Journal of Astrophysics and Astronomy最新文献_第2页

Characterising ionospheric TEC gradients over Nigerian longitudes during increasing phase of solar cycle #24 第24太阳周期增加阶段尼日利亚经度电离层TEC梯度的特征

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-09-22 DOI: 10.1007/s12036-026-10182-z

Oladipo E. Abe, Jesufeyifunmi S. Olawuyi, Mary O. Fakomiti, Olakunle L. Ojo, Olugbenga O. Olumodimu, Oluwatumilara A. Abimbola, Gbenga A Akinyemi, Ojo Abayomi Fagbuagun, Jonathan O. Chukwu

{"title":"Characterising ionospheric TEC gradients over Nigerian longitudes during increasing phase of solar cycle #24","authors":"Oladipo E. Abe, Jesufeyifunmi S. Olawuyi, Mary O. Fakomiti, Olakunle L. Ojo, Olugbenga O. Olumodimu, Oluwatumilara A. Abimbola, Gbenga A Akinyemi, Ojo Abayomi Fagbuagun, Jonathan O. Chukwu","doi":"10.1007/s12036-026-10182-z","DOIUrl":"10.1007/s12036-026-10182-z","url":null,"abstract":"<div>Over the last decades, there has been growing interest in the characterization of ionospheric total electron content (TEC) for the effective planning, implementation and optimum performance of the satellite-based technology applications. This paper essentially examines the ionospheric TEC gradients using Global Navigation Satellite Systems (GNSS) data during the increasing phase of solar cycle 24, years 2011-2013. The data used were mined from the African GNSS Network of stations (AFREF, www.afrefdata.org) and Nigeria GNSS ground-based Network Observation Stations (NIGNET) located within the belt of the Equatorial Ionization Anomaly (EIA) region. The ionospheric TEC gradients were analysed during distinct geomagnetic conditions. The monthly mean results have shown that the magnitude of ionospheric TEC gradients are higher at equinoctial months and December solstices when compared with other solstices months and also during the disturbed conditions when the ionospheric storm has positive phase leading to an increase in the ionization, while the ionospheric TEC gradients are lower during the quiet conditions when the ionospheric storm is in the negative phase and this is evidenced in the decreased ionization at the disturbed conditions. The study records that the magnitude of ionospheric gradients increases with solar activities and could be as high as 300 mm/km within the Nigeria longitudes during the high of solar activity and the conjugate distance is not ono-to-one relation to the magnitude ionospheric gradient observe spatially. The results of the bounding errors revealed that the ionospheric TEC gradients are not well bounded over the Nigerian longitudes during moderate to high solar activities, which could pose a serious challenge to the seamless GNSS critical applications in terms of navigation and positioning.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149034432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of infinitesimal mass near equilibrium points in planar equilateral restricted four-body problem under magnetic force 磁力作用下平面等边受限四体问题平衡点附近的无穷小质量动力学

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-09-17 DOI: 10.1007/s12036-026-10178-9

Mohd. Arif, Laxmi Kant, Jai Kumar

{"title":"Dynamics of infinitesimal mass near equilibrium points in planar equilateral restricted four-body problem under magnetic force","authors":"Mohd. Arif, Laxmi Kant, Jai Kumar","doi":"10.1007/s12036-026-10178-9","DOIUrl":"10.1007/s12036-026-10178-9","url":null,"abstract":"<div>This study examines the impact of magnetic force on a particle of negligible mass within the planar equilateral restricted four-body problem (PERFBP), considering one of the three primary bodies as a dipole. We derived equations that describe the motion of the particle. The parametric evolution of position, existence, and nature of equilibrium points, as well as their linear stability, is performed numerically. Our numerical findings indicate that the magnetic moment, (lambda _1), has a significant impact on both the existence and location of the equilibrium points. We found that for a given value of mass parameter (mu ), the number of equilibrium points varies as (lambda _1) increases, reaching a maximum of five after a specific increment. Beyond this point, the number of equilibrium points stabilizes and remains constant. We also observed that as the value of (mu ) increases, the variation in the number of equilibrium points stops at lower (lambda _1) values before converging to the constant value of five. It is observed that the motion of the particle is periodic around the primary body (P_1) and is bounded as well as chaotic around the primary bodies (P_2) and (P_3). In some cases, the motion is quasi-periodic, while in other instances, it is chaotic and escapes to infinity when the particle starts near (L_6) and (L_7). All equilibrium points were found to be unstable in the Lyapunov sense. We conducted numerical simulations to analyse the configuration of zero-velocity curves for the particle. The model provides a relevant framework for understanding the dynamics of a charged particle or spacecraft in the vicinity of the Sun–Jupiter–Trojan asteroid system.\u0000</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observations of high galactic latitude line and continuum emission (912 - 1600 Å) with new horizons 用新视界观测高星系纬度线和连续辐射（912 - 1600 Å）

