Serim, Muhammed Miraç

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Profile URL
https://hdl.handle.net/20.500.14411/8204
Name Variants
S.,Muhammed Mirac
S., Muhammed Mirac
Serim, Muhammed Mirac
M., Serim
Muhammed Mirac, Serim
S.,Muhammed Miraç
M.,Serim
Serim,M.M.
Muhammed Miraç, Serim
Serim, Muhammed Miraç
M.M.Serim
Serim, M. M.
Job Title
Doktor Öğretim Üyesi
Email Address
mirac.serim@atilim.edu.tr
Main Affiliation
Department of Electrical & Electronics Engineering
Status
Former Staff
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WoS Researcher ID

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Scholarly Output

2

Articles

2

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0/0

Supervised MSc Theses

0

Supervised PhD Theses

0

WoS Citation Count

25

Scopus Citation Count

22

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0

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0

WoS Citations per Publication

12.50

Scopus Citations per Publication

11.00

Open Access Source

2

Supervised Theses

0

JournalCount
Monthly Notices of the Royal Astronomical Society2
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Subject: Accretion Discs

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    Article
    Citation - WoS: 9
    Citation - Scopus: 7
    Pulse Frequency Fluctuations of Persistent Accretion Powered Pulsars
    (Oxford University Press, 2023) Serim,D.; Serim,M.M.; Baykal,A.
    In this study, we examine the long-term torque noise fluctuations of persistent X-ray binaries Her X-1, Vela X-1, GX 301-2, Cen X-3, 4U 1538-53, OAO 1657-415, and 4U 1626-67 using the historical pulse frequency measurements provided by CGRO/BATSE and Fermi/GBM. We find that known disc-fed sources exhibit a 1/ω2 red noise component in their power density spectra which is saturated over long time-scales. On the other hand, wind-fed sources form a clear white noise component, and the wind-fed sources with occasional transient disc formation imprint 1/ω type flicker noise. We discuss their long-term timing noise properties based on the models to describe the power density spectrum of pulse frequency derivative fluctuations in terms of monochromatic and coloured noise processes. Furthermore, we investigate the relation between measured timing noise strengths and other independently measured physical parameters. Despite the low number of sample sources, we suggest that the noise strengths of these sources are correlated with their luminosities and uncorrelated with their magnetic field strengths, implying that the dominant noise-generating mechanism is accretion. © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.