Skip to main content
We gratefully acknowledge support from the Simons Foundation, member institutions, and all contributors. Donate
arXiv logo
Cornell University Logo

Astrophysics > High Energy Astrophysical Phenomena

arXiv:2108.11701 (astro-ph)
[Submitted on 26 Aug 2021]

Title:A New Gamma-ray Emitting Population of FR0 Radio Galaxies

Authors:Vaidehi S. Paliya
View PDF
Abstract:The enigmatic class of Fanaroff-Riley type 0 (FR0) radio galaxies is emerging as the missing link between the faint yet numerous population of compact radio sources in nearby galaxies and the canonical Fanaroff-Riley classification scheme. This letter reports the first gamma-ray identification of three FR0 galaxies above 1 GeV using more than a decade of the Fermi Large Area Telescope observations. A cumulative gamma-ray emission at >5 sigma significance was also detected from the gamma-ray unresolved FR0 sources using the stacking technique, suggesting the FR0 population to be a gamma-ray emitter as a whole. The multi-frequency properties of the gamma-ray detected sources are similar to other FR0s, thus indicating the high-energy radiation to originate from misaligned jets. Given their large abundance, FR0 radio galaxies are proposed as plausible candidates for IceCube-detected neutrinos and the results presented in this letter may provide crucial constraints on their gamma-ray production mechanism and the origin of cosmic neutrinos.
Comments: ApJ Letters, in press
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); Astrophysics of Galaxies (astro-ph.GA)
Cite as: arXiv:2108.11701 [astro-ph.HE]
  (or arXiv:2108.11701v1 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.2108.11701
Related DOI: https://doi.org/10.3847/2041-8213/ac2143

Submission history

From: Vaidehi Sharan Paliya Dr. [view email]
[v1] Thu, 26 Aug 2021 10:49:17 UTC (2,330 KB)
Full-text links:

Access Paper:

license icon view license
Current browse context:
astro-ph.HE
< prev   |   next >
new | recent | 2021-08
Change to browse by:
astro-ph
astro-ph.GA

References & Citations

export BibTeX citation

Bookmark

BibSonomy logo Reddit logo

Bibliographic and Citation Tools

Bibliographic Explorer (What is the Explorer?)
Connected Papers (What is Connected Papers?)
Litmaps (What is Litmaps?)
scite Smart Citations (What are Smart Citations?)

Code, Data and Media Associated with this Article

alphaXiv (What is alphaXiv?)
CatalyzeX Code Finder for Papers (What is CatalyzeX?)
DagsHub (What is DagsHub?)
Gotit.pub (What is GotitPub?)
Hugging Face (What is Huggingface?)
Papers with Code (What is Papers with Code?)
ScienceCast (What is ScienceCast?)

Demos

Replicate (What is Replicate?)
Hugging Face Spaces (What is Spaces?)
TXYZ.AI (What is TXYZ.AI?)

Recommenders and Search Tools

Influence Flower (What are Influence Flowers?)
CORE Recommender (What is CORE?)
IArxiv Recommender (What is IArxiv?)

arXivLabs: experimental projects with community collaborators

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.

Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)