The region is seen at 2.3 GHz and 1.4 GHz. Araya et al., 2021.
Astronomers from Costa Rica and Australia have reported the detection of a new supernova remnant. The researchers found that the source is an SNR. The paper was published on arXiv.org.
A supernova explosion results in diffuse structures called SNRs. The ejected material from the exploded star has been swept up by the passage of the shockwave.
Analyzing the remnants of the supernova explosion is important for the study of the evolution of the universe and the dispersal of heavy elements made in the explosion. The acceleration of Cosmic rays is thought to be caused by SNRs.
The 4FGL J 1723.50501 is a source of gamma-ray rays. There is an unclassified radio shell along the southwestern edge of the source, suggesting that it may be associated to an object.
A team of astronomer led by the University of Costa Rica presented further evidence for the SNR hypothesis. The study is based on the analysis of archival data from the HI Parkes All-Sky Survey.
We present an analysis of radio observations in the region of FHES J1723.50501 that confirm the existence of a shell. The spectrum for the radio emission is non-thermal. The researchers explained that the shell-like appearance and spectrum of the object establishes it as a new SNR.
The paper states that G17.8+16.7 is clearly visible as a sharp-edged elliptical shell which is filled and more defined towards the eastern side. The radio shell is 51 by 45 minutes.
The total density of G17.8+16.7 is 2.1 Jy, while at 2.3 GHz it was calculated to be 1.45 Jy. The two-point index is consistent with non-thermal emission from a shell supernova remnant.
The results show that the SNR G17.8+16.7 is between 4,500 and 11,000 light years away from the Earth. The astronomer can't rule out that the SNR is younger or older than they think. Future multiwavelength observations of this source are required to resolve uncertainties.
A New Supernova Remnant is information from the book, G17.8+16.7: A New Supernova Remnant.
The Science X Network will be launched in 2021.
The new supernova remnant was retrieved from the internet on December 13th, 2021.
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