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

We present our long term Chandra X-ray monitoring data for thegravitationally lensed quasar Q2237+0305 with 20 epochs spanning 10 years. Weeasily detect microlensing variability between the images in the full (0.2--8keV), soft (0.2--2 keV), and hard (2--8 keV) bands at very high confidence. Wealso detect, for the first time, chromatic microlensing differences between thesoft and hard X-ray bands. The hard X-ray band is more strongly microlensedthan the soft band, suggesting that the corona above the accretion disk thoughtto generate the X-rays has a non-uniform electron distribution, in which thehotter and more energetic electrons occupy more compact regions surrounding theblack holes. Both the hard and soft X-ray bands are more strongly microlensedthan the optical (restframe UV) emission, indicating that the X-ray emission ismore compact than the optical, confirming the microlensing results from otherlenses.

Discovery of Energy Dependent X-ray Microlensing in Q2237+0305