Swift/XRT counterparts to unassociated Fermi high-energy LAT sources

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Table 2

High-energy Fermi sources for which we do not find any X-ray counterpart.

Fermi source	Count rate^†	N_H(Gal)
	(10^-3 counts s^-1)	(10²² cm^-2)

1FHL J0312.8+2013	< 2.71	0.0988
1FHL J0625.9+0002	< 1.80	0.413
1FHL J0928.1–5252	< 4.00	0.938
1FHL J1407.1–6133	< 14.7	2.00
1FHL J1619.8+7540	< 0.67	0.0382
1FHL J1634.7–4705	< 0.65	1.68
1FHL J1758.3–2340	< 0.44	1.12
1FHL J1839.1–0557^‡	< 0.59	1.74
1FHL J1839.4–0708	< 0.39	1.44
1FHL J2004.4+3339	< 0.98	1.15

Notes.

^(†)

Count rates are extracted in the 0.3–10 keV energy band;

^(‡)

source in the field of HESS J1841–055.

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