Matches in SemOpenAlex for { <https://semopenalex.org/work/W2002034199> ?p ?o ?g. }
- W2002034199 endingPage "A118" @default.
- W2002034199 startingPage "A118" @default.
- W2002034199 abstract "Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope array in December 2009. This blazar is one of the brightest extragalactic objects in the Fermi bright source list and has a hard spectrum in the MeV to GeV range. In the TeV range, a photon index of 3.89 ± 0.37 (stat) ±0.22 (sys) and a flux normalisation at 1 TeV, Φ1 TeV = (3.5 ± 1.1(stat) ± 0.9(sys)) × 10-13 cm-2 s-1 TeV-1 were found. The detection with H.E.S.S. triggered observations in the X-ray band with the Swift and RXTE telescopes. Simultaneous UV and optical data from Swift UVOT and data from the optical telescopes ATOM and ROTSE are also available. The spectrum and light curve measured with H.E.S.S. are presented and compared to the multi-wavelength data at lower energies. A rapid flare is seen in the Swift XRT and RXTE data, together with a flux variation in the UV band, at a time scale of the order of one day. A firm upper limit of z < 0.59 on the redshift of PKS 0447−439 is derived from the combined Fermi-LAT and H.E.S.S. data, given the assumptions that there is no upturn in the intrinsic spectrum above the Fermi-LAT energy range and that absorption on the extragalactic background light (EBL) is not weaker than the lower limit provided by current models. The spectral energy distribution is well described by a simple one-zone synchrotron self-Compton scenario, if the redshift of the source is less than z ≲ 0.4." @default.
- W2002034199 created "2016-06-24" @default.
- W2002034199 creator A5000537430 @default.
- W2002034199 creator A5001945222 @default.
- W2002034199 creator A5002874840 @default.
- W2002034199 creator A5003430109 @default.
- W2002034199 creator A5003639516 @default.
- W2002034199 creator A5004409636 @default.
- W2002034199 creator A5004470421 @default.
- W2002034199 creator A5006110933 @default.
- W2002034199 creator A5006398227 @default.
- W2002034199 creator A5006766709 @default.
- W2002034199 creator A5008010609 @default.
- W2002034199 creator A5008158938 @default.
- W2002034199 creator A5008242761 @default.
- W2002034199 creator A5008602036 @default.
- W2002034199 creator A5008761268 @default.
- W2002034199 creator A5010650899 @default.
- W2002034199 creator A5011319330 @default.
- W2002034199 creator A5011472335 @default.
- W2002034199 creator A5011730868 @default.
- W2002034199 creator A5013639383 @default.
- W2002034199 creator A5014215397 @default.
- W2002034199 creator A5014702664 @default.
- W2002034199 creator A5014845783 @default.
- W2002034199 creator A5016013379 @default.
- W2002034199 creator A5016165443 @default.
- W2002034199 creator A5016341295 @default.
- W2002034199 creator A5016379761 @default.
- W2002034199 creator A5016535051 @default.
- W2002034199 creator A5016693943 @default.
- W2002034199 creator A5017597764 @default.
- W2002034199 creator A5017632046 @default.
- W2002034199 creator A5018845601 @default.
- W2002034199 creator A5018848092 @default.
- W2002034199 creator A5019047661 @default.
- W2002034199 creator A5020018592 @default.
- W2002034199 creator A5020234879 @default.
- W2002034199 creator A5020529042 @default.
- W2002034199 creator A5020551197 @default.
- W2002034199 creator A5020772745 @default.
- W2002034199 creator A5020835718 @default.
- W2002034199 creator A5021088707 @default.
- W2002034199 creator A5021459185 @default.
- W2002034199 creator A5021589894 @default.
- W2002034199 creator A5021924367 @default.
- W2002034199 creator A5022261403 @default.
- W2002034199 creator A5022809978 @default.
- W2002034199 creator A5023076919 @default.
- W2002034199 creator A5024168359 @default.
- W2002034199 creator A5024503391 @default.
- W2002034199 creator A5024876369 @default.
- W2002034199 creator A5025036902 @default.
- W2002034199 creator A5025374881 @default.
- W2002034199 creator A5025412460 @default.
- W2002034199 creator A5025423639 @default.
- W2002034199 creator A5026164243 @default.
- W2002034199 creator A5026292544 @default.
- W2002034199 creator A5026916338 @default.
- W2002034199 creator A5027009630 @default.
- W2002034199 creator A5027110356 @default.
- W2002034199 creator A5027255654 @default.
- W2002034199 creator A5028503608 @default.
- W2002034199 creator A5028809172 @default.
- W2002034199 creator A5028973511 @default.
- W2002034199 creator A5029003136 @default.
- W2002034199 creator A5030013529 @default.
- W2002034199 creator A5030103540 @default.
- W2002034199 creator A5030333300 @default.
- W2002034199 creator A5030482539 @default.
- W2002034199 creator A5030871375 @default.
- W2002034199 creator A5032897399 @default.
- W2002034199 creator A5032970177 @default.
- W2002034199 creator A5033663496 @default.
- W2002034199 creator A5034493906 @default.
- W2002034199 creator A5034888164 @default.
- W2002034199 creator A5035724494 @default.
- W2002034199 creator A5037159203 @default.
- W2002034199 creator A5037688108 @default.
- W2002034199 creator A5038038442 @default.
- W2002034199 creator A5038116948 @default.
- W2002034199 creator A5038204670 @default.
- W2002034199 creator A5038461246 @default.
- W2002034199 creator A5039176934 @default.
- W2002034199 creator A5039641617 @default.
- W2002034199 creator A5039814151 @default.
- W2002034199 creator A5040573743 @default.
- W2002034199 creator A5040996553 @default.
- W2002034199 creator A5041057342 @default.
- W2002034199 creator A5041801846 @default.
- W2002034199 creator A5042053083 @default.
- W2002034199 creator A5042170342 @default.
- W2002034199 creator A5043142651 @default.
- W2002034199 creator A5043229660 @default.
- W2002034199 creator A5043992239 @default.
- W2002034199 creator A5044452103 @default.
- W2002034199 creator A5044848842 @default.
- W2002034199 creator A5044883324 @default.