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  • Kodaikanal Observatory marks 125 stellar years 
    The New Indian Express (The New Indian Express, 2024-07-09)
  • Data processing of visible emission line coronagraph onboard ADITYA-L1 
    Priyal, M; Singh, J; Prasad, B. R; Sumana, Chavali; Kumar, Varun; Mishra, Shalabh; Venkata, S. N; Sindhuja, G; Sasikumar Raja, K; Amit Kumar; Krishnan, Sanal; Hegde, Bhavana; Utkarsha, D; Natarajan, V; Somasundaram, P. K; Nagabhushana, S; Kamath, P. U; Kathiravan, S; Mani, V. T; Basavaraju, Suresh; Chavan, Rajkumar; Vemareddy, P; Ravindra, B; Rajaguru, S. P; Nagaraju, K; Mishra, Wageesh; Joshi, Jayant; Samanta, T; Chatterjee, Piyali; Kathiravan, C; Ramesh, R (Elsevier B.V, 2024-07-01)
    ADITYA-L1 is India's first dedicated mission to observe the Sun and its atmosphere from a halo orbit around L1 point. Visible emission line coronagraph (VELC) is the primary payload on board Aditya-L1 to observe the Sun’s ...
  • Host-star Properties of Hot, Warm, and Cold Jupiters in the Solar Neighborhood from Gaia Data Release 3: Clues to Formation Pathways 
    Banerjee, Bihan; Narang, Mayank; Manoj, P; Henning, Thomas; Tyagi, Himanshu; Surya, Arun; Nayak, Prasanta K; Tripathi, Mihir (American Astronomical Society, 2024-07-01)
    Giant planets exhibit diverse orbital properties, hinting at their distinct formation and dynamic histories. In this paper, using Gaia Data Release 3 (DR3), we investigate if and how the orbital properties of Jupiters are ...
  • Feasibility Study for Adaptive Optics Implementation on the 2m Himalayan Chandra Telescope 
    Gurwinder Singh Hundal (Indian Institute of Astrophysics, 2024-07)
    Atmospheric turbulence in the Earth’s atmosphere significantly impacts the performance of ground-based telescopes. Adaptive Optics (AO) has emerged as an indispensable technology in ground-based astronomy, revolutionizing ...
  • UVIT Study of the MAgellanic Clouds (U-SMAC) – I. Recent star formation history and kinematics of the Shell region in the north-eastern Small Magellanic Cloud 
    Hota, Sipra; Subramaniam, A; Dhanush, S. R; Cioni, Maria-Rosa L; Subramanian, S (Oxford University Press on behalf of Royal Astronomical Society, 2024-07)
    The interactions between the Magellanic Clouds significantly affect the shape and distribution of the young stellar population, particularly in the periphery of the Small Magellanic Cloud (SMC). We present the first far-UV ...
  • Numerous bidirectionally propagating plasma blobs near the reconnection site of a solar eruption 
    Hou, Zhenyong; Tian, Hui; Madjarska, Maria S; Chen, Hechao; Samanta, T; Bai, Xianyong; Li, Zhentong; Su, Yang; Chen, Wei; Deng, Yuanyong (EDP Sciences, 2024-07)
    A current sheet is a common structure involved in solar eruptions. However, it is observed in a minority of the events, and the physical properties of its fine structures during a solar eruption are rarely investigated. ...
  • PDS 70 unveiled by star-hopping: Total intensity, polarimetry, and millimeter imaging modeled in concert 
    Wahhaj, Z; Benisty, M; Ginski, C; Swastik, C; Arora, S; van Holstein, R. G; De Rosa, R; Yang, B; Bae, J; Ren, B (EDP Sciences, 2024-07)
    Context. Most ground-based direct-imaging planet search campaigns use angular differential imaging that distorts the signal from extended sources, such as protoplanetary disks. In the case of the young system PDS 70, for ...
