A5100030136- Astrophysical Phenomena and Observations
- Astronomical Observations and Instrumentation
- Mechanics and Biomechanics Studies
- Pulsars and Gravitational Waves Research
- Astrophysics and Star Formation Studies
We aim at characterizing the population of low-luminosity X-ray sources in Galactic plane by studying their spectra and periodic signals light curves. are performing an survey disk using XMM-Newton, source XMMU J173029.8-330920 was serendipitously discovered our campaign. performed a follow-up observation pre-approved NuSTAR target opportunity time. used various phenomenological models xspec for spectral modeling. also computed Lomb-Scargle periodogram to search periodicity. A Monte Carlo...
Aims. We aim to characterise the population of low-luminosity X-ray sources in Galactic plane by studying their spectra and periodic signals light curves. Methods. are performing an survey disc using XMM-Newton , source XMMU J173029.8–330920 was serendipitously discovered our campaign. performed a follow-up observation pre-approved NuSTAR target opportunity time. used various phenomenological models XSPEC for spectral modelling. also computed Lomb-Scargle periodogram search periodicity. A...
We present the first $\textit{NuSTAR}$ X-ray observation of EF Eri, a well-known polar system. The was conducted in conjunction with $\textit{NICER}$, shortly after Eri entered high accretion state following an unprecedented period low activity lasting 26 years since 1997. detected hard emission up to 50 keV flux $1.2\times10^{-10}$ ergs s$^{-1}$ cm$^{-2}$ ($3\rm{-}50 keV$). Folded lightcurves exhibit single peak $\sim65\%$ spin modulation throughout $3\rm{-}50$ band. found no evidence QPO...