Tootfinder

a casket containing relics from Bach’s tomb

A dangerous shift is happening online.
All around the world, governments are quietly rewriting the rules of internet access.
Soon, privacy and anonymity online may become relics of the past.
The UK’s newly enacted Online Safety Act marks a fundamental shift.
You now need to verify your identity simply to watch a video, visit a website, or share your thoughts.
The Act mandates strict age verification and identity checks for websites and platforms considered to ho…

Show Your Papers: The Internet Is About to Change Forever — Ludlow Institute
A crackdown sweeping the globe is replacing the free internet with government surveillance

Gaussian Planck Relics are Ruled-Out as Dark Matter by LIGO
Oem Trivedi, Abraham Loeb
https://arxiv.org/abs/2509.20533 https://arxiv.org/pdf/2509.20533

Gaussian Planck Relics are Ruled-Out as Dark Matter by LIGO
Quantum Gravity models suggest that singularities in gravitational collapse can be replaced by bounces, leading to the formation of Planck star remnants (PSR) that survive as stable relics once the black holes evaporate to the Planck mass. Recently, we proposed that such relics can be a viable candidate for dark matter. Here we show that LIGO's upper limit on the gravitational wave background rules out a formation pathway of Planck mass relics as dark matter from Gaussian initial conditions. Th…

A Linearly Polarized Merger Shock Down to 550 MHz: A uGMRT Study of the Merging Cluster Abell 746
Arpan Pal, Ruta Kale, Reinout J. van Weeren
https://arxiv.org/abs/2508.19516 ht…

A Linearly Polarized Merger Shock Down to 550 MHz: A uGMRT Study of the Merging Cluster Abell 746
Radio relics, arc-like polarized sources with highly aligned magnetic fields, are typically found on the outskirts of merging galaxy clusters. The magneto-ionic media responsible for the significant coherence observed in radio relics remain poorly understood. Low-frequency measurements of radio relics are essential for constraining depolarization models, which provide crucial insights into the magnetic field distribution. However, these measurements are challenging due to the emission propertie…

Probing the Moon from Future Asteroid Impacts: A Review
Yifei Jiao, Bin Cheng, Hexi Baoyin
https://arxiv.org/abs/2509.01436 https://arxiv.org/pdf/2509.0143…

Probing the Moon from Future Asteroid Impacts: A Review
The Earth--Moon system has been experiencing impacts from asteroids and comets for billions of years. The Moon, as an airless body, has preserved a distinct record of these events in form of impact craters and ejecta deposits, offering valuable insights into the impact history and surface evolution of the Moon. However, the ancient impact relics can only provide limited information to the lunar interior structure, with an absence of the Moon's immediately dynamic response to the impact events. …

On the (Im)possibility of Electrically Charged Planck Relics
Stefano Profumo
https://arxiv.org/abs/2509.12520 https://arxiv.org/pdf/2509.12520

On the (Im)possibility of Electrically Charged Planck Relics
I revisit whether black-hole remnants, from sub-Planckian compact objects to Planck relics and up to (super)massive black holes, can preserve Standard-Model (SM) electric charge. Two exterior-field mechanisms -- Coulomb-focused capture from ambient media and QED Schwinger pair production -- robustly neutralize such objects across cosmic history. I first derive the general capture rate including both Coulomb and gravitational focusing, and sum the stepwise discharge time in closed form via the t…

Origin of the ~150 kpc radio filament in galaxy ESO 137-006
Toushif Alam, Kunal P. Mooley, Kartick C. Sarkar
https://arxiv.org/abs/2507.23026 https://arxiv…

Origin of the ~150 kpc radio filament in galaxy ESO 137-006
Sensitive wide-field radio surveys have started uncovering many filamentary structures associated with the jets and lobes of radio galaxies, radio relics in galaxy clusters, and tailed galaxies. Although limited theoretical investigations on the origin of the filamentary structures have associated these filaments with astrophysical shocks and interactions with intracluster magneto-ionic media, more quantitative studies are needed to ascertain their precise nature and origin. Recent MeerKAT obse…

I'm prejudiced towards barbed wire. Whenever I see a recent house, with children playing in the front yard, surrounded by a fancy fence with a barbed wire on top, I can't help but think "a nazi".
However, the brick fences with pieces of broken glass on top are even worse. But I really do hope these are only historical relics these days.

On The Road - To Xi’An/ Mordern Relics
在路上 - 去西安/ 现代遗风
📷 Pentax MX
🎞️Fujifilm Neopan F, expired 1993
#filmphotography #Photography #blackandwhite

Toward 48 dB Spin Squeezing and 96 dB Signal Magnification for Cosmic Relic Searches with Nuclear Spins
Marios Galanis, Onur Hosten, Asimina Arvanitaki, Savas Dimopoulos
https://arxiv.org/abs/2508.20520

Toward 48 dB Spin Squeezing and 96 dB Signal Magnification for Cosmic Relic Searches with Nuclear Spins
We recently showed that macroscopic nuclear spin ensembles prepared in coherent spin states can dramatically enhance the interaction rates of weakly interacting cosmic relics-such as dark matter and the cosmic neutrino background-through collective quantum effects analogous to Dicke superradiance, where the de-excitation and excitation rates scale as the square of the number of spins, $N^2$. We thus coined these processes superradiant interactions. In this paper, we propose a protocol to realiz…

The Effective Field Theory of Large Scale Structure for Mixed Dark Matter Scenarios
Francesco Verdiani, Emanuele Castorina, Ennio Salvioni, Emiliano Sefusatti
https://arxiv.org/abs/2507.08792

The Effective Field Theory of Large Scale Structure for Mixed Dark Matter Scenarios
We initiate a systematic study of the perturbative nonlinear dynamics of cosmological fluctuations in dark sectors comprising a fraction of non-cold dark matter, for example ultra-light axions or light thermal relics. These mixed dark matter scenarios exhibit suppressed growth of perturbations below a characteristic, cosmologically relevant, scale associated with the microscopic nature of the non-cold species. As a consequence, the scale-free nonlinear solutions developed for pure cold dark mat…

An improved model for the effect of correlated Si-III absorption on the one-dimensional Lyman-$\alpha$ forest power spectrum
Ke Ma, James S. Bolton, Vid Irsic, Prakash Gaikwad, Ewald Puchwein
https://arxiv.org/abs/2509.08613

An improved model for the effect of correlated Si-III absorption on the one-dimensional Lyman-$α$ forest power spectrum
We present an analysis of Si-III absorption and its effect on the 1D Ly$α$ forest power spectrum using the Sherwood-Relics hydrodynamical simulation suite. In addition to the well-understood oscillations arising from the Ly$α$--Si-III cross correlation, we find an enhancement in small-scale power that has been ignored in previous studies. We therefore develop a new analytical fitting function that captures two critical effects that have previously been neglected: distinct Ly$α$ and Si-III li…