  • AstroSat/UVIT Study of the Diffuse Ultraviolet Radiation in the Dwarf Galaxy Holmberg II 
    Bordoloi, Olag Pratim; Ananthamoorthy, B; Shalima, P; Safonova, M; Bhattacharya, Debbijoy; Shchekinov, Yuri A; Gogoi, Rupjyoti (IOP Publishing, 2024-07)
    We present measurements of diffuse ultraviolet (UV) emission in the dwarf irregular galaxy Holmberg II obtained with the Ultra Violet Imaging Telescope (UVIT) instrument onboard AstroSat, India's first multiwavelength space ...
  • Low-frequency solar radio type II bursts and their association with space weather events during the ascending phase of solar cycle 25 
    Ndacyayisenga, Theogene; Uwamahoro, Jean; Uwamahoro, Jean Claude; Okoh, Daniel Izuikedinachi; Sasikumar Raja, K; Rabiu, Akeem Babatunde; Kwisanga, Christian; Monstein, Christian (Copernicus Publications on behalf of the European Geosciences Union, 2024-07)
    Type II solar radio bursts are signatures of the coronal shocks and, therefore, particle acceleration events in the solar atmosphere and interplanetary space. Type II bursts can serve as a proxy to provide early warnings ...
  • Mode identification and period fitting in six pulsating hot subdwarfs 
    Sahoo, S. K; Baran, A. S; Nemeth, P; Worters, H. L; Pramod Kumar, S; Joshi, S; Kilkenny, D (Cambridge University Press on behalf of Astronomical Society of Australia, 2024-07)
    We report the results of our analysis of six gravity-mode pulsating hot subdwarf stars observed in the short cadence mode by Transiting Exoplanet Survey Satellite. We detected at least 10 pulsation periods in each star, ...
  • Analysis of Gaia DR3 data of selected high galactic latitude H-alpha emission stars 
    Parthasarathy, M (American Astronomical Society, 2024-07)
    Gaia DR3 data of 52 high galactic latitude Hα emission stars selected from the paper of Stephenson are analyzed. Ten new variable stars and eight new high velocity stars have been found. Details of six post-AGB stars and ...
  • Revisiting the Dust Torus Size–Luminosity Relation Based on a Uniform Reverberation-mapping Analysis 
    Mandal, Amit Kumar; Woo, Jong-Hak; Wang, Shu; Rakshit, Suvendu; Cho, Hojin; Son, Donghoon; Stalin, C. S (2024-06-20)
    We investigate the torus size–luminosity relation of Type 1 active galactic nuclei (AGNs) based on the reverberation-mapping analysis using the light curves of the optical continuum and the IR continuum obtained with the ...
  • Equator to Pole Solar Chromospheric Differential Rotation Using Ca-K Features Derived from Kodaikanal Data 
    Kharayat, Hema; Singh, J; Priyal, M; Ravindra, B (American Astronomical Society, 2024-06-20)
    Differential rotation is one of the basic characteristics of the Sun, and it plays an important role in generating the magnetic fields and its activities. We investigated rotation rate using chromospheric features such ...
  • A Comprehensive Kinematic Model of the Large Magellanic Cloud Disk from Star Clusters and Field Stars using Gaia DR3: Tracing the Disk Characteristics, Rotation, Bar, and Outliers 
    Dhanush, S. R; Subramaniam, A; Subramanian, S (American Astronomical Society, 2024-06-20)
    The internal kinematics of the Large Magellanic Cloud (LMC) disk have been modeled by several studies using different tracers with varying coverage, resulting in a range of parameters. Here, we model the LMC disk using 1705 ...
  • An Assessment of Solar Cycle 25 progress through observation of SRBs and associated Geomagnetic Storms 
    Ndacyayisenga, Theogene; Uwamahoro, Jean; Sasikumar Raja, K; Uwamahoro, Jean Claude; Kwisanga, Christian; Monstein, Christian (Elsevier B.V, 2024-06-15)
    Geomagnetic storms are severe aspects of Space Weather. They originate due to solar transient emissions such as coronal mass ejections (CMEs), whose energetic materials propagate in the Interplanetary medium and are coupled ...
  • Age Analysis of Extrasolar Planets: Insight from Stellar Isochrone Models 
    Swastik, C; Banyal, R. K; Narang, Mayank; Unni, Athira; Sivarani, T (American Astronomical Society, 2024-06-03)
    There is growing evidence from stellar kinematics and galactic chemical evolution suggesting that giant planets (MP 0.3MJ) are relatively young compared to the most commonly occurring population of small planets (MP < ...
