Guild Wars 2

Hi, im quite new to the game and i just saw that Fiery Rush from GS is leaving a line of aoe.

Wiki:
The line of fire left behind by the rush is comprised of a line of small AoEs that each tick damage independently. As such, the fire will deal more damage the larger the enemy’kittenbox.

Now i was just wondering if there is any possibility to increase aoe radius, Traits? Gears?

Appeciate an answer as soon as possible!

no, the aoe radius cannot be increased