The phrase "within our authority" is correct and usable in written English.
This phrase is generally used when talking about the limits of authority or responsibility given to someone or a group. For example, "We will act on any suggestions relevant to our cause that are within our authority."
"The panel (of judges) has decided that this case falls within our authority..
"We have it within our authority to decide what judges can rule on and what they can't," Mrs. Bachmann said in Iowa in April.
And we remain committed to working closely with our British counterparts to secure our travel systems and do everything within our authority — consistent with fairness — to detect security risks.
"The decision to terminate Bill Marimow as editor of The Inquirer was made by me and Associate Publisher Mike Lorenca, which is within our authority to make such a decision.
"We must do everything within our authorities and resources to strengthen oversight programs and the protection of customers and their funds".
That's well within our authorities and prosecutorial discretion".
"We have done everything and anything we can within our jurisdictional authority," said Mr. Wasserman, an architect.
That action was not within the scope of our authority, though it was, in my opinion a prudent decision.
"Access to our training facilities is a privilege, not a right, and we are operating fully within the scope of our authority".
"The review will look at the location, number and type of resources within each of our authorities including firefighters, vehicles, equipment and fire stations that are needed, and where they should be located to provide the most efficient and effective and safest fire and rescue service across south Wales.
The argument is based on the rationale of authorities within our practical reasoning.
