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First NuSTAR observations of Mrk 501 within a radio to TeV multi-instrument campaign
(American Astronomical Society, 2015)
We report on simultaneous broadband observations of the TeV-emitting blazar Markarian 501 between 2013 April
1 and August 10, including the first detailed characterization of the synchrotron peak with Swift and NuSTAR.
During ...
Nature of intranight optical variability of BL Lacertae
(Oxford University Press, 2015)
We present the results of extensive multiband intranight optical monitoring of BL Lacertae during 2010–2012. BL Lacertae was very active in this period and showed intense variability in almost all wavelengths. We extensively ...
Multi-wavelength study of flaring activity in BL Lac object S5 0716+714 during the 2015 outburst
(American Astronomical Society, 2015)
We present a detailed investigation of the flaring activity observed from a BL Lac object, S5 0716+714 , during its
brightest ever optical state in the second half of 2015 January. Observed almost simultaneously in the ...
Time dependent hadronic modeling of flat spectrum radio quasars
(American Astronomical Society, 2015)
We introduce a new time-dependent lepto-hadronic model for blazar emission that takes into account the radiation
emitted by secondary particles, such as pions and muons, from photo hadronic interactions. Starting from ...
H.E.S.S. reveals a lack of TeV emission from the supernova remnant Puppis A
(EDP Sciences, 2015)
Context: Puppis A is an interesting ~4 kyr-old supernova remnant (SNR) that shows strong evidence of interaction between the forward shock and a molecular cloud. It has been studied in detail from radio frequencies to ...
Discovery of variable VHE γ-ray emission from the binary system 1FGL J1018.6-5856
(EDP Sciences, 2015)
Re-observations with the HESS telescope array of the very high-energy (VHE) source HESS J1018–589 A that is coincident with the Fermi-LAT γ-ray binary 1FGL J1018.6–5856 have resulted in a source detection significance of ...
Short timescale photometric and polarimetric behavior of two BL Lacertae type objects
(EDP Sciences, 2015)
Context. Blazars are astrophysical sources whose emission is dominated by non-thermal processes, i.e. synchrotron and inverse Compton emission. Although the general picture is rather robust and consistent with observations, ...
Multiband optical-NIR variability of blazars on diverse time-scales
(Oxford University Press, 2015)
To search for optical variability on awide range of time-scales,we have carried out photometric
monitoring of two flat spectrum radio quasars, 3C 454.3 and 3C 279, plus one BL Lac,
S5 0716+714, all of which have been ...
The 2012 flare of PG 1553+113 seen with H.E.S.S. and Fermi-LAT
(IOP Publishing, 2015)
Very high energy (VHE, E > 100 GeV) γ-ray flaring activity of the high-frequency peaked BL Lac object PG 1553+113 has been detected by the H.E.S.S. telescopes. The flux of the source increased by a factor of 3 during the ...
H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud
(EDP Sciences, 2015)
G349.7+0.2 is a young Galactic supernova remnant (SNR) located at the distance of 11.5 kpc and observed across the entire electromagnetic spectrum from radio to high energy (HE; 0.1 GeV <E< 100 GeV) γ-rays. Radio and ...