• Detection of a new sample of Galactic white dwarfs in the direction of the Small Magellanic Cloud 

  Sidharth, A. V; Shridharan, B; Mathew, B; Devaraj, A; Cysil, T. B; Stalin, C. S; Arun, R; Bhattacharyya, S; Kartha, S. S; Robin, T (EDP Sciences, 2024-10)

  Aims. In this study, we demonstrate the efficacy of the Ultraviolet Imaging Telescope (UVIT) in identifying and characterizing white dwarfs (WDs) within the Milky Way Galaxy. Methods. Leveraging the UVIT point-source ...
• SN 2021wvw: a core-collapse supernova at the subluminous, slower, and shorter end of type IIPs 

  Teja, Rishabh Singh; Goldberg, Jared A; Sahu, D. K; Anupama, G. C; Singh, Avinash; Swain, Vishwajeet; Bhalerao, Varun (American Astronomical Society., 2024-10-10)

  We present detailed multiband photometric and spectroscopic observations and analysis of a rare core-collapse supernova, SN 2021wvw, that includes photometric evolution up to 250 days and spectroscopic coverage up to 100 ...
• Calibration of spectropolarimetry channel of visible emission line coronagraph onboard Aditya-L1 

  Venkata Suresh, Narra; Sasikumar Raja, K; Prasad, B. R; Singh, J; Mishra, Shalabh; Sanal Krishnan, V. U; Bhavana Hegde, S; Utkarsha, D.; Natarajan, V; Pawan Kumar, S; Muthu Priyal, V; Savarimuthu, P; Priya, Gavshinde; Kamath, P. U (Springer Nature, 2024-10)

  The magnetic field strength and its topology play an important role in understanding the formation, evolution, and dynamics of the solar corona. Also, it plays a significant role in addressing long-standing mysteries such ...
• Casting light on degeneracies: A comprehensive study of lightcurve variations in microlensing events OGLE-2017-BLG-0103 and OGLE-2017-BLG-0192 

  Shah, Sarang (American Astronomical Society, 2024-10-01)

  This study investigates orbital parallax in gravitational microlensing events, focusing on OGLE-2017-BLG-0103 and OGLE-2017-BLG-0192. For events with timescales ≤60 days, a Jerk-Parallax degeneracy arises due to high Jerk ...
• Full non-LTE spectral line formation III. The case of a two-level atom with broadened upper level 

  Sampoorna, M; Paletou, F; Bommier, V; Lagache, T (EDP Sciences, 2024-10)

  In the present paper we consider the full nonlocal thermodynamic equilibrium (non-LTE) radiation transfer problem. This formalism allows us to account for deviation from equilibrium distribution of both the radiation field ...
• Candidate ram-pressure stripped galaxies in six low-redshift clusters revealed from ultraviolet imaging 

  George, K; Poggianti, B. M; Omizzolo, A; Vulcani, B; Cote, P; Postma, J; Smith, R; Jaffe, Y. L; Gullieuszik, M; Moretti, A; Subramaniam, A; Sreekumar, P; Ghosh, S. K; Tandon, S. N; Hutchings, J. B (EDP Sciences, 2024-10)

  The assembly of galaxy clusters is understood to be a hierarchical process with a continuous accretion of galaxies over time, which increases the cluster size and mass. Late-type galaxies that fall into clusters can undergo ...
• Spectro-polarimetric study to constrain accretion-ejection properties of MCG-5-23-16 using IXPE and NuSTAR observations 

  Mondal, Santanu; Chatterjee, Rwitika; Agrawal, Vivek K; Nandi, Anuj (Published by Cambridge University Press on behalf of Astronomical Society of Australia, 2024-10)

  We conducted a study on the X-ray polarisation properties of MCG-5-23-16 by analysing long-term monitoring data from NuSTAR jointly with IXPE observations made in May and November 2022. The re-analysis of IXPE data gives ...
• ATOMS: ALMA three-millimetre observations of massive star-forming regions – XVI. Neutral versus ion line widths 

  Zhang, C; Liu, Tie; Ren, Z. Y; Zhu, Feng Yao; Liu, Hongli; Wang, Ke; Wu, J, W; Li, D; Jiao, Sihan; Tatematsu, Kenichi; Juvela, Mika; Lee, C. W; Jiao, Wenyu; Bronfman, Leonardo; Zhou, Jianwen; Xu, Feng Wei; Tej, A; Hwang, Jihye; Archana Soam; Das, Swagat; Chibueze, J. O (Oxford University Press on behalf of Royal Astronomical Society, 2024-10)

  It has been suggested that the line width of ions in molecular clouds is narrower than that of the co-existing neutral particles, which has been interpreted as an indication of the decoupling of neutral turbulence from ...
• Anatomy of the star formation in a tidally disturbed disk galaxy: NGC 3718 

  Watts, Chandan; Das, Mousumi; Barway, Sudhanshu (American Astronomical Society, 2024-10-20)

