Is there a way to provide Authentication token inside header.

[yashgoyal1407]

I am able to make calls to my system using the commands mentioned in the query,
Query - ./slowhttptest -c 1000 -H -g -o my_header_stats -i 10 -r 200 -t GET -u https://myseceureserver/resources/index.html -x 24 -p 3

but the above query is failing in authentication. is there a way to pass the authentication token as part of header?