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-09-16 DOI: 10.1007/s12036-026-10185-w

Jayant Murthy, James Overduin, Seth Redfield, J. Michael Shull, Joel Wm. Parker, Jon P. Pineau, Anne J. Verbiscer, Richard C. Henry

{"title":"Observations of high galactic latitude line and continuum emission (912 - 1600 Å) with new horizons","authors":"Jayant Murthy, James Overduin, Seth Redfield, J. Michael Shull, Joel Wm. Parker, Jon P. Pineau, Anne J. Verbiscer, Richard C. Henry","doi":"10.1007/s12036-026-10185-w","DOIUrl":"10.1007/s12036-026-10185-w","url":null,"abstract":"<div>We present observations of the cosmic ultraviolet background (CUVB) from 912 – 1600 Å using the Stem aperture of the Alice spectrograph on the New Horizons spacecraft at 56 AU from the Sun, providing a spectral resolution of 9 Å for diffuse sources. We detect emission lines of C III (977 Å) and C IV (1548/1551 Å) at the (3 sigma ) level with strengths of (4200 pm 1500) and (4100 pm 1200) ph cm(^{-2}) s(^{-1}) sr(^{-1}), respectively, and a marginal detection of O VI (1032/1038 Å) at (1400 pm 1300) ph cm(^{-2}) s(^{-1}) sr(^{-1}). We report a (3 sigma ) detection of an emission line at 1135 Å, which we have identified with the N I resonance triplet. Although this line had earlier been observed in FUSE and SPEAR data, it had been attributed to airglow or instrumental effects. We confirm, for the first time, that it must originate in the Galaxy. The dust-scattered continuum is dominated by a small number ((N < 100)) of O9 – B2 stars and shows the deep absorption feature near 1000 Å seen in the stellar spectrum. Our models suggest an albedo of (a < 0.5) over most of the spectrum (950 – 1550 Å) for the dust grains with the phase function asymmetry of (g < 0.6). We find an offset, comprising the extragalactic background light and halo contributors, consistent with our earlier results from the Box, including the decline in the offset near the Lyman limit. We confirm that much of the emission must be from an unidentified component of the CUVB.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Statistical properties of meteor beginning heights: A 15-year analysis with parent-body-based shower comparisons 流星起始高度的统计特性：基于母体的15年分析

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-09-16 DOI: 10.1007/s12036-026-10179-8

