The Brazilian, who completed his £45m move from champions Manchester City on Monday, was pictured alongside compatriots Gabriel Martinelli, Gabriel Magalhaes and Marquinhos at London Colney.
Arsenal lured Jesus to the Emirates to fill a void at centre forward, having permitted striker Alexandre Lacazette to return to Lyon on a free transfer earlier this summer. The 25-year-old was pictured completing a range of fitness and on-ball drills in training, as he looks to build fitness ahead of a top four surge at Arsenal next campaign.
Jesus is expected to lead the line in Arteta’s starting line-up in front of a three-man attacking midfield.
The Spanish boss utilised Bukayo Saka, Martin Odegaard, Emile Smith-Rowe and Martinelli behind the striker last campaign and now has even more options after the arrival of Fabio Vieira from Porto. Jesus scored eight and assisted nine as Manchester City clinched a fourth Premier League title in five years last season.
However the Brazilian only started 21 of 38 league matches under Pep Guardiola, ultimately failing to hold down a regular spot in attack following the exit of club legend Sergio Aguero last summer.
Jesus joins Arsenal with a rich portfolio of silverware, having won four league titles, four league cups and an FA Cup during his five-year spell in Manchester.