Discovery of γ-Ray Pulsations from PSR J1835–3259B in the Globular Cluster NGC 6652

Motivated by the newly discovery of a spin period 1.83\,ms pulsar J1835$-$3259B in globular cluster (GC) NGC~6652, we analyze gamma-ray data obtained with Large Area Telescope (LAT) onboard {\it Fermi Gamma-ray Space (Fermi)} for GC and detect pulsations this millisecond (MSP) at 5.4$\sigma$ confidence level (the weighted H-test value is $\sim 41$). From timing analysis data, pulse profile that similar to radio one established. We thus consider have detected \gr\ emission MSP, discuss implications. Based on our results different studies sources GC, observed from could mainly arise like previous two cases GCs NGC~6624 NGC~6626. Assuming case, pulsar, GC's 9.46\,kpc distance having spin-down luminosity $\leq 4.3\times 10^{35}$ erg s$^{-1}$, would $\simeq (5.04\pm0.44)\times 10^{34}$ s$^{-1}$ efficiency $\gtrsim 0.12$.