Chih-Ming Lin, I-Ching Yang

{"title":"Statistical properties of meteor beginning heights: A 15-year analysis with parent-body-based shower comparisons","authors":"Chih-Ming Lin, I-Ching Yang","doi":"10.1007/s12036-026-10179-8","DOIUrl":"10.1007/s12036-026-10179-8","url":null,"abstract":"<div>This study presents a statistical characterization of meteor beginning height distributions based on 15 years (2008–2022) of observations from the SonotaCo Network. The analysis focuses on major meteor showers to investigate population-level properties of meteoroid entry behavior and to compare statistical characteristics among different shower groups. Four major meteor showers–Orionids (ORI), Eta Aquariids (ETA), Southern Taurids (STA), and Northern Taurids (NTA)–are analyzed to examine differences between showers associated with different parent bodies. The beginning height distributions are generally symmetric and approximately Gaussian, although deviations from normality are observed in certain years. The mean beginning heights of showers associated with the same parent body show a high degree of consistency, with ORI and ETA clustering around 111 km, and STA and NTA around 95 km, while the dispersion varies significantly among showers and across observation periods. Comparisons between meteor showers associated with different parent bodies reveal systematic differences in the statistical properties of beginning heights. These results suggest that the mean beginning height represents a robust population-level characteristic that may reflect shared properties of meteoroid streams associated with common parent bodies. In contrast, the variability in dispersion indicates that multiple factors – including velocity dispersion, meteoroid size distribution, fragmentation processes, and observational conditions – contribute to the spread of beginning heights. Overall, this study provides a comprehensive statistical framework for comparing meteoroid populations across different meteor showers and highlights the complexity of factors controlling meteoroid ablation behavior in the upper atmosphere, with implications for understanding population-level differences among meteoroid streams.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comparative study of near Earth solar wind parameters during different solar epoch 不同太阳历期近地太阳风参数的比较研究

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-09-08 DOI: 10.1007/s12036-026-10170-3

Gulfam, Himanshu, Vinit kumar, Sachin Kumar, Rupesh M. Das, Yogendra K. Gautam, Beer Pal Singh, Kavita Sharma

{"title":"A comparative study of near Earth solar wind parameters during different solar epoch","authors":"Gulfam,  Himanshu,  Vinit kumar, Sachin Kumar, Rupesh M. Das, Yogendra K. Gautam, Beer Pal Singh, Kavita Sharma","doi":"10.1007/s12036-026-10170-3","DOIUrl":"10.1007/s12036-026-10170-3","url":null,"abstract":"<div>Annual variations in the near-Earth solar wind arise from evolving solar activity and Earth’s passage through the heliosphere, and play a critical role in space weather and its impacts on space based technological systems. Solar wind properties exhibit pronounced differences between solar minimum and maximum, influencing the terrestrial magnetosphere and upper atmosphere. In this study, we examine the solar cycle dependent variability of near-Earth solar wind plasma parameters during various phases of solar cycles 23, 24, and 25 using in situ observations from the Advanced Composition Explorer (ACE) spacecraft. Long-term variations in solar wind bulk speed ( ^{prime} V_{r} ^{prime} ), proton number density ({^{prime}n}_{p}^{prime}), dynamic pressure ({^{prime}P}_{dyn}^{prime}), and proton temperature (^{prime}{T}_{p}^{prime}) measured in the ecliptic plane are analysed across different phases of solar cycles using non-parametric trend tests and correlation techniques. The results demonstrate strong modulation of solar wind properties by solar activity and highlight the unusually weak heliospheric conditions during recent cycles. The extended minimum between cycles 23 and 24 is characterised by relatively low ({n}_{p}) and ({P}_{dyn}) with subdued conditions persisting throughout cycle 24 and into cycle 25, apart from transient enhancements linked to coronal mass ejections and stream interaction regions. Trend analysis indicates the absence of sustained monotonic behaviour, suggesting dominance of short-term variability. A robust positive correlation between ({V}_{r}) and ({T}_{p}) is observed, while correlations involving ({n}_{p}) and ({P}_{dyn}) remain weak, indicating that fundamental solar wind acceleration and heating processes persist despite reduced solar activity.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revisiting the cosmological model of Hubble parameter using f(Q) gravity 利用f(Q)引力重新审视哈勃参数的宇宙学模型

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-08-31 DOI: 10.1007/s12036-026-10165-0

