Search for the optimal smoothing method to improve S/N in cosmic maser spectra
In this article, a number of smoothing methods were investigated to enhance the signal-to-noise (S/N) ratio of diverse methanol maser spectral data, encompassing variations in signal strength, multiplicity of peaks, and spectral complexity. The study aimed to improve the accuracy and reliability of...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-06-01
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| Series: | Open Astronomy |
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| Online Access: | https://doi.org/10.1515/astro-2025-0012 |
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| author | Egliene Anete Aberfelds Artis |
| author_facet | Egliene Anete Aberfelds Artis |
| author_sort | Egliene Anete |
| collection | DOAJ |
| description | In this article, a number of smoothing methods were investigated to enhance the signal-to-noise (S/N) ratio of diverse methanol maser spectral data, encompassing variations in signal strength, multiplicity of peaks, and spectral complexity. The study aimed to improve the accuracy and reliability of astronomical measurements obtained with Irbene radio telescopes RT-16 and RT-32 at the Ventspils International Radio Astronomy Center. Comparing eleven different smoothing techniques, including moving average, Gaussian, Hanning, among others, the Savitzky–Golay smoothing method is identified as the optimal choice. The evaluation criteria included the preservation of spectral features, reduction of noise artifacts, and enhancement of S/N ratio metrics. The Savitzky–Golay method outperformed other techniques by effectively balancing noise reduction with the preservation of spectral details crucial for maser emission analysis. |
| format | Article |
| id | doaj-art-5a54f5034cfa4d67ad8d03a858d5c94c |
| institution | Kabale University |
| issn | 2543-6376 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Astronomy |
| spelling | doaj-art-5a54f5034cfa4d67ad8d03a858d5c94c2025-08-20T03:45:45ZengDe GruyterOpen Astronomy2543-63762025-06-013415699571410.1515/astro-2025-0012Search for the optimal smoothing method to improve S/N in cosmic maser spectraEgliene Anete0Aberfelds Artis1Engineering Research Institute “Ventspils International Radio Astronomy Center”, Ventspils University of Applied Sciences, Inzenieru Str. 101, Ventspils LV-3601, LatviaEngineering Research Institute “Ventspils International Radio Astronomy Center”, Ventspils University of Applied Sciences, Inzenieru Str. 101, Ventspils LV-3601, LatviaIn this article, a number of smoothing methods were investigated to enhance the signal-to-noise (S/N) ratio of diverse methanol maser spectral data, encompassing variations in signal strength, multiplicity of peaks, and spectral complexity. The study aimed to improve the accuracy and reliability of astronomical measurements obtained with Irbene radio telescopes RT-16 and RT-32 at the Ventspils International Radio Astronomy Center. Comparing eleven different smoothing techniques, including moving average, Gaussian, Hanning, among others, the Savitzky–Golay smoothing method is identified as the optimal choice. The evaluation criteria included the preservation of spectral features, reduction of noise artifacts, and enhancement of S/N ratio metrics. The Savitzky–Golay method outperformed other techniques by effectively balancing noise reduction with the preservation of spectral details crucial for maser emission analysis.https://doi.org/10.1515/astro-2025-0012smoothingradioastronomyspectraconvolution |
| spellingShingle | Egliene Anete Aberfelds Artis Search for the optimal smoothing method to improve S/N in cosmic maser spectra Open Astronomy smoothing radioastronomy spectra convolution |
| title | Search for the optimal smoothing method to improve S/N in cosmic maser spectra |
| title_full | Search for the optimal smoothing method to improve S/N in cosmic maser spectra |
| title_fullStr | Search for the optimal smoothing method to improve S/N in cosmic maser spectra |
| title_full_unstemmed | Search for the optimal smoothing method to improve S/N in cosmic maser spectra |
| title_short | Search for the optimal smoothing method to improve S/N in cosmic maser spectra |
| title_sort | search for the optimal smoothing method to improve s n in cosmic maser spectra |
| topic | smoothing radioastronomy spectra convolution |
| url | https://doi.org/10.1515/astro-2025-0012 |
| work_keys_str_mv | AT eglieneanete searchfortheoptimalsmoothingmethodtoimprovesnincosmicmaserspectra AT aberfeldsartis searchfortheoptimalsmoothingmethodtoimprovesnincosmicmaserspectra |