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astro-ph.EP2025
On the coincidence between the close passage of HD7977 and the Pliocene-Pleistocene transition
Zhuoya Cao, Abraham Loeb, Morgan MacLeod
The Oort Cloud's dynamical evolution is significantly influenced by both the galactic tide and stellar flybys. This study investigates the particular case of HD7977's close encount…
astro-ph.SR2025
Tidal Amplitudes in the Magellanic Cloud Population of Heartbeat Stars
Morgan MacLeod, Abraham Loeb
Heartbeat (HB) stars exhibit pulses in their light curves once per orbit due to ellipsoidal distortions from strong tides at periapse. We analyze the population of HB stars in the…