Tootfinder

Evidence for a steeper SMBH-Bulge mass relationship extended to low masses using TDE host galaxies
Paige Ramsden, Matt Nicholl, Sean L. McGee, Andrew Mummery
https://arxiv.org/abs/2506.16155

Evidence for a steeper SMBH-Bulge mass relationship extended to low masses using TDE host galaxies
Tidal disruption events (TDEs) are excellent tools for probing low mass supermassive black holes (SMBHs) that may otherwise remain undetected. Here, we present an extended SMBH--Bulge mass scaling relationship using these lower mass TDE black holes and their host galaxies. Bulge masses are derived using Prospector fits to UV-MIR spectral energy distributions for the hosts of 40 TDEs that have a detected late-time UV/optical plateau emission, from which a SMBH mass is derived. Overall, we find t…

Peter Hook tonight in #Buffalo. Never gonna see New Order live, so this will do.
My best pics of the band are from other people.

Zahlen, bitte! Solomon W. Golomb und eine Oktillion IT-Systeme
Der Mathematiker Solomon W. Golomb schuf mit seiner Arbeit zu linear rückgekoppelten Schieberegistern die Basis, mit der heute unzählige IT-Systeme arbeiten.

Hulk Hogan ist gestorben.
Das ist kompliziert für jemanden wie mich, der in den 80ern geboren wurde und für den Hogan lange als einer der größten Wrestler aller Zeiten galt.
In den letzten Jahren hörte man aber immer öfter, dass er ein sehr schlechter Mensch ist...
Also fasse ich mich nur kurz:
Ruhe in Frieden, Hulk.
#HulkHogan

Johannes är aktuell med en stor mängd annonser på sociala medier just nu.
Johannes Cullberg och en recension av boken "Ta makten över din hälsa" https://traningslara.se/johannes-cullberg-och-en-recension-av-boken-ta-makten-ov…

Johannes Cullberg och en recension av boken "Ta makten över din hälsa"
För ungefär ett halvår sedan fick jag ett par meddelande på sociala medier om att jag blev omnämnd av Johannes Cullberg och Petra Månström i Maratonpodden som drivs av Petra (avsnitt 298). Jag lyssnade igenom avsnittet och tyckte att det fanns en del som jag kunde bemöta så jag satte mig för att börja skriva […]

Von der Weinkönigin abgeschaut. https://aaronparnas.substack.com/p/breaking-mike-johnson-sends-house

GW231123: a product of successive mergers from $\sim 10 $ stellar-mass black holes
Yin-Jie Li, Shan-Peng Tang, Ling-Qin Xue, Yi-Zhong Fan
https://arxiv.org/abs/2507.17551 https:…

GW231123: a product of successive mergers from $\sim 10 $ stellar-mass black holes
GW231123 is an exceptionally massive binary black hole (BBH) merger with unusually high component spins. Such extreme properties challenge conventional stellar evolution models predicting a black hole mass gap due to pair-instability supernovae. We analyze GW231123 using population-informed priors on BH mass and spin distributions to test possible formation scenarios: first-generation stellar collapse, hierarchical (multi-generation) mergers, and primordial origin. Our analysis strongly prefers…

Sources: Elad Gil is raising a fund of ~$1.5B that could grow to $2B based on investor interest, making it one of the largest fundraising hauls for a solo GP (Natasha Mascarenhas/The Information)
https://www.theinformation.com/articles/el…

Elad Gil Plots $1.5 Billion Fund, Stretching Definition of a Solo GP
Venture capital firms are under pressure to make rapid-fire decisions about big checks in the frenzied world of artificial intelligence investing, straining partnerships that need a unified front. It helps sometimes to have just one decision-maker.That makes a case for Elad Gil, a prolific ...

Quasibound states of massive charged scalars around dilaton black holes in $2 1$ dimensions: Exact frequencies
H. S. Vieira
https://arxiv.org/abs/2506.18740

Quasibound states of massive charged scalars around dilaton black holes in $2+1$ dimensions: Exact frequencies
In this work, we investigate massive charged scalar perturbations in the background of three-dimensional dilaton black holes with a cosmological constant. We demonstrate that the wave equations governing the dynamics of these perturbations are exactly solvable, with the radial part expressible in terms of confluent Heun functions. The quasibound state frequencies are computed analytically, and we examine their dependence on the scalar field's mass and charge, as well as on the black hole's mass…

Comprehensively Constraining Ultra-Light Primordial Black Holes Through Relic Formation and Early Mergers
Amirah Aljazaeri, Christian T. Byrnes
https://arxiv.org/abs/2506.16154

Comprehensively Constraining Ultra-Light Primordial Black Holes Through Relic Formation and Early Mergers
We investigate constraints on the least explored, smallest mass scales of primordial black holes (PBHs), which evaporate prior to Big Bang Nucleosynthesis (BBN). Our study examines the impact of Planck-mass relics on the allowed fraction of dark matter composed of PBHs ($f_{PBH}$), as well as on the resulting stochastic gravitational wave background and the formation of primordial binaries. We discuss how these binaries and early mergers lead to longer PBH lifetimes, extending the reach of the …