Tootfinder

Azimuthal Misalignments in Stellar Warp Structure as Dynamical Tracers of Mergers in Milky Way-like Galaxies
Lekshmi Thulasidharan, Elena D'Onghia, Robert Benjamin
https://arxiv.org/abs/2510.04194 …

Azimuthal Misalignments in Stellar Warp Structure as Dynamical Tracers of Mergers in Milky Way-like Galaxies
We investigate the origin of warps in stellar disks using high-resolution Milky Way analogs from the IllustrisTNG50 simulation. Focusing on galaxies that experienced a major merger, we identify a characteristic azimuthal misalignment between the warp structures of stellar populations formed before and after the merger. This misalignment persists even after correcting for differential rotation, suggesting it is a dynamical imprint of the merger rather than a consequence of internal kinematics. I…

The vector potential of a steady azimuthal current density. Once again
Antonio O. Bouzas
https://arxiv.org/abs/2510.11663 https://arxiv.org/pdf/2510.11663

The vector potential of a steady azimuthal current density. Once again
We give an integral expression for the vector potential of a time-independent, steady azimuthal current density. Our derivation is substantially simpler and somewhat more general than others given in the literature. As an illustration, we recover the results for the vector potential of a circular current loop as an orthogonal expansion in spherical and cylindrical coordinates. Additionally, we obtain closed analytical expressions for the vector potential and the magnetic induction of a circular…

Eternal inflation bubble collision signature on CMB remote dipole and quadrupole fields
Hongbo Cai, Pengjie Zhang, Yilun Guan
https://arxiv.org/abs/2510.12134 https://

Eternal inflation bubble collision signature on CMB remote dipole and quadrupole fields
The remote dipole and quadrupole fields (RDF/RQF) encode information about the observable universe as seen from remote places within our past light cone. Sensitive to the superhorizon inhomogeneites, they provide a unique way to probe physics at the largest scales, bypassing the limitations of cosmic variance inherent in the primary cosmic microwave background (CMB). In this work, we focus on the bubble collision predicted by the eternal inflation theory, which can leave distinct azimuthally sy…

Flavor, transverse momentum, and azimuthal dependence of charged pion multiplicities in SIDIS with 10.6 GeV electrons
Hall C SIDIS Collaboration, P. Bosted, H. Bhatt, S. Jia, W. Armstrong, D. Dutta, R. Ent, D. Gaskell, E. Kinney, H. Mkrtchyan, S. Ali, R. Ambrose, D. Androic, C. Ayerbe Gayoso, A. Bandari, V. Berdnikov, D. Bhetuwal, D. Biswas, M. Boer, E. Brash, A. Camsonne, M. Cardona, J. P. Chen, J. Chen, M. Chen, E. M. Christy, S. Covrig, S. Danagoulian, M. Diefenthaler, B. Duran, C. …

Flavor, transverse momentum, and azimuthal dependence of charged pion multiplicities in SIDIS with 10.6 GeV electrons
Measurements of SIDIS multiplicities for $π^+$ and $π^-$ from proton and deuteron targets are reported on a grid of hadron kinematic variables $z$, $P_{T}$, and $ϕ^{*}$ for leptonic kinematic variables in the range $0.3

Towards polarization-enhanced PET: Study of random background in polarization-correlated Compton events
Ana Marija Ko\v{z}uljevi\'c, Tomislav Bokuli\'c, Darko Gro\v{s}ev, Siddharth Parashari, Luka Paveli\'c, Marinko Rade, Marijan \v{Z}uvi\'c, Mihael Makek
https://arxiv.org/abs/2510.11504

Towards polarization-enhanced PET: Study of random background in polarization-correlated Compton events
Positron Emission Tomography (PET) is a medical imaging modality that utilizes positron-emitting isotopes, such as Ga-68 and F-18, for many diagnostic purposes. The positron annihilates with an electron from the surrounding area, creating two photons of 511 keV energy and opposite momenta, entangled in their orthogonal polarizations. When each photon undergoes a Compton scattering process, the difference of their azimuthal scattering angles reflects the initial orthogonality of their polarizati…

#30DayMapChallenge 🗺️ Day 2️⃣: Lines
This map shows all the airports with direct flights from #Singapore’s 🇸🇬 #ChangiAirport (

Exploring the Origin of Anisotropy in Small Systems: From Symmetric (O O) to Asymmetric (d Au) Collisions
Zhengxi Yan (for the STAR Collaboration)
https://arxiv.org/abs/2510.03454

Exploring the Origin of Anisotropy in Small Systems: From Symmetric (O+O) to Asymmetric (d+Au) Collisions
This contribution reports STAR measurements of azimuthal anisotropies in produced particle distributions of the d+Au and $^{16}$O+$^{16}$O collisions at $\sqrt{s_{NN}} = 200$ GeV, probing the origin of collectivity in small systems. We test the hydrodynamic response of the produced medium by comparing these systems with vastly different initial geometries. The measured elliptic ($v_2$) and triangular ($v_3$) anisotropies, and their event-by-event fluctuations, scale robustly with initial-state …

3D Structure of Jet-induced Diffusion Wake
Zhong Yang, Xin-Nian Wang
https://arxiv.org/abs/2509.24315 https://arxiv.org/pdf/2509.24315

3D Structure of Jet-induced Diffusion Wake
Jet-induced diffusion wake in heavy-ion collisions has a unique 3D structure as manifested in the jet-hadron correlations in rapidity and azimuthal angle. The rapidity asymmetry observable in dijets provides a robust measurement of the diffusion wake because it essentially background-free.

Observation of long-range collective flow in OO and NeNe collisions and implications for nuclear structure studies
CMS Collaboration
https://arxiv.org/abs/2510.02580 https://

Observation of long-range collective flow in OO and NeNe collisions and implications for nuclear structure studies
The long-range collective flow of particles produced in oxygen-oxygen (OO) and neon-neon (NeNe) collisions is measured with the CMS detector at the CERN LHC. The data samples were collected at a center-of-mass energy per nucleon pair of 5.36 TeV, with integrated luminosities of 7 nb$^{-1}$ and 0.8 nb$^{-1}$ for OO and NeNe collisions, respectively. Two- and four-particle azimuthal correlations are measured over nearly five units of pseudorapidity. Significant elliptic ($v_2$) and triangular ($v…

Diffusion wake: a distinctive consequence of the Mach-cone wake induced by supersonic jets in high-energy heavy-ion collisions
Zhong Yang, Xin-Nian Wang
https://arxiv.org/abs/2509.23780

Diffusion wake: a distinctive consequence of the Mach-cone wake induced by supersonic jets in high-energy heavy-ion collisions
In this Research Perspective, we briefly review the diffusion wake, a distinctive consequence of the Mach-cone wake induced by the supersonic jets in ultra-relativistic heavy-ion collisions. The diffusion wake depletes soft hadrons in the direction opposite to the propagating jet. According to coupled transport and hydrodynamic simulations, a valley in the 2-dimensional jet-hadron correlation in azimuthal angle and rapidity arises on the top of the multiple parton interaction ridge as an unambi…