Radhe Shyam, Priyanka Garg

{"title":"Revisiting the cosmological model of Hubble parameter using f(Q) gravity","authors":"Radhe Shyam, Priyanka Garg","doi":"10.1007/s12036-026-10165-0","DOIUrl":"10.1007/s12036-026-10165-0","url":null,"abstract":"<div>In this study, we have revisited the isotropic and homogeneous cosmological model within the framework of f(Q) gravity, where Q denotes the non-metricity term. The solution of field equations are obtained by taking a time-dependent scale factor (a(t)= big (sinh (alpha t)big )^{frac{1}{n}}) and specific form of f(Q) gravity (f(Q)= Q + eta Q^{delta }), where (alpha ), n, (eta ) and (delta ) are arbitrary constants. We calculate all the parameters by using the estimated values obtained from observational Hubble dataset. We analyze various cosmic features of the derived model such as the deceleration parameter q, the energy density (rho ), the pressure p, and the EoS parameter (omega ). The physical viability of the model is also examined through the analysis of energy conditions. We also investigate the speed of sound and jerk parameter associated with the proposal model that indicates the stability of a dark energy model. Our findings provide deeper insights into the dynamics of dark energy and its role in the accelerated expansion of the universe.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization of LSTIDs over the Indian region during 23-24 April 2023 geomagnetic storm using GNSS observations 2023年4月23-24日地磁风暴期间印度地区lstid的GNSS观测特征

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-08-30 DOI: 10.1007/s12036-026-10183-y

VENKATA RAMANA G, SRIDHAR M, SWAMY KCT, VENKATA RATNAM D

{"title":"Characterization of LSTIDs over the Indian region during 23-24 April 2023 geomagnetic storm using GNSS observations","authors":"VENKATA RAMANA G, SRIDHAR M, SWAMY KCT, VENKATA RATNAM D","doi":"10.1007/s12036-026-10183-y","DOIUrl":"10.1007/s12036-026-10183-y","url":null,"abstract":"<div>On 23 April 2023, the Earth experienced one of the most severe geomagnetic storms of the current solar cycle, triggered by a rapid coronal mass ejection (CME). Such events substantially disrupt the ionosphere, notably through the formation of Large-Scale Traveling Ionospheric Disturbances (LSTIDs), which can negatively affect satellite navigation and communication systems. In this paper, the morphology of LSTIDs was investigated over the Indian region during the storm event using detrended total electron content (dTEC) observations. To determine storm-time perturbations in Total Electron Content (TEC), data from a dense network of GNSS receivers (21 stations) in low and mid-latitudes in India were analyzed. Temporal variations of dTEC show specific properties of LSTIDs following the main phase of the storm with periodicities between 64 seconds to 512 seconds, a wavelength of 2293.3 km, a propagation velocity of about 956 m/sec (or) 3440.01 km/hr and a wave direction of 322.5º. The results add to the understanding of the low-latitude ionospheric responses to intense geomagnetic storms and provide much-needed understanding of improving space weather modeling and mitigation strategies on satellite navigation across the Indian subcontinent.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precision galaxy morphology recovery for petascale astronomy: A Physics-informed dual-domain transformer approach 千万亿次天文学的精确星系形态恢复：一种物理知情的双域变压器方法

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-08-27 DOI: 10.1007/s12036-026-10173-0

Vishnu Vasudev, Archana Geetha Jayakumar, Safad Ismail

{"title":"Precision galaxy morphology recovery for petascale astronomy: A Physics-informed dual-domain transformer approach","authors":"Vishnu Vasudev, Archana Geetha Jayakumar, Safad Ismail","doi":"10.1007/s12036-026-10173-0","DOIUrl":"10.1007/s12036-026-10173-0","url":null,"abstract":"<div>The imminent era of petascale astronomy, led by the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), promises a “cinematic portrayal of the Universe” but faces a fundamental bottleneck: the degradation of ground-based images by atmospheric turbulence. While Deep Learning (DL) has emerged as a rapid alternative to classical deconvolution, standard Convolutional Neural Networks (CNNs) struggle to model the global nature of Point Spread Function (PSF) convolution and often lack the physical constraints required for precision cosmology. To address these limitations, we propose the PI-dualformer (Physics-Informed Dual-Domain Linformer), a novel hybrid architecture that synergizes the local feature extraction of U-Nets, the global context modeling of Linear Transformers (Linformers), and the spectral precision of Dual-Domain (FFT) learning. We perform a rigorous ablation study comparing three incrementally complex models—PI-UNet, PI-former, and PI-dualformer—all trained with a custom Physics-Informed (PI) loss function that enforces consistency with a Moffat PSF profile. Evaluated on a simulated dataset derived from the HST COSMOS survey, the PI-dualformer demonstrates state-of-the-art performance, achieving a Pearson correlation of (rho =0.98) for galaxy ellipticity ((e_1, e_2)) and near-perfect recovery of the half-light radius ((R_{50})), significantly outperforming baseline CNNs and specialized competitors. Furthermore, a “stress test” on mismatched datasets reveals that the PI-dualformer exhibits exceptional robustness to variable seeing conditions and severe noise ((sigma =0.05)). With sub-second inference speeds on consumer hardware, the proposed framework offers a scientifically robust and computationally efficient solution for the real-time processing pipelines of next-generation astronomical surveys.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the stellar nucleosynthesis of tritium into helium and hydrogen nuclei in the intermediate region of the corona of the accretion disks of the X-ray binary system Cepheus X-4 仙王座x射线双星系统X-4吸积盘日冕中间区域氚核合成成氦和氢核的研究