  We present a UV, optical, and near-IR study of the star-forming complexes in the nearby peculiar galaxy NGC 3718, using Ultraviolet Imaging telescope, Galaxy Evolution Explorer, Spitzer, and DECam Legacy Survey imaging ...
• Peering into the heart of the giant molecular cloud G148.24+00.41: A deep near-infrared view of the newly hatched cluster FSR 655 

  Rawat, Vineet; Samal, M. R; Ojha, D. K; Brajesh, Kumar; Sharma, Saurabh; Jose, J; Sagar, R; Yadav, R. K (American Astronomical Society, 2024-09)

  We present a detailed near-infrared study of an embedded cluster located in the hub of the giant molecular cloud G148.24+00.41 of mass ∼105 Me, with the TANSPEC instrument mounted on the 3.6 m Devasthal Optical Telescope. ...
• UVIT survey of the host galaxies of active galactic nuclei. I. star formation scenarios 

  Nandi, Payel; Stalin, C. S; Dam, Poulomi; Saikia, D. J (The American Astronomical Society, 2024-09-20)

  Circumnuclear star formation (SF) is generally seen in galaxies hosting active galactic nuclei (AGN); however, the connection between the AGN activity and SF in them is less well understood. To explore this connection on ...
• Dependence of spicule properties on the magnetic field—Results from magnetohydrodynamics simulations 

  Kesri, Kartav; Dey, Sahel; Chatterjee, Piyali; Erdelyi, Robertus (The American Astronomical Society, 2024-09-20)

  Solar spicules are plasma jets observed in the interface region between the visible solar surface and the corona. At any given time, there is a forest of spicules originating in the chromosphere of the Sun. While various ...
• An accreting supermassive black hole buried in a faint dwarf galaxy 

  Paswan, Abhishek; Das, Mousumi; Rubinur, K (The American Astronomical Society, 2024-09-10)

  In the last decade, there have been several discoveries of active galactic nuclei (AGN) in dwarf galaxies including an AGN in an ultracompact dwarf galaxy with a black hole mass >106 Me. However, finding a supermassive ...
• Accretion properties of soft X-Ray transient XTE J1856+053 during its 2023 outburst 

  Chatterjee, Debjit; Jana, A; Chang, Hsiang-Kuang (The American Astronomical Society, 2024-09-01)

  Soft X-ray transients (SXTs) are a subclass of the low-mass X-ray binaries that occasionally show a sudden rise in their soft X-ray luminosity; otherwise, they remain in an extremely faint state. We investigate the accretion ...
• Investigation of phase shift and travel time of acoustic waves in the lower solar atmosphere using multiheight velocities 

  Kumar, Hirdesh; Brajesh Kumar; Mathew, Shibu K; Bayanna, A. Raja; Rajaguru, S. P (The American Astronomical Society, 2024-09-01)

  We report and discuss the phase shift and phase travel time of low-frequency (ν < 5.0 mHz) acoustic waves estimated within the photosphere and photosphere–chromosphere interface regions, utilizing multiheight velocities ...
• Simultaneous far-ultraviolet and near-ultraviolet observations of T Tauri stars with UVIT/AstroSat: Probing the accretion process in young stars 

  Nayak, Prasanta K; Narang, Mayank; Manoj, P; Gorti, U; Subramaniam, Annapurni; George, Nayana; Mondal, Chayan (The American Astronomical Society, 2024-09-01)

  We present results from simultaneous far-ultraviolet (FUV) and near-ultraviolet (NUV) observations of T Tauri stars (TTSs) in the Taurus molecular cloud with UVIT/AstroSat. This is the very first UVIT study of TTSs. ...
• Optical polarimetry study of the Lambda-Orionis star-forming region 

  Neha, S; Archana Soam; Maheswar, G (EDP Sciences, 2024-09)

  We present an optical polarimetry study of the nearby star-forming region Lambda-Orionis to map the plane-of-the-sky magnetic field geometry to understand the magnetized evolution of the HII region and the associated small ...
• Challenges in modeling the dark matter halo of NGC 1052–DF2: Cored versus cuspy halo models 

  Aditya, K (EDP Sciences, 2024-09)

  Aims. The discovery of NGC 1052−DF2 and subsequent modeling have shown that NGC 1052−DF2 is deficient in dark matter and is in conflict with the standard stellar-to-halo mass ratio. In this work, we aim to resolve the ...
• Transition region response to quiet-Sun Ellerman bombs 

  Bhatnagar, Aditi; van der Voort, Luc Rouppe; Joshi, Jayant (EDP Sciences, 2024-09)

  Context. Quiet-Sun Ellerman bombs (QSEBs) are key indicators of small-scale photospheric magnetic reconnection events. Recent high-resolution observations have shown that they are ubiquitous and that large numbers of QSEBs ...
• Modelling the connection between propagating disturbances and solar spicules 

  Skirvin, S. J; Samanta, T; Van Doorsselaere, T (EDP Sciences, 2024-09)

  Aims. Propagating (intensity) disturbances (PDs) have been extensively reported in observations of coronal loops and polar plumes, along with more recent links to co-temporal spicule activity in the solar atmosphere. ...

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