33 citations · 119 across the 18 of their papers we have counts for
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Broad-band analysis of X-ray pulsar 2S 1845024
Armin Nabizadeh, Sergey S. Tsygankov, Sergey V. Molkov +4
We present results of detailed investigation of the poorly studied X-ray pulsar 2S 1845024 based on the data obtained with observatory during the type I outburst in 201…
First detection of VHE gamma-ray emission from TXS~1515--273, study of its X-ray variability and spectral energy distribution
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +196
We report here on the first multi-wavelength (MWL) campaign on the blazar TXS 1515-273, undertaken in 2019 and extending from radio to very-high-energy gamma rays (VHE). Up until n…
X-ray reprocessing in accreting pulsar GX 301-2 observed with Insight-HXMT
L. Ji, V. Doroshenko, V. Suleimanov +100
We investigate the absorption and emission features in observations of GX 301-2 detected with Insight-HXMT/LE in 2017-2019. At different orbital phases, we found prominent Fe Kalph…
Testing two-component models on very-high-energy gamma-ray emitting BL Lac objects
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +201
Context. It has become evident that one-zone synchrotron self-Compton models are not always adequate for very-high-energy (VHE) gamma-ray emitting blazars. While two-component mode…
Spectral evolution of X-ray pulsar 4U 1901+03 during the 2019 outburst based on Insight-HXMT and NuSTAR observations
Armin Nabizadeh, Sergey S. Tsygankov, Long Ji +7
We report on a detailed spectral analysis of emission from X-ray pulsar 4U 1901+03 using data obtained by the Insight-HXMT and NuSTAR observatories during the 2019 outburst of the…
Insight-HXMT insight into switch of the accretion mode: the case of the X-ray pulsar 4U 1901+03
Y. L. Tuo, L. Ji, S. S. Tsygankov +116
We use the In data collected during the 2019 outburst from X-ray pulsar 4U 1901+03 to complement the orbital parameters reported by Fermi/GBM. Using the Insight-HXMT, we examine th…
Discovery of a retrogradely rotating neutron star in the X-ray pulsar GX 3012
Juhani Mönkkönen, Victor Doroshenko, Sergey S. Tsygankov +3
We report on the analysis of the spin evolution of a slow X-ray pulsar GX 3012 along the orbit using long-term monitoring by Fermi/GBM. Based on the observationally confirmed ac…
Switches between accretion structures during flares in 4U 1901+03
L. Ji, L. Ducci, A. Santangelo +120
We report on our analysis of the 2019 outburst of the X-ray accreting pulsar 4U 1901+03 observed with Insight-HXMT and NICER. Both spectra and pulse profiles evolve significantly i…
X-ray properties of dwarf nova EY Cyg and the companion star using an XMM-Newton observation
Armin Nabizadeh, Solen Balman
We present the X-ray analysis of dwarf nova EY Cyg using the 45 ks \textit{XMM-Newton} observatory archival data obtained in quiescence. We find orbital modulations in X-rays. We s…
NuSTAR observations of the wind-fed X-ray pulsar GX 301--2 during an unusual spin-up event
Armin Nabizadeh, Juhani Mönkkönen, Sergey S. Tsygankov +3
We report on \textit{NuSTAR} observations of the well-known wind-accreting X-ray pulsar \source\ during a strong spin-up episode that took place in January-March 2019. A high lumin…
Properties of the transient X-ray pulsar Swift J1816.7--1613 and its optical companion
Armin Nabizadeh, Sergey S. Tsygankov, Dmitrij I. Karasev +4
We present results of investigation of the poorly studied X-ray pulsar Swift J1816.7--1613 during its transition from the type I outburst to the quiescent state. Our studies are ba…