The most common and most likely answer to this crossword clue is the 8 letter word SALINGER
I've seen this crossword clue in Independent
S
A
L
I
N
G
E
R
More clues leading to the result SALINGER
- Crooner pens a line for an American author
- Vocalist entertaining a Latin author
- Author‘s one to stick around after show starts
- From Northern Algiers
- While twisted, remain an author
- Voice encapsulating almost everything as US author
- Wait on head of state and a US novelist
- Writer as one who gives a toss when penning article
- Writer and performer entertaining old crooner?
- Novelist breaking metatarsal in Germany
Buddy explains!

The straight part
We know that "Author" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case author = salinger.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.