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

Recent observations in galaxies and clusters indicate dark matter densityprofiles exhibit core-like structures which contradict to the numericalsimulation results of collisionless cold dark matter. The idea ofself-interacting cold dark matter (SICDM) has been invoked to solve thediscrepancies between the observations and numerical simulations. In thisarticle, I derive some important scaling relations in galaxies and clusters byusing the long-range SICDM model. These scaling relations give good agreementswith the empirical fittings from observational data in galaxies and clusters ifthe dark matter particles are only slightly self-interacting. Also, there mayexist a universal critical optical depth $\tau_c$ that characterizes thecore-like structures. These results generally support the idea of SICDM totackle the long-lasting dark matter problem.

Scaling relations of the slightly self-interacting cold dark matter in galaxies and clusters