2017
DOI: 10.1017/s1743921317008298
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Abstract: We identified gigahertz-peaked spectra behavior from our radio interferometric observations at low frequencies using the Giant Metrewave Radio Telescope. We modeled the turnover spectra based on thermal free-free absorption in the interstellar medium. The free-free absorption is believed to be responsible for the inverted spectrum. Using the model, we were able to put some observational constrains on the physical parameters of the absorbing matter, which allows us to distinguish between the possible sources of… Show more

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“…These observations strongly prove the turn-over spectra of pulsar is caused by its surroundings, i.e., the free-free absorption is the main mechanism forming the turnover spectra. Kijak further probed into the origin of interstellar medium, which may be the supernova remnants, hydrogen ionization region, pular wind nebula [6].…”
Section: Introductionmentioning
confidence: 99%
“…These observations strongly prove the turn-over spectra of pulsar is caused by its surroundings, i.e., the free-free absorption is the main mechanism forming the turnover spectra. Kijak further probed into the origin of interstellar medium, which may be the supernova remnants, hydrogen ionization region, pular wind nebula [6].…”
Section: Introductionmentioning
confidence: 99%