Tootfinder

#Sonnenstürme verkürzen die Lebensdauer von #Starlink-Satelliten und lassen sie schneller zur Erde zurückkehren.
Durch erhöhte #Atmosphärendichte steigt der Luftwiderstan…

Tracking Reentries of Starlink Satellites During the Rising Phase of Solar Cycle 25
The exponential increase of low-Earth orbit (LEO) satellites in the past 5 years has brought into intense focus the need for reliable monitoring and reentry prediction to safeguard from space collisions and ground debris impacts. However, LEO satellites fly within the upper atmosphere region that exerts significant drag forces to their orbits, reducing their lifetimes, and increasing collision risks during dynamic events, like geomagnetic storms. Such conditions can become more severe during ge…

This https://arxiv.org/abs/2503.13527 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Isospin sum rules for bottom-baryon weak decays
Isospin symmetry, as the most precise flavor symmetry, can be used to extract information about hadronic dynamics. The effective Hamiltonian operators of bottom quark weak decays are zero under a series of isospin lowering operators $I_-^n$, which permits us to generate isospin sum rules without the Wigner-Eckart invariants. In this work, we derive hundreds of isospin sum rules for the two- and three-body non-leptonic decays of bottom baryons. They provide hints for new decay modes and the isos…