Zobrazeno 1 - 10
of 9 180
pro vyhledávání: '"Medvedev, P"'
We report the discovery of a short, large amplitude X-ray flare from AT2019vcb (aka Tormund), a tidal disruption event at $z=0.088$. The discovery is based on the data from the SRG/eROSITA X-ray telescope which happened to observe the source seven mo
Externí odkaz:
http://arxiv.org/abs/2409.16908
Autor:
Ma, KeYuan, Roychowdhury, Subhajit, Noky, Jonathan, Borrmann, Horst, Schnelle, Walter, Shekhar, Chandra, Medvedev, Sergey A., Felser, Claudia
RhBi$_2$ is a polymorphic system that exhibits two distinct phases. RhBi$_2$ in the triclinic phase has been identified as a weak topological insulator with a van Hove singularity point close to the Fermi energy. Thus, triclinic RhBi$_2$ is expected
Externí odkaz:
http://arxiv.org/abs/2409.06358
Autor:
Mu, Qing-Ge, Schnelle, Walter, Li, Guo-Wei, Bormann, Horst, Felser, Claudia, Medvedev, Sergey
We report superconductivity in the ternary compound IrBi$_{0.8}$Te$_{1.2}$ with critical temperature 1.7 K. The replacement of Bi by Te leads to the metallic conductivity in contrast to the semiconducting parent compound IrBiTe. The superconductivity
Externí odkaz:
http://arxiv.org/abs/2409.05649
We consider the overfitting behavior of minimum norm interpolating solutions of Gaussian kernel ridge regression (i.e. kernel ridgeless regression), when the bandwidth or input dimension varies with the sample size. For fixed dimensions, we show that
Externí odkaz:
http://arxiv.org/abs/2409.03891
Autor:
Kolbin, A. I., Karpova, A. V., Suslikov, M. V., Bikmaev, I. F., Gilfanov, M. R., Khamitov, I. M., Shibanov, Yu. A., Zyuzin, D. A., Beskin, G. M., Plokhotnichenko, V. L., Gutaev, A. G., Karpov, S. V., Lyapsina, N. V., Medvedev, P. S., Sunyaev, R. A., Kirichenko, A. Yu., Gorbachev, M. A., Irtuganov, E. N., Gumerov, R. I., Sakhibullin, N. A., Shablovinskaya, E. S., Malygin, E. A.
SRGe J194401.8+284452 is the brightest point-like X-ray object within the position uncertainty ellipse of an unidentified $\gamma$-ray source 4FGL J1943.9+2841. We performed multi-wavelength spectral and photometric studies to determine its nature an
Externí odkaz:
http://arxiv.org/abs/2408.14136
Autor:
Ozhiganov, Maksim, Medvedev, Mikhail, Karteyeva, Varvara, Nakibov, Ruslan, Sapunova, Uliana, Krushinsky, Vadim, Stepanova, Ksenia, Tryastsina, Anastasia, Gorkovenko, Aleksandr, Fedoseev, Gleb, Vasyunin, Anton
HCN molecules serve as an important tracer for chemical evolution of elemental nitrogen in the regions of star and planet formation. This is largely explained by the fact that N atoms and N$_2$ molecules are poorly accessible for the observation in t
Externí odkaz:
http://arxiv.org/abs/2408.08166
Every continuous map between two compact Riemannian manifolds is homotopic to a harmonic map (HM). We show that a similar situation holds for continuous maps between a post-critically finite (p.c.f.) fractal and a circle. Specifically, we provide a g
Externí odkaz:
http://arxiv.org/abs/2407.16817
Autor:
Medvedev, Mikhail V., Loeb, Abraham
Dark matter particles were suggested to have an electric charge smaller than the elementary charge unit $e$. The behavior of such a medium is similar to a collisionless plasma. In this paper, we set new stringent constraints on the charge and mass of
Externí odkaz:
http://arxiv.org/abs/2406.15750
Autor:
Nikishev, N., Medvedev, N.
Although polymers are widely used in laser-irradiation research, their microscopic response to high-intensity ultrafast XUV or X-ray irradiation is still largely unknown. Here we comparatively study homologous series of alkenes. XTANT-3 hybrid simula
Externí odkaz:
http://arxiv.org/abs/2406.12484
Autor:
Karpikova, Polina, Spiridonov, Andrei, Vorontsova, Anna, Yaschenko, Anastasia, Radionova, Ekaterina, Medvedev, Igor, Limonov, Alexander
Self-portraits captured from a short distance might look unnatural or even unattractive due to heavy distortions making facial features malformed, and ill-placed head poses. In this paper, we propose SUPER, a novel method of eliminating distortions a
Externí odkaz:
http://arxiv.org/abs/2406.12700