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Red supergiants (RSGs), as the descendants of OB-type stars and the progenitors of supernovae, provide crucial insights into the evolution of massive stars, particularly in binary systems. Previous studies show that the binary fraction of RSGs ( $\approx 15\!-\!40~{{\ \rm per\ cent}}$ ) is ...
Two particular challenges face type Ia supernovae (SNeIa) as probes of the expansion rate of the Universe. One is that they may not be fair tracers of the matter velocity field and the second is that their peculiar velocities distort the Hubble expansion. Although the latter has been estimated at ...
This work presents a new detailed study on the energy-dependent variation in the X-ray polarization of the Crab pulsar wind nebula (PWN), obtained using data from the Imaging X-ray Polarimetry Explorer ( IXPE ). For the entire PWN, we observed a linear variation in polarization degree (PD), and ...
We search a sample of 9361 613 isolated sources with 13< g <14.5 mag for slowly varying sources. We select sources with brightness changes larger than $\sim 0.03$ mag yr −1 over 10 yr, removing false positives due to, for example, nearby bright stars or high proper motions. After a thorough ...
Recent observations with JWST and Atacama Large Millimeter/submillimeter Array (ALMA) have unveiled galaxies with regular discs at significantly higher redshifts than previously expected. This appears to be in contrast to our understanding of galaxy evolution at high redshift. Additionally, the ...
We present the results of a polarization study based upon relativistic magnetohydrodynamic modelling of jets running into hydrostatic, spherically symmetric cluster atmospheres. For the first time in a numerical simulation, we derive Faraday rotation measure maps (RM maps) from model cluster ...
Mergers are fundamental to our understanding of the processes driving the evolution of the structure and morphology of galaxies, star formation, active galactic nucleus activity, and the redistribution of stellar mass in the Universe. Determining the fraction and properties of mergers across cosmic ...
Using galaxies from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) along with haloes from the dark matter only constrained ELUCID (Exploring the Local Universe with the reConstructed Initial Density field) simulation, we examine the properties of galaxies and haloes with respect to their ...
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5 year Impact Factor
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