English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The historical supernova remnant (SNR) Tycho SN 1572 originates from theexplosion of a normal Type Ia supernova which is believed to have originatedfrom a carbon-oxygen white dwarf in a binary system. We analyze the 21cmcontinuum, HI and 12CO-line data from the Canadian Galactic Plane Survey in thedirection of SN 1572 and surrounding region. We construct HI absorption spectrato SN 1572 and three nearby compact sources. We conclude that SN 1572 has nomolecular cloud interaction, which argues against previous claims that amolecular cloud is interacting with the SNR. This new result does not support arecent claim that dust, newly detected by AKARI, originates from such aSNR-cloud interaction. We suggest that the SNR has a kinematic distance of 2.5- 3.0 kpc based on a nonlinear rotational curve model. Very-high-energyGamma-ray emission from the remnant has been detected by the VERITAS telescope,so our result shows that its origin should not be an SNR-cloud interaction.Both radio and X-ray observations support that SN 1572 is an isolated Type IaSNR.

Tycho SN 1572: A Naked Ia Supernova Remnant without Associated Ambient Molecular Cloud