Tootfinder

In which the Central Bureau for Astronomical Telegrams of the IAU dampens expectations for #comet C/2023 A3 (Tsuchinshan-ATLAS): http://www.cbat.eps.harvard.edu/iau/cbet/005400/CBET005404.txt - the peak is now predicted to be 2.2 mag. at best, perhaps with some forward-scatter enhancement but OTOH when the elongation is small. Even another NEOWISE-style show later in October looks pretty doubtful now ... but then again comets are nearly always good for surprises, and positive ones, too. Like NEOWISE delivered in 2020, so stay tuned.

Why Boredom Benefits Kids and How to Cultivate It This Summer - The New York Times
https://www.nytimes.com/2023/06/19/well/family/kids-summer-boredom.html

Why Boredom Benefits Kids and How to Cultivate It This Summer
A reminder to parents soldiering through the summer: Boredom has its virtues.

About 100 women a day left Texas for reproductive care in 2023.

Extending class group action attacks via sesquilinear pairings
Joseph Macula, Katherine E. Stange
https://arxiv.org/abs/2406.10440 https://

Extending class group action attacks via sesquilinear pairings
We introduce a new tool for the study of isogeny-based cryptography, namely pairings which are sesquilinear (conjugate linear) with respect to the $\mathcal{O}$-module structure of an elliptic curve with CM by an imaginary quadratic order $\mathcal{O}$. We use these pairings to study the security of problems based on the class group action on collections of oriented ordinary or supersingular elliptic curves. This extends work of both (Castryck, Houben, Merz, Mula, Buuren, Vercauteren, 2023) and…

I-band photometry of the quiescent black hole X-ray nova GROJ0422 32=V518 Per: modelling of the orbital light curve and estimation of the black hole mass
A. Cherepashchuk, T. Khruzina, K. Atapin
https://arxiv.org/abs/2406.05208

I-band photometry of the quiescent black hole X-ray nova GROJ0422+32=V518 Per: modelling of the orbital light curve and estimation of the black hole mass
We present new photometric observations of the X-ray nova GROJ0422+32 (V518 Per) carried out in the I$_c$ band over 14 nights in 2020 -- 2023. We had to revise the orbital period of the system, the new value $P_{\rm orb}=5^{\rm h}04^{\rm m}35.50^{\rm s} \pm 0.04^{\rm s}$ is about one minute shorter than the period by Webb et al. (2000) but close to the result reported earlier by Filippenko et al. (1995). The obtained folded light curve has a regular shape with a clear ellipticity effect and sig…

Measurement of the integrated luminosity of the data collected at 3.773 GeV by BESIII from 2021 to 2024
BESIII Collaboration, et al.
https://arxiv.org/abs/2406.05827

Measurement of the integrated luminosity of the data collected at 3.773 GeV by BESIII from 2021 to 2024
We present a measurement of the integrated luminosity of $e^+e^-$ collision data collected with the BESIII detector at the BEPCII collider at a center-of-mass energy of $E_{\rm cm} = 3.773$~GeV. The integrated luminosities of the data sets taken from December 2021 to June 2022, from November 2022 to June 2023, and from October 2023 to February 2024 are determined to be $4.995 \pm 0.019$~fb$^{-1}$, $8.157 \pm 0.031$~fb$^{-1}$, and $4.191 \pm 0.016$~fb$^{-1}$, respectively, by analyzing large ang…