Tootfinder

Timing and spectral variability in 2S 1417-624 observed with Insight-HXMT
Qi Liu, Lingda Kong, Can G\"ung\"or, Lorenzo Ducci, Long Ji, Wei Wang, Xiaohang Dai, Andrea Santangelo
https://arxiv.org/abs/2506.13557

Timing and spectral variability in 2S 1417-624 observed with Insight-HXMT
We present the results of the spectral and timing analyses of the accreting X-ray pulsar, 2S 1417-624, during the 2018 and 2021 outbursts with Insight-HXMT. We find that the pulse profiles in all energy bands exhibit clear double-peaked structures at low flux states. In the 1-10 keV band, the pulse profiles evolve from double to triple peaks at a flux level of $\sim$4.1$\ \times \ 10^{-9}$ erg cm$^{-2}$ s$^{-1}$, and from triple to quadruple peaks at $\sim$6.4$\ \times \ 10^{-9}$ erg cm$^{-2}$ …

This https://arxiv.org/abs/2504.13658 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

SRGAJ230631.0+155633: an extremely X-ray luminous, heavily obscured, radio-loud quasar at z=0.44 discovered by SRG/ART-XC
We report on a detailed study of a luminous, heavily obscured ($N_{\rm H} \sim 2 \times 10^{23}$ cm$^{-2}$), radio-loud quasar SRGAJ230631.0+155633, discovered in the 4--12 keV energy band by the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory during the first two years of its all-sky X-ray survey in 2020--2021. The object is located at $z=0.4389$ and is a type 2 AGN according to optical spectroscopy (SDSS, confirmed by DESI). We combine radio-to-X-ray data, including near-simulta…

This https://arxiv.org/abs/2402.13117 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCG_…

Faster, Deterministic and Space Efficient Subtrajectory Clustering
Given a trajectory $T$ and a distance $Δ$, we wish to find a set $C$ of curves of complexity at most $\ell$, such that we can cover $T$ with subcurves that each are within Fréchet distance $Δ$ to at least one curve in $C$. We call $C$ an $(\ell,Δ)$-clustering and aim to find an $(\ell,Δ)$-clustering of minimum cardinality. This problem variant was introduced by Akitaya $et$ $al.$ (2021) and shown to be NP-complete. The main focus has therefore been on bicriteria approximation algorithms, a…

This https://arxiv.org/abs/2505.24586 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

All-sky search for individual Primordial Black Hole bursts with LHAASO
Primordial Black Holes~(PBHs) are hypothetical black holes with a wide range of masses that formed in the early universe. As a result, they may play an important cosmological role and provide a unique probe of the early universe. A PBH with an initial mass of approximately $10^{15}$~g is expected to explode today in a final burst of Hawking radiation. In this work, we conduct an all-sky search for individual PBH burst events using the data collected from March 2021 to July 2024 by the Water Che…

Regalo #llibres tècnics, preferiblement a #Osona / #Vic , però les poblacions de #Catalunya al voltant de la R3 fins a #Barcelona també les considero (no tinc cotxe i no vull haver d'enviar paquets).
La editorial va cometre alguns errors i en tinc duplicats. Els que regalo:
- Math for Security
- The Shape of Data
- Statistics Done Wrong
- The Rust Programming Language (2021 Edition)
Si pot ser prefereixo que els receptors siguin gent que no es pugui permetre gaires luxes, per motius d'equitat.
S'agreixen reenviaments d'aquest missatge :) .
#Giveaway #donation #Donació

#Regalo ⁨#libros técnicos, preferiblement en #Osona⁩ / ⁨#Vic⁩ , pero los pueblos de ⁨#Catalunya⁩ alrededor de la R3 hasta ⁨#Barcelona⁩ también los considero (no tengo coche y no quiero tener que enviar paquetes).
La editorial cometió algunos errores y tengo duplicados. Los que regalo:
- Math for Security
- The Shape of Data
- Statistics Done Wrong
- The Rust Programming Language (2021 Edition)
A poder ser prefiero donar a quien por lo general no pueda permitirse muchos lujos, por motivos de equidad.
⁨#Giveaway⁩ ⁨#donation⁩ ⁨#Donación