Tootfinder

SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization
B. Cordier, J. Y. Wei, N. R. Tanvir, S. D. Vergani, D. B. Malesani, J. P. U. Fynbo, A. de Ugarte Postigo, A. Saccardi, F. Daigne, J. -L. Atteia, O. Godet, D. Gotz, Y. L. Qiu, S. Schanne, L. P. Xin, B. Zhang, S. N. Zhang, A. J. Nayana, L. Piro, B. Schneider, A. J. Levan, A. L. Thakur, Z. P. Zhu, G. Corcoran, N. A. Rakotondrainibe, V. D'Elia, D. Turpin, J. F. Agui Fernandez, M. A. Aloy, J. An, M. Bai, S.…

SVOM GRB 250314A at z $\simeq$ 7.3: an exploding star in the era of reionization
Most long Gamma-ray bursts originate from a rare type of massive stellar explosion. Their afterglows, while rapidly fading, can be initially extremely luminous at optical/near-infrared wavelengths, making them detectable at large cosmological distances. Here we report the detection and observations of GRB 250314A by the SVOM satellite and the subsequent follow-up campaign with the near-infrared afterglow discovery and the spectroscopic measurements of its redshift z $\simeq$ 7.3 . This burst ha…

Systematic bias in LISA ringdown analysis due to waveform inaccuracy
Lodovico Capuano, Massimo Vaglio, Rohit S. Chandramouli, Chantal L Pitte, Adrien Kuntz, Enrico Barausse
https://arxiv.org/abs/2506.21181

Systematic bias in LISA ringdown analysis due to waveform inaccuracy
Inaccurate modeling of gravitational-wave signals can introduce systematic biases in the inferred source parameters. As detector sensitivities improve and signals become louder, mitigating such waveform-induced systematics becomes increasingly important. In this work, we assess the systematic biases introduced by an incomplete description of the ringdown signal from massive black hole binaries in the LISA band. Specifically, we investigate the impact of mode truncation in the ringdown template.…

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Ab 500 Euro können sich Bürgerinnen und Bürger aus #Reinsdorf und

Windenergie: Anwohner sollen finanziell von neuem Windpark profitieren
Hier finden Sie Informationen zu dem Thema „Windenergie“. Lesen Sie jetzt „Anwohner sollen finanziell von neuem Windpark profitieren“.

Apple says it blocked $2 billion in App Store fraud last year https://therecord.media/apple-billions-app-store-fraud

Did you see the reenactment of the Sunrise III flight with a cute little model at the kids' show? https://academiccloud.social/@imprs_solar/114723459947791480 Meanwhile, all our visitors of course also got to see the real Sunrise III observatory up close. Cer…

Probing the ionizing photon output of galaxies near cosmic dawn with the patchy kSZ effect
Garett Lopez, Anson D'Aloisio, Christopher Cain
https://arxiv.org/abs/2507.17817 h…

Probing the ionizing photon output of galaxies near cosmic dawn with the patchy kSZ effect
A key result from JWST's first cycles is that galaxy formation was well underway by $z=10$. The implications of these early galaxies for reionization are less clear, however. The CMB is one of the few windows into the ionization state of the IGM during reionization's first half, providing an important probe of the ionizing photon sources at those times. Meanwhile, measurements of the Lyman-$α$ forest in the spectra of high-$z$ quasars have improved to the level of tightly constraining the timi…

Hair imprints of the gravitational decoupling and hairy black hole spectroscopy
V. F. Guimar\~aes, R. T. Cavalcanti, R. da Rocha
https://arxiv.org/abs/2506.20044

Hair imprints of the gravitational decoupling and hairy black hole spectroscopy
Hairy black holes by gravitational decoupling (GD) are probed to derive the gravitational waveform produced by perturbation theory applied to these compact objects. Using the Regge-Wheeler and Zerilli equations governing the metric perturbations and applying a higher-order WKB method, the quasinormal modes (QNMs) are computed and discussed. Compared to the QNMs produced in the ringdown phase of Reissner-Nordström black hole solutions, it yields a clear physical signature of primary hair imprin…