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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Context. We are creating the AKARI mid-infrared all-sky diffuse maps. Througha foreground removal of the zodiacal emission, we serendipitously detected abright residual component whose angular size is about 50 x 20 deg. at awavelength of 9 micron. Aims. We investigate the origin and the physicalproperties of the residual component. Methods. We measured the surfacebrightness of the residual component in the AKARI mid-infrared all-sky maps.Results. The residual component was significantly detected only in 2007January, even though the same region was observed in 2006 July and 2007 July,which shows that it is not due to the Galactic emission. We suggest that thismay be a small cloud passing near the Earth. By comparing the observedintensity ratio of I_9um/I_18um with the expected intensity ratio assumingthermal equilibrium of dust grains at 1 AU for various dust compositions andsizes, we find that dust grains in the moving cloud are likely to be muchsmaller than typical grains that produce the bulk of the zodiacal light.Conclusions. Considering the observed date and position, it is likely that itoriginates in the solar coronal mass ejection (CME) which took place on 2007January 25.

A likely detection of a local interplanetary dust cloud passing near the Earth in the AKARI mid-infrared all-sky map