Zobrazeno 1 - 10
of 46 378
pro vyhledávání: '"XMM-NEWTON"'
Autor:
La Palombara, N., Sidoli, L., Mereghetti, S., Israel, G. L., Esposito, P., Milano, INAF - IASF, Roma, INAF - OA, Pavia, IUSS
The persistent BeXRBs are a class of High-Mass X-ray Binaries (HMXRBs), which are characterized by persistent low X-ray luminosities ($L_{\rm X} \sim 10^{34}$ erg s$^{-1}$) and wide ($P_{\rm orb} >$ 30 d), almost circular orbits. In these sources the
Externí odkaz:
http://arxiv.org/abs/2411.14966
A0538-66 is a neutron star/Be X-ray binary located in the Large Magellanic Cloud and, since its discovery in the seventies, it showed a peculiar behavior which makes it a unique object in the high-mass X-ray binaries scene: the extremely eccentric or
Externí odkaz:
http://arxiv.org/abs/2410.18606
In the present paper, we analyze three energetic X-ray flares from the active RS CVn binary HR 1099 using data obtained from XMM-Newton. The flare duration ranges from 2.8 to 4.1 h, with e-folding rise and decay times in the range of 27 to 38 minutes
Externí odkaz:
http://arxiv.org/abs/2411.11339
We present X-ray spectroscopy of the SU UMa-type dwarf nova (DN) Z Cha using the EPIC and RGS instruments onboard the XMM-Newton Observatory. The quiescent system can be modeled by collisional equilibrium or nonequilibrium plasma models, yielding a k
Externí odkaz:
http://arxiv.org/abs/2410.14526
Autor:
Bhatta, Gopal, Chaudhary, Suvas C., Dhital, Niraj, Adhikari, Tek P., Mohorian, Maksym, Pánis, Radim, Neupane, Raghav, Maharjan, Yogesh Singh
Blazars, a class of active galactic nuclei (AGN) powered by supermassive black holes, are known for their remarkable variability across multiple timescales and wavelengths. With advancements in both ground- and space-based telescopes, our understandi
Externí odkaz:
http://arxiv.org/abs/2410.01278
Autor:
Mukhin, Andrey, Krivonos, Roman, Bikmaev, Ilfan, Gorbachev, Mark, Khamitov, Irek, Sazonov, Sergey, Gilfanov, Marat, Sunyaev, Rashid
In this work, we studied X-ray source SRGe J021932.4$-$040154 (SRGe J02193), which we associated with a single X-ray active star of spectral class G2V$-$G4V and the rotational period $\rm P_{rot} < 9.3$ days. Additional analysis of TESS light-curves
Externí odkaz:
http://arxiv.org/abs/2408.07442
EXO 0748-676 is a well-studied, high-inclination, dipping, and eclipsing neutron star low-mass X-ray binary that has recently emerged from 16 years of quiescence into a new outburst. We present results from a 55.5 ks of XMM-Newton observation, focusi
Externí odkaz:
http://arxiv.org/abs/2408.02715
Autor:
Laurenti, M., Tombesi, F., Vagnetti, F., Piconcelli, E., Guainazzi, M., Vignali, C., Paolillo, M., Middei, R., Bongiorno, A., Zappacosta, L.
Publikováno v:
A&A 689, A337 (2024)
Our understanding of highly accreting AGNs is hampered by the lack of a complete systematic investigation in terms of their main spectral and variability properties, and by the relative paucity of them in the local Universe, especially those powered
Externí odkaz:
http://arxiv.org/abs/2407.12904
Publikováno v:
A&A 690, A383 (2024)
The evaporation and the chemistry of the atmospheres of warm and hot planets are strongly determined by the high-energy irradiation they receive from their parent stars. This is more crucial among young extra-solar systems, due to the high activity o
Externí odkaz:
http://arxiv.org/abs/2409.07229
Autor:
Biswas, Ayan, Wade, Gregg A., Chandra, Poonam, Petit, Veronique, Das, Barnali, Shultz, Matthew E.
The $\epsilon$ Lupi A (HD 136504) system stands out among magnetic massive binaries as the only short-period binary system in which both components have detectable magnetic fields. The proximity of the magnetospheres of the components leads to magnet
Externí odkaz:
http://arxiv.org/abs/2408.07001