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 report a study of the X‐ray emission from the nuclear region of the low‐surface‐brightness (LSB) galaxy UGC 6614. Very little is known about the central objects in LSB galaxies, especially their X‐ray properties and X‐ray spectra. In this study we have used  XMM–Newton  archival data to study the characteristics of the X‐ray spectrum and the X‐ray flux variability of the active galactic nucleus (AGN) in the LSB galaxy UGC 6614. The nucleus of UGC 6614 is very bright in X‐ray emission with an absorption‐corrected 0.2–10.0 keV luminosity of  ∼1.1 × 10 42  erg s −1  . The X‐ray spectrum is found to be power‐law type with a moderate column density. A short time‐scale of intensity variation and large X‐ray flux are indicative of the presence of a black hole at the centre of this galaxy. Using the method of excess variance, we have determined the black hole mass to be  ∼0.12 × 10 6  M ⊙  . The X‐ray spectral properties are similar to that of the Seyfert I‐type AGNs. Our study thus demonstrates that although LSB galaxies are poor in star formation, they may harbour AGNs with X‐ray properties comparable to that seen in more luminous spiral galaxies.

An X‐ray bright nucleus in the low‐surface‐brightness galaxy UGC 6614