Výsledky vyhledávání - "S N A Syed Zafar"

Effects of solar flares and coronal mass ejections on Earth’s horizontal magnetic field and solar wind parameters during the minimum solar cycle 24

Autor: Roslan Umar, S N A Syed Zafar, Akimasa Yoshikawa, Nor Hazmin Sabri, M H Jusoh, A. N. Dagang

Publikováno v: Monthly Notices of the Royal Astronomical Society. 504:3812-3822

Previous studies have reported that coronal mass ejections (CMEs) and solar flares lead to the development of huge storms and high-speed streams. Our aim in this paper is to investigate the response of the geomagnetic index SYM/H to the solar wind pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fb3fdf3743a65134a73a03538f167032
https://doi.org/10.1093/mnras/stab1161

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Radio Frequency Interference on Nearby Radio Astronomical Lines: Relationship between Wind Speed and Radio Signal Strength Measured at East Coast of Peninsular Malaysia

Autor: S N A Syed Zafar, Nor Hazmin Sabri, Roslan Umar, Zainol Abidin Ibrahim

Publikováno v: Sains Malaysiana. 48:183-189

The East coast of Peninsular Malaysia receives a strong wind speed, heavy rain and high humidity during the Northeast monsoon. The Malaysian Meteorological Department claims that the wind speed during the Northeast season could reach 55.56 km/h or mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9cdd4a60bf6fd397189d83f8bc7731a9
https://doi.org/10.17576/jsm-2019-4801-21

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Earth’s geomagnetic response to solar wind changes associated with solar events at low latitude regions at the TRE MAGDAS Station

Autor: S N A Syed Zafar, S Abe, T Uozumi, Roslan Umar, M H Jusoh, Akimasa Yoshikawa, Nor Hazmin Sabri

Publikováno v: IOP Conference Series: Earth and Environmental Science. 880:012009

The Sun’s magnetic activity influences disturbances that perturb interplanetary space by producing large fluxes of energetic protons, triggering geomagnetic storms and affecting the ground geomagnetic field. The effect of two solar events, namely C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b36d3f5fe2b21bbf76245139f82a33a6
https://doi.org/10.1088/1755-1315/880/1/012009

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A statistical analysis of the relationship between Pc4 and Pc5 ULF waves, solar winds and geomagnetic storms for predicting earthquake precursor signatures in low latitude regions

Autor: S Abe, Roslan Umar, T Uozumi, Akimasa Yoshikawa, Nor Hazmin Sabri, S N A Syed Zafar, M H Jusoh

Publikováno v: IOP Conference Series: Earth and Environmental Science. 880:012010

Short-term earthquake forecasting is impossible due to the seismometer’s limited sensitivity in detecting the generation of micro-fractures prior to an earthquake. Therefore, there is a strong desire for a non-seismological approach, and one of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12d3d013edd8e570c2d5c4d03fc7914c
https://doi.org/10.1088/1755-1315/880/1/012010

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Behaviour of Geomagnetic storm, horizontal geomagnetic field and solar wind parameters during solar flare and CMEs event

Autor: S.N. Hazmin, Roslan Umar, M H Jusoh, M A M Adzni, S N A Syed Zafar, A. N. Dagang

Publikováno v: Journal of Physics: Conference Series. 1768:012003

Space weather is driven by solar activities by pulling out the variety of phenomenon such as solar flare and coronal mass ejection (CMEs). It been discovered the CMEs and solar flares have causes disturbance at near-Earth space. This paper is to exam

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8678597fe9aeae6d40095fa7fc505a2a
https://doi.org/10.1088/1742-6596/1768/1/012003

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Effect of Humidity on Tropospheric Received Signal Strength (RSS) in Ultra-High Frequency (UHF) Band

Autor: S N A Syed Zafar, Wan Azani Mustafa, Roshidah Mat, Azman Omar, Sabri Ahmad, Nor Hazmin Sabri, Roslan Umar

Publikováno v: Journal of Physics: Conference Series. 1529:042048

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9780c7bee38f6bbdda800fd15e062989
https://doi.org/10.1088/1742-6596/1529/4/042048

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Spectrum monitoring: Radio Frequency Interferences (RFI) profile for hydroxyl (OH) lines window

Autor: Mohd Khairul Amri Kamarudin, N.H. Zafar, S N A Syed Zafar, Zainol Abidin Ibrahim, Roslan Umar

Publikováno v: Journal of Fundamental and Applied Sciences; Vol 9, No 2S (2017): Special Issue; 147-156

It was crucial to monitor the Radio Frequency Interference (RFI) in order to conduct the radio astronomical research with very minimum RFI. These RFI will be distorted the astronomical data. In this work, we have investigated the RFI strength (dBm) a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2de87bb69b69e0284bebc55b7a70af5c
https://www.ajol.info/index.php/jfas/article/view/165044

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Northeast Monsoon Effect on Ultra High Frequency (UHF) Signal Attenuation at Kusza Observatory

Autor: Roshidah Mat, Roslan Umar, Nor Hazmin Sabri, S N A Syed Zafar

Publikováno v: Journal of Physics: Conference Series. 1152:012009

Northeast (NE) monsoon season in Malaysia was developed due to conjunction with cold air outbreaks from Siberia produce heavy rains, strong wind, and high humidity. This weather condition can affect the radio signal transmission which is crucial to s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0bf130afd02b918d15c2c10827d29bc4
https://doi.org/10.1088/1742-6596/1152/1/012009

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