Interstellar absorptions and shocked clouds towards supernova remnant RX J0852.0-4622

Abstract

We present results of survey of interstellar absorptions towards supernova remnant (SNR) RX J0852.0-4622. The distribution of KI absorbers along the distance of the background stars is indicative of a local region (d<600pc) strongly depopulated by KI line-absorbing clouds. This fact is supported by the behavior of the interstellar extinction. We find four high-velocity CaII components with velocities of >100km/s towards three stars and identify them with shocked clouds of Vela SNR. We reveal and measure acceleration of two shocked clouds at the approaching and receding sides of Vela SNR along the same sight line. The clouds acceleration, velocity, and CaII column density are used to probe cloud parameters. The total hydrogen column density of both accelerating clouds is found to be similar (~6*10^{17} cm${}^{-2}$) which indicates that possibly there is a significant amount of small-size clouds in the vicinity of Vela SNR.

arXiv commentaccepted in MNRAS

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Cited by in corpus (6)

• Hydrodynamic simulations of the interaction of supernova shock waves with a clumpy environment: the case of the RX J0852.0-4622 (Vela Jr) supernova remnant
• A Morphological Study of the Supernova Remnant RX J0852.0-4622 (Vela Jr.)
• Wavelength calibration of the Hamilton echelle spectrograph
• Evolutionary status of the active star PZ Mon
• Unveiling Vela - Time Variability of Na I D lines in the Direction of the Vela Supernova Remnant
• Fast moving pulsars as probes of interstellar medium