Ayazhan Temirzhanova

Ms. Ayazhan Temirzhanova


Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 April 2026 in Universe
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SSSaule Shomshekova
Saule Shomshekova
GAGauhar Aimanova
Gauhar Aimanova
NHNazim Huseynov
Nazim Huseynov
ATAyazhan Temirzhanova
Ayazhan Temirzhanova
DNDiana Makhmutovna Nasirova
Diana Makhmutovna Nasirova
ASAlexander Serebryanskiy
Alexander Serebryanskiy
In this work, the light curve of the Seyfert galaxy Mrk 6 constructed from photometric observations in the B, V, and Rc filters over the period from 5 April 2016 to 1 February 2026 is presented and analyzed. Over the entire monitoring interval (2016–2026), the variability amplitude of the light curve reaches ΔB=1.9 mag, ΔV=1.5 mag, and ΔRc=1.4 mag. During 2024–2026, the galaxy exhibits synchronous photometric variability in the B, V, and Rc filters with an amplitude of ∼0.3 mag. The study also uses spectroscopic observations obtained on 15 and 22 November 2025 and 16 February 2026 at the Shamakhy Astrophysical Observatory (Azerbaijan), as well as on 9 January 2026 at the Fesenkov Astrophysical Institute (Kazakhstan). The fluxes in the Hβ emission line were calibrated using the [O III] λ5007 Å line, ensuring consistent relative calibration of the spectral data. A comparison of the optical spectra reveals a pronounced transformation of the Hβ line profile between November 2025 and January 2026. The broad component, clearly present in November 2025, becomes strongly suppressed and nearly disappears in January 2026, while the narrow emission lines remain stable. This behavior is consistent with a changing-look transition, indicating a temporary weakening of the broad-line region emission. The radius of the broad-line region RBLR was taken to be equal to the average time delays (lags), amounting to ≈20 light days for the Hβ emission and ≈28 light days for the Hα.

30 September 2025 in Bulletin of Toraighyrov University. Physics & Mathematics series
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Journal Article
Closed access
DNDiana Makhmutovna Nasirova
Diana Makhmutovna Nasirova
ӘАӘ. Ә. Ақжолова
Ә. Ә. Ақжолова
АГА. 3. Газизова
А. 3. Газизова
ATAyazhan Temirzhanova
Ayazhan Temirzhanova
АПА. Пахирдинова
А. Пахирдинова
В данной работе исследуется влияние ядерных реакций, протекающих в условиях вырожденной материи, на установление термодинамического равновесия в недрах нейтронных звёзд. Особое внимание уделено условиям, при которых эти реакции становятся термодинамически возможными, а также их влиянию на химический состав и энергетический баланс вырожденной материи. Рассматриваются как реакции β-распада и электронного захвата, так и термоядерные процессы, протекающие в слоях аккрецирующей материи. Показано, что электронный захват становится возможным при достижении плотности порядка , когда химический потенциал электронов повышает порог реакции. При плотностях выше этого значения скорость реакции возрастает экспоненциально, и β-равновесие устанавливается за характерное время менее нескольких секунд. Также дается оценка временам релаксации и их зависимости от плотности и температуры. Показано, что ядерные процессы оказывают значительное влияние на состав вещества и тепловую эволюцию звезды, участвуя в перераспределении энергии и частиц. Работа основана на аналитических оценках и обзорной интеграции современных результатов численного моделирования. Представленные оценки химического потенциала, времени релаксации и условий равновесия, подтверждают ключевую роль электронного захвата в физике внутренней корки компактных звёзд. Ключевые слова: реакции электронного захвата, компактные звезды, химический потенциал, термодинамическое равновесие, ядерные процессы.

18 June 2026 in Recent Contributions to Physics
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Journal Article
Closed access
ATAyazhan Temirzhanova
Ayazhan Temirzhanova
IRInna Reva
Inna Reva
DNDiana Makhmutovna Nasirova
Diana Makhmutovna Nasirova
SSSaule Shomshekova
Saule Shomshekova
This paper presents the results of new B, V, and Rc photometric observations of the Seyfert 1.5 galaxy NGC 7469, conducted from October 2025 to January 2026 at the Tian Shan Astronomical Observatory. The primary goal of the study was to monitor the state of the active galactic nucleus (AGN) following a significant optical outburst recorded in late 2024. Observations were performed using a 1-meter Carl Zeiss telescope and processed with differential CCD photometry techniques using a 7″ aperture. The results show that during the study period, the galaxy remained in a state of relative photometric stability with a mean V-band magnitude of approximately 13.2–13.3. The recorded variability amplitude was ~ 0.12 mag, which significantly exceeds the photometric errors (σV ≈ 0.007). Comparison with historical data indicates that while the rapid brightness increase of 2024 has ceased, the object has stabilized at a luminosity level notably higher than the minimum observed in 2021. This stability at an elevated state confirms the persistence of a new active phase of the nucleus. The findings provide critical data for understanding the duty cycle of accretion processes and the interaction between the AGN and the surrounding starburst ring in LIRG systems.