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arxiv.org arXiv
arxiv.org › abs › astro-ph › 9909380v1
Arecibo spectra of the mainline OH maser emission from U Her over more than a decade show variations of the OH emission over these time scales. These observations are combined with high spatial resolu...
arxiv.org arXiv
arxiv.org › abs › 1602.02933v1
We present the optical spectroscopic study based on 41 spectra of 4 Her and 32 spectra of 88 Her, obtained over a period of 6 months. We estimate the rotational velocity of these stars from He{\sc i} ...
arxiv.org arXiv
arxiv.org › abs › 1201.5519v1
We have obtained the first estimates of the masses of the components of the Her X-1/HZ Her X-ray binary system taking into account non-LTE effects in the formation of the H_gamma absorption line: mx=1...
arxiv.org arXiv
arxiv.org › abs › 2103.01820v4
Regular variations of the pulse period of Her X-1 with X-ray flux observed by Fermi-GBM are examined. We argue that these regular variations result from the free precession of the neutron star in Her ...
arxiv.org arXiv
arxiv.org › abs › 2305.01197v2
I observed the very fast nova V838 Her (Nova Her 1991, optical peak at 5-5.4 mag) during the fading phase of the nova eruption in 1991. I detected eclipses, for the first time in the world in any nova...
arxiv.org arXiv
arxiv.org › abs › 1102.3761v1
V446 Her is the best example of an old nova which has developed dwarf nova eruptions in the post-nova state. We report on observed properties of the long-term light curve of V446 Her, using photometry...
arxiv.org arXiv
arxiv.org › abs › 0708.1554v1
Let (M,ω) be a compact symplectic manifold, and φbe a symplectic diffeomorphism on M, we define a Floer-type homology FH_*(φ) which is a gen- eralization of Floer homology for symplectic fixed poin...
arxiv.org arXiv
arxiv.org › abs › 2404.01928v1
The first photometric light curve investigation of the NSVS 8294044, V1023 Her, and V1397 Her binary systems is presented. We used ground-based observations for the NSVS 8294044 system and Transiting ...
arxiv.org arXiv
arxiv.org › abs › 0808.2228v6
Let $(X,ω)$ be a compact symplectic manifold, $L$ be a Lagrangian submanifold and $V$ be a codimension 2 symplectic submanifold of $X$, we consider the pseudoholomorphic maps from a Riemann surface w...
arxiv.org arXiv
arxiv.org › abs › 2508.07646v1
While defenses against single-turn jailbreak attacks on Large Language Models (LLMs) have improved significantly, multi-turn jailbreaks remain a persistent vulnerability, often achieving success rates...