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-08-27 DOI: 10.1007/s12036-026-10180-1

Loidel Puentes-Milián

引用次数: 0

Unraveling the Secrets of the lower Solar Atmosphere: One year of Operation of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1 解开太阳低层大气的秘密：Aditya-L1上的太阳紫外成像望远镜（SUIT）的一年运行

IF 1.5 4区物理与天体物理

Journal of Astrophysics and Astronomy Pub Date : 2026-08-27 DOI: 10.1007/s12036-026-10160-5

RAHUL Gopalakrishnan, SOUMYA ROY, DEEPAK KATHAIT, JANMEJOY SARKAR, V. N. NIVED, DURGESH TRIPATHI, A. N. RAMAPRAKASH, Sami K. SOLANKI, SREEJITH PADINHATTEERI, MAHESH BURSE, RUSHIKESH DEOGAONKAR, SAKYA SINHA, H. N. ADITHYA, K. SANKARASUBRAMANIAN, DIPANKAR BANERJEE, DIBYENDU NANDY, SRIKANT MOTAMARRI, AMIT PUROHIT, T. RETHIKA, K. R. SREENATH, PRIYANKA UPADHYAY, PRAPTI MITTAL, P. R. PRINCE

{"title":"Unraveling the Secrets of the lower Solar Atmosphere: One year of Operation of the Solar Ultraviolet Imaging Telescope (SUIT) on board Aditya-L1","authors":"RAHUL Gopalakrishnan, SOUMYA ROY, DEEPAK KATHAIT, JANMEJOY SARKAR, V. N. NIVED, DURGESH TRIPATHI, A. N. RAMAPRAKASH, Sami K. SOLANKI, SREEJITH PADINHATTEERI, MAHESH BURSE, RUSHIKESH DEOGAONKAR, SAKYA SINHA, H. N. ADITHYA, K. SANKARASUBRAMANIAN, DIPANKAR BANERJEE, DIBYENDU NANDY, SRIKANT MOTAMARRI, AMIT PUROHIT, T. RETHIKA, K. R. SREENATH, PRIYANKA UPADHYAY, PRAPTI MITTAL, P. R. PRINCE","doi":"10.1007/s12036-026-10160-5","DOIUrl":"10.1007/s12036-026-10160-5","url":null,"abstract":"<div>The Solar Ultraviolet Imaging Telescope (SUIT) is an instrument onboard Aditya–L1, the first solar space observatory of the Indian Space Research Organization (ISRO), India, launched on September 2, 2023. SUIT is designed to image the Sun in the 200–400 nm wavelength band in eight narrowband and three broadband filters. SUIT’s science goals start with observing the solar atmosphere and large-scale continuum variations, the physics of solar flares in the NUV region, and many more. The paper elucidates the functioning of the instrument, software packages developed for easier calibration, analysis, and feedback, calibration routines, and the regular maintenance activity of SUIT during the first year of its operation. The paper also describes the various operations performed by SUIT, the program sequences orchestrated to fulfill the mission’s scientific objectives, and highlights some of the notable observations made during its first year of observations.</div>","PeriodicalId":610,"journal":{"name":"Journal of Astrophysics and Astronomy","volume":"47 2","pages":""},"PeriodicalIF":1.5,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0