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Fig. 2.

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Effect of the magnetic field value on the properties of Geminga’s synchrotron halo. Left: SEDs of the Geminga pulsar halo for the synchrotron emissions integrated over an angular radius of 0.2° for different values of the magnetic field B. Right: Surface brightness of the Geminga synchrotron halo integrated over the energy range Eγ = [10−40] keV for different B. We note the double log scale.

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