  • Possibilities of identifying members from Milky Way satellite galaxies using unsupervised machine learning algorithms 
    Divakar, Devika K; Saraf, Pallavi; Sivarani, T; Doddamani, Vijayakumar H (Indian Academy of Sciences, 2024-06)
    A detailed study of stellar populations in Milky Way (MW) satellite galaxies remains an observational challenge due to their faintness and fewer spectroscopically confirmed member stars. We use unsupervised machine learning ...
  • Spectroscopic Investigation of Nebular Gas (SING): instrument design, assembly and calibration 
    Bharat Chandra, P; Binukumar, G; Shubham Jankiram, Ghatul; Jain, Shubhangi; Sriram, S; Mahesh Babu, S; Mohan, Rekhesh; Safonova, M; Murthy, J; Sachkov, Mikhail (Springer Nature, 2024-06)
    The Spectroscopic Investigation of Nebular Gas (SING) is a near-ultraviolet (NUV) low-resolution spectrograph payload designed to operate in the NUV range, 1400 Å – 2700 Å, from a stable space platform. SING telescope ...
  • SolarAccel: FPGA accelerated 2D cross-correlation of digital images: Application to solar adaptive optics 
    Das, Soham; Rao, Nanditha; Phanindra, D. V. S; Sridharan, R (Indian Academy of Sciences, 2024-06)
    The cross-correlation of two-dimensional digital images is fundamental to solar adaptive optics computations. It can be used in a simple tip-tilt correction system to identify the relative shift between consecutive images ...
  • Science with the Daksha high energy transients mission 
    Bhalerao, Varun; Sawant, Disha; Pai, Archana; Tendulkar, Shriharsh; Vadawale, Santosh; Bhattacharya, Dipankar; Rana, Vikram; Adalja, Hitesh Kumar L; Anupama, G. C; Bala, Suman; Banerjee, Smaranika; Basu, Judhajeet; Belatikar, Hrishikesh; Beniamini, Paz; Bhaganagare, Mahesh; Bhaskar, Ankush; Bhattacharjee, Soumyadeep; Bose, Sukanta; Cenko, Brad; Chanda, Mehul Vijay; Dewangan, Gulab; Dixit, Vishal; Dutta, Anirban; Gawade, Priyanka; Ghodgaonkar, Abhijeet; Goyal, Shiv Kumar; Gunasekaran, Suresh; Hemanth, Manikantan; Hotokezaka, Kenta; Iyyani, Shabnam; Guruprasad, P. J; Kasliwal, Mansi; Koyande, Jayprakash G; Kulkarni, Salil; Kutty, APK; Ladiya, Tinkal; Mahapatra, Suddhasatta; Marla, Deepak; Mate, Sujay; Mehla, Advait; Mithun, N. P. S; More, Surhud; Mote, Rakesh; Mukherjee, Dipanjan; Narang, Sanjoli; Narendranath, Shyama; Nema, Ayush; Nimbalkar, Sudhanshu; Nissanke, Samaya; Palit, Sourav; Patel, Jinaykumar; Patel, Arpit; Paul, Biswajit; Pradeep, Priya; Ramachandran, Prabhu; Roy, Kinjal; Saiguhan, B.S. Bharath; Saji, Joseph; Saleem, M; Saraogi, Divita; Sastry, Parth; Shanmugam, M; Sharma, Piyush; Shetye, Amit; Singh, Nishant; Singh, Shreeya; Singhal, Akshat; Sreekumar, S; Sridhar, Srividhya; Srinivasan, Rahul; Tallur, Siddharth; Tiwari, Neeraj K; Vadladi, Amrutha Lakshmi; Vaishnava, C.S; Vishwakarma, Sandeep; Waratkar, Gaurav (Springer Nature, 2024-06)
    We present the science case for the proposed Daksha high energy transients mission. Daksha will comprise of two satellites covering the entire sky from 1 keV to > 1 MeV. The primary objectives of the mission are to ...

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