Free Access

Table 1.

Blazars observed by Swift with short and frequent, mostly daily XRT exposures in PC mode.

Blazar name No. of XRT No. of detections ⟨rate⟩ (b) MAD (c)
observations (a) below pileup limit (cts s−1) (%)
OJ 287 304 303 0.202 23.3
3C 279 282 261 0.355 17.5
PKS 1510−089 218 218 0.217 16.6
S5 0716+714 185 156 0.294 34.0
PG 1553+113 165 33 1.040 41.3
PKS 0235+164 158 155 0.048 40.5
PKS 0208−512 140 140 0.063 23.3
BZQJ 1635+3808 130 130 0.105 47.1
1ES 2344+514 126 64 0.599 26.7
PKS 0528+134 116 116 0.035 48.0
ON 231 113 112 0.057 25.8
CTA 102 110 89 0.322 50.9
1H 0323+342 108 88 0.426 23.7
MS 1207.9+3945 103 103 0.084 21.5
PKS 0921−213 94 94 0.216 19.9
NRAO 530 89 89 0.045 19.0
3C 66A 83 83 0.100 28.1
PKS 1222+216 73 73 0.111 22.2
TXS 0506+056 (d) 49 49 0.053 23.5

Notes.

(a)

Integrated with one day time interval executed in PC mode with exposure time longer than 200 s.

(b)

Median count rate in the total 0.3 − 10 keV band.

(c)

Median Absolute Deviation about the median count rate.

(d)

Blazar associated with the IceCube high-energy neutrino IC170922 and other IceCube neutrinos (Padovani et al. 2018).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.