Speaker
Description
We present radio observations of the source G327.1-1.1, a non-thermal composite supernova remnant (SNR). Observations have been performed at eight frequencies with MeerKAT’s L-band (856 – 1712 MHz) receivers. The data is part of the SARAO MeerKAT Galactic Plane Survey (SMGPS) radio continuum which covers 251o ≤ l ≤ 358o, 2o ≤ l ≤ 61o at |b| ≤ 1.5o. With this data we have been able to produce a new high quality image. Also, we have found that the entire remnant has a spectral index (α) of 0.35 ± 0.18 while the PWN has a α = 0.34 ±0.14. These results are in agreement with literature values. Using sub-band images we have produced an in-band spectral index map of G327.1-1.1. The maps show spectral index variation across the remnant, with spectral flattening (0.0 ≤ α ≤ 0.8) within the central region of the PWN and the westernmost of the remnant. The flatter spectra reflects an abundance of high energy electrons. In the PWN flatter spectra coincide wit location of the filamentary structures. Steeper spectra (α > 0.8) has been detected on the south-western region of the PWN and a narrow strip of south-eastern region of the remnant. The spectra gradually moves from flatter spectra to steeper spectra as the levels of high energy electrons falls quickly.
| Stream | Science or Engineering |
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