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 an analysis of 15 Chandra observations of the nearby spiral galaxyM81 taken over the course of six weeks in May--July 2005. Each observationreaches a sensitivity of ~10^37 erg/s. With these observations and one previousdeeper Chandra observation, we compile a master source list of 265 pointsources, extract and fit their spectra, and differentiate basic populations ofsources through their colors. We also carry out variability analyses ofindividual point sources and of X-ray luminosity functions in multiple regionsof M81 on timescales of days, months, and years. We find that, despitemeasuring significant variability in a considerable fraction of sources,snapshot observations provide a consistent determination of the X-rayluminosity function of M81. We also fit the X-ray luminosity functions formultiple regions of M81 and, using common parametrizations, compare theseluminosity functions to those of two other spiral galaxies, M31 and the MilkyWay.

Luminosity Functions and Point Source Properties from Multiple Chandra Observations of M81