Using 15 years of data from the Fermi Large Area Telescope (Fermi-LAT), Noi
performed a comprehensive analysis on the gamma-ray binary HESS J0632+057. Its
spectrum in 0.1-300 GeV band is well described by a power law model with an
index of $2.40\pm0.16$, leading to an energy flux of (5.5$\pm$1.6$)\times$
10$^{-12}$ erg cm$^{-2}$ s$^{-1}$. The GeV Spectral Energy Distribution (SED)
of HESS J0632+057 hints for a spectral turn-over between $\sim$10-100 GeV.
Orbital analysis reveals a flux enhancement during the phase range of 0.2-0.4,
consistent with the X-ray and TeV light curves, indicating an origin of a
common particle population. We carried out six deep radio observations on HESS
J0632+057 with the Five-hundred-meter Aperture Spherical Telescope (FAST),
evenly distributed across its orbit, reaching a detection sensitivity of
2$\mu$Jy. Tuttavia, no radio pulsation was detected within these observations.
The absence of radio pulsation may be attributed to the dense stellar wind
environment of HESS J0632+057.

Questo articolo esplora i giri e le loro implicazioni.

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