A uniformly selected, all-sky optical AGN catalog, for UHECR correlation

Ingyin Zaw, Yanping Chen, Glennys R. Farrar

Research output: Contribution to journalConference articlepeer-review


Studies discerning whether there is a significant correlation between UHECR arrival directions and optical AGN are hampered by the lack of a uniformly selected and complete all-sky optical AGN catalog. To remedy this, we are preparing such a catalog based on the 2MASS Redshift Survey (2MRS), a spectroscopic sample of ∼ 44,500 galaxies complete to a K magnitude of 11.75 over 91% of the sky. We have analyzed the available optical spectra of these 2MRS galaxies (∼ 80% of the galaxies), in order to identify the AGN amongst them with uniform criteria. We present a first-stage release of the AGN catalog for the southern sky, based on spectra from the 6dF Galaxy survey and CTIO telescope. Providing a comparably uniform and complete catalog for the northern sky is more challenging because the spectra for the northern galaxies were taken with different instruments.

Original languageEnglish (US)
Article number559
JournalProceedings of Science
StatePublished - 2015
Event34th International Cosmic Ray Conference, ICRC 2015 - The Hague, Netherlands
Duration: Jul 30 2015Aug 6 2015

ASJC Scopus subject areas

  • General


Dive into the research topics of 'A uniformly selected, all-sky optical AGN catalog, for UHECR correlation'. Together they form a unique fingerprint.

Cite this