Tootfinder

The Schwarzschild-Couder Telescope for the Cherenkov Telescope Array Observatory
Luca Riitano (for the SCT Collaboration,CTAO Consortium), Justin Vandenbroucke (for the SCT Collaboration,CTAO Consortium), Zach Curtis-Ginsberg (for the SCT Collaboration,CTAO Consortium)
https://arxiv.org/abs/2509.05527

The Schwarzschild-Couder Telescope for the Cherenkov Telescope Array Observatory
The Cherenkov Telescope Array Observatory (CTAO) will greatly improve upon sensitivities in the field of very-high-energy gamma-ray astrophysics. The CTAO northern site (CTAO-North, La Palma, Spain) currently hosts LST-1 with the remaining three large-sized telescopes (LSTs) expected in mid-2026 and one medium-sized telescope (MST) expected in mid-2027. The CTAO southern site (CTAO-South, Paranal, Chile) expects the delivery of five small-sized telescopes (SSTs) and two MSTs in early 2026 with …

🇺🇦 Auf radioeins läuft...
Hubbabubbaklubb:
🎵 Mopedbart
#NowPlaying #Hubbabubbaklubb
https://talkboxmusic.bandcamp.com/track/hubbabubbaklubb-mopedbart-talkbox-remix
https://open.spotify.com/track/4g4dch4rJfI0Pp5WK5RYng

Hoping for a #flare: During the final days of our 2 week observation campaign with #GREGORSolarTelescope on Tenerife, scientists work remote from the “GREGOR Operations Center” at #MPSGoettingen

🇺🇦 #NowPlaying on KEXP's #DriveTime
Sufjan Stevens:
🎵 Should Have Known Better
#SufjanStevens
https://thehallsproject.bandcamp.com/track/sufjan-stevens-should-have-known-better-h-lls-remix
https://open.spotify.com/track/3AyuigFWbuirWHvidbMz8O

The Type II SN 2025pht in NGC 1637 - A Red Supergiant with Carbon-rich Circumstellar Dust as the First JWST Detection of a #Supernova Progenitor Star: https://iopscience.iop.org/article/10.3847/2041-8213/ae04de -> Webb Telescope unveils doomed star hidden in dust: https://news.northwestern.edu/stories/2025/10/webb-telescope-unveils-doomed-star-hidden-in-dust?fj=1 - new finding could help solve the mystery of the missing massive red supergiants.

Indirect dark matter searches with neutrino telescopes via energetic cosmic showers
Arindam Basu, Basabendu Barman, Arindam Das
https://arxiv.org/abs/2509.07570 https://

Indirect dark matter searches with neutrino telescopes via energetic cosmic showers
We explore the possibility that the high energy neutrino flux observed by terrestrial telescopes originates from dark matter (DM) annihilation. Specifically, we study a minimal, UV-complete $U(1)$ extension of the Standard Model with a Dirac DM candidate, whose annihilation into neutrinos proceeds exclusively through a $Z^\prime$ boson. By computing the annihilation cross section and comparing with the observed flux, we derive bounds on the model parameters. Additional constraints are obtained …

The very high energy view of gamma-ray bursts with the MAGIC telescopes
Alessio Berti (on behalf of the MAGIC Collaboration), \v{Z}eljka Bo\v{s}njak (on behalf of the MAGIC Collaboration), Alberto Castro-Tirado (on behalf of the MAGIC Collaboration), Stefano Covino (on behalf of the MAGIC Collaboration), Susumu Inoue (on behalf of the MAGIC Collaboration), Francesco Longo (on behalf of the MAGIC Collaboration), Serena Loporchio (on behalf of the MAGIC Collaboration), Davide Miceli (on …

The very high energy view of gamma-ray bursts with the MAGIC telescopes
Gamma-ray bursts (GRBs) are one of the main targets for the observations of the MAGIC telescopes. As a result of the effort in improving the sensitivity of the instrument and the automatic follow-up strategy, MAGIC detected two GRBs in the very-high-energy (VHE, $E>100$ GeV) range, namely GRB 190114C and GRB 201216C. In GRB 190114C ($z=0.42$), the data collected by MAGIC revealed a new emission component at sub-TeV energies in the afterglow of the GRB. The very rich multi-wavelength dataset, sp…

In-flight performance of the IXPE telescopes
Riccardo Ferrazzoli, Enrico Costa, Sergio Fabiani, Philip Kaaret, Stephen L. O'Dell, Brian D. Ramsey, Paolo Soffitta, Luca Baldini, Ronaldo Bellazzini, Alessandro Di Marco, Fabio La Monaca, Luca Latronico, Alberto Manfreda, Fabio Muleri, John Rankin, Carmelo Sgr\`o, Stefano Silvestri, Martin C. Weisskopf
https://…

In-flight performance of the IXPE telescopes
We present a comprehensive characterization of the on-orbit imaging performance of the three telescopes on board the Imaging X-ray Polarimetry Explorer (IXPE). Each telescope comprises a Wolter-I mirror module assembly and a Gas Pixel Detector focal-plane detector unit (DU). We analyze data from point-like X-ray sources and fit a composite point spread function (PSF) model that we compare with ground calibrations. We study the dependence of the PSF parameters and of the angular resolution, in t…

A broadband study of FRB20240114A with the Effelsberg 100-m radio telescope
P. Limaye, L. G. Spitler, N. Manaswini, J. Ben\'a\v{c}ek, F. Eppel, M. Kadler, L. Nicotera, J. Wongphechauxsorn
https://arxiv.org/abs/2510.08367

A broadband study of FRB20240114A with the Effelsberg 100-m radio telescope
We present Effelsberg 100-m telescope observations of the hyperactive repeating fast radio burst source FRB 20240110A, discovered by CHIME/FRB in January 2024. Using the Ultra BroadBand (UBB) receiver, spanning 1.3-6.0 GHz, we detected over 700 unique bursts across four observing epochs. A comprehensive analysis of their temporal and spectral properties reveals four distinct spectro-temporal morphologies, including simple, complex and frequency-drifting structures. No bursts were detected acros…

Conceptual Opto-Mechanical design of SHARP: a near-infrared multi-mode spectrograph conceived for the next-generation telescopes
H. Mahmoodzadeh, P. Saracco, P. Conconi, B- Saggin, D- Scaccabarozzi, I. Di Antonio, M. Riva, E. Molinari, C. Arcidiacono, I. Arosio, E. Cascone, V. Cianniello, V. De Caprio, G. Di Rico, B. Di Francesco, C- Eredia, P. Franzetti, M. Fumana, D. Greggio, E. Portaluri, M. Scalera

Conceptual Opto-Mechanical design of SHARP: a near-infrared multi-mode spectrograph conceived for the next-generation telescopes
The next generation of Extremely Large Telescopes (ELTs), with their wide apertures and advanced Multi-Conjugate Adaptive Optics (MCAO) systems, will provide unprecedented sharp and deep observations, even surpassing the capabilities of James Webb Space Telescope (JWST). SHARP, a near-infrared (0.95-2.45 μm) spectrograph, is designed to optimally exploit the collecting area and angular resolution of these forthcoming ELTs, and specifically optimized for the MCAO unit MORFEO at the ELT. SHARP i…