Annual Review of Astronomy and Astrophysics (author ranking)
31.7(top 1%)
Impact Factor
32.5(top 1%)
extended IF
247(top 1%)
H-Index
203
authors
938
papers
214,565
citations
1,952
citing journals
38,928
citing authors
Thresholds have not been met to have a ranking in this category.
How are inpact factors calculated?
The impact factor (IF) is calculated by counting citations from peer-reviewed journals only.
extended IF also counts citations from books and conference papers. However, no patent, abstract, working papers, online documents, etc., are covered.
Is everything ranked?
To avoid high rankings for small journals, certain thresholds should be met for inclusion. 5 papers and 1,000 citations for lifetime ranking; 2 papers and 100 citations for year ranking.
