416 citations
- Kyoto UniversityJP49 papers
- National Astronomical Observatory of JapanJP44 papers
- Crimean Astrophysical ObservatoryUA30 papers
- British Astronomical AssociationGB24 papers
- Vihorlat ObservatorySK22 papers
- Nordic Optical TelescopeES21 papers
- American Association of Variable Star ObserversUS20 papers
- Hiroshima UniversityJP20 papers
- The University of TokyoJP19 papers
- University of TurkuFI18 papers
- Kazan Federal UniversityRU17 papers
- Lomonosov Moscow State UniversityRU17 papers
8 papers · 1 filter
Blazar spectral variability as explained by a twisting inhomogeneous jet
C. M. Raiteri, M. Villata
Blazar emission is dominated by non-thermal radiation from a relativistic jet pointing toward us, therefore undergoing Doppler beaming. This is responsible for flux enhancement and…
A relative, strictly ergodic model theorem for infinite measure-preserving systems
Hisatoshi Yuasa
We prove a model theorem for factor maps between ergodic, infinite measure-preserving systems.
Stochastic modeling of multiwavelength variability of the classical BL Lac object OJ 287 on timescales ranging from decades to hours
A. Goyal, L. Stawarz, S. Zola +109
We present the results of our power spectral density analysis for the BL Lac object OJ\,287, utilizing the {\it Fermi}-LAT survey at high-energy -rays, {\it Swift}-XRT in X-rays…
Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IX: The Ninth Year (2016-2017)
Taichi Kato, Keisuke Isogai, Franz-Josef Hambsch +76
Continuing the project described by Kato et al. (2009, arXiv:0905.1757), we collected times of superhump maxima for 127 SU UMa-type dwarf novae observed mainly during the 2016--201…
Weak Metallic Emission Lines in Early B-Type Stars
Kozo Sadakane, Masayoshi Nishimura
Previously unrecognized weak emission lines originating from high excitation states of Si II (12.84 eV) and Al II (13.08 eV) are detected in the red region spectra of slowly rotati…
Rapid Optical Variations Correlated with X-rays in the 2015 Second Outburst of V404 Cygni (GS 2023338)
Mariko Kimura, Taichi Kato, Keisuke Isogai +24
We present optical multi-colour photometry of V404 Cyg during the outburst from December, 2015 to January, 2016 together with the simultaneous X-ray data. This outburst occurred le…