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A full reconstruction of two galaxy clusters intra-cluster medium with strong gravitational lensing
Lewis, Geraint F.; Mahler, Guillaume; Hilton, Matt +6 more
Whilst X-rays and Sunyaev-Zel'dovich observations allow to study the properties of the intra-cluster medium (ICM) of galaxy clusters, their gravitational potential may be constrained using strong gravitational lensing. Although being physically related, these two components are often described with different physical models. Here, we present a uni…
The Diffusion Tensor of Protons at 1 au: Comparing Simulation, Observation, and Theory
Engelbrecht, N. E.; Strauss, R. D.; Lang, J. T. +1 more
The natural variation in plasma parameters observed at 1 au can lead to a variation in transport parameters, such as diffusion and drift coefficients, for energetic charged particles of solar and galactic origin. Given the importance of these parameters to particle transport studies, this variation is investigated through test particle simulations…
The X-ray mysteries of neutron stars and white dwarfs
Rea, Nanda; Schartel, Norbert
These two types of compact objects share several similarities, despite their different compositions. A short workshop in Spain brought communities together to share understanding of dense matter under extreme conditions.
Influence of Mid-infrared Galactic Bubble on Surroundings: A Case Study on IRAS 16489-4431
Liu, Tie; Wang, Ke; Dewangan, Lokesh +3 more
We studied the influence of a massive star on a mid-infrared bubble and its surrounding gas in the IRAS 16489-4431 star-forming region using multi-wavelength data. The Spitzer mid-infrared band images revealed the shocked nature of the bubble. Analyses showed that the bubble is developed by a massive star owing to its strong radiation pressure. Ev…
KMT-2023-BLG-0416, KMT-2023-BLG-1454, KMT-2023-BLG-1642: Microlensing planets identified from partially covered signals
Han, Cheongho; Udalski, Andrzej; Lee, Chung-Uk +32 more
Aims: We investigate the 2023 season data from high-cadence microlensing surveys with the aim of detecting partially covered shortterm signals and revealing their underlying astrophysical origins. Through this analysis, we ascertain that the signals observed in the lensing events KMT-2023-BLG-0416, KMT-2023-BLG-1454, and KMT-2023-BLG-1642 are…
A discussion on estimating small bodies taxonomies using phase curves results
Alvarez-Candal, Alvaro
Upcoming large multiwavelength photometric surveys will provide a leap in our understanding of small body populations, among other fields of modern astrophysics. Serendipitous observations of small bodies in different orbital locations allow us to study diverse phenomena related to how their surfaces scatter solar light. In particular, multiple ob…
eROSITA (eRASS1) study of the Canis Major overdensity: Developing a multi-wavelength algorithm for classifying faint X-ray sources
Sasaki, Manami; Saeedi, Sara; Robrade, Jan +6 more
Context. Using data from eROSITA (extended Roentgen Survey with an Imaging Telescope Array) on board Spektrum-Roentgen- Gamma (Spektr-RG, SRG) taken during the first eROSITAall-sky survey (eRASS1), we performed the first X-ray classification and population study in the field of the Canis Major overdensity (CMa OD), which is an elliptical-shaped st…
Study of Wolf-Rayet Stars Using uGMRT
Tej, Anandmayee; del Palacio, Santiago; Saha, Anindya +4 more
In recent years, systems involving massive stars with large wind kinetic power have been considered as promising sites for investigating relativistic particle acceleration in low radio frequencies. With this aim, we observed two Wolf-Rayet systems, WR 114 and WR 142, using upgraded Giant Meterwave Radio Telescope observations in Band 4 (550–950 MH…
Helioseismic Properties of Dynamo Waves in the Variation of Solar Differential Rotation
Kosovichev, Alexander G.; Mandal, Krishnendu; Pipin, Valery V.
Solar differential rotation exhibits a prominent feature: its cyclic variations over the solar cycle, referred to as zonal flows or torsional oscillations, are observed throughout the convection zone. Given the challenge of measuring magnetic fields in subsurface layers, understanding deep torsional oscillations becomes pivotal in deciphering the …
Hubble Space Telescope observations of nearby type 1 quasars. I. Characterization of the extended [O III] 5007 Å emission
Turner, T. J.; Kraemer, S. B.; Crenshaw, D. M. +13 more
We use the Hubble Space Telescope to analyse the extended [O III] 5007 Å emission in seven bright radio-quiet type 1 quasars (QSO1s), focusing on the morphology and physical conditions of their extended Narrow-Line Regions (NLRs). We find NLRs extending 3-9 kpc, with four quasars showing roughly symmetrical structures (