Tessera
Folgen

Bernardita Ried Guachalla

@bernarditaried.bsky.social

🌲 PhD Astrophysics student at Stanford University with a Fulbright scholarship 🎓 MSc in Physics Universidad de Chile 🔭 NOIRLab ambassador 🖤 Observational Cosmology Sometimes u'll find Spanish here 🇨🇱

57 Posts218 Follower62 Folgt
Walter Riquelme@wolteriquelme.bsky.social · last yr.

From last week arXiv! Check our new paper (with @rafalafelo.bsky.social) on how Cosmological Gravitational Waves could correlate with Large-Scale Structures, and its potential synergies with Primordial non-Gaussianity. arxiv.org/abs/2505.15084

Imprints of Large-Scale Structures in the Anisotropies of the Cosmological Gravitational Wave Background

We compute the cross-correlation between the anisotropies of the cosmological gravitational wave background (CGWB) and the galaxy density contrast. We show that the cross-correlation is non-zero due t...

arxiv.org

Bernardita Ried Guachalla@bernarditaried.bsky.social · last yr.

También se puede tener un evento en español y en Chile 😄! Solo revisar el link y cambiar a español :)

NSF–DOE Rubin Observatory@vrubinobs.bsky.social · last yr.

The world's First Look at imagery from NSF–DOE Rubin Observatory is coming in mid-2025 — and we want the whole world to join in the celebration!🥳 🔭 🧪 Help us bring Rubin to the world and join the global excitement by signing up to host a #RubinWatchParty! ➡️ rubinobservatory.org/news/host-fi...

Promotional graphic for Rubin Observatory's First Look Watch Parties
Bernardita Ried Guachalla@bernarditaried.bsky.social · last yr.

En Chile, ahora la cámara del Observatorio Verá Rubin abrió sus ojos. Es un momento histórico

NSF–DOE Rubin Observatory@vrubinobs.bsky.social · last yr.

Eye to the sky…on-sky engineering tests have begun at NSF–DOE Rubin Observatory using the world’s largest digital camera! 🔭🧪 After installing and testing the LSST Camera, we turned the telescope to the sky—a moment 20 years in the making! With that, Rubin #CommissioningNotes are back ✍️ 🧵

Around two dozen people sit and stand at a long desk with computer monitors out of view. Several people are smiling or have their mouths open in amazement. One person in the back has their arms raised in celebration.
Astrobites@astrobites.bsky.social · last yr.

From Abbé Whitford: Today’s bite looks at the final data release from the Kilo-Degree Survey, reporting a measurement of the clumpiness of the Universe as measured by weak gravitational lensing. 🔭✨☄️ astrobites.org/2025/04/03/sigma8-tension-kids-legacy-galaxyshear/

Is the sigma-8 tension being sheared away? Cosmology with weak lensing from KiDS

Today's bite looks at the final data release from the Kilo-Degree Survey, reporting a measurement of the clumpiness of the Universe as measured by weak gravitational lensing.

astrobites.org

Bernardita Ried Guachalla@bernarditaried.bsky.social · last yr.

Come and check our most recent paper on measuring the kinematic Sunyaev-Zel'dovich effect using @desisurvey.bsky.social luminous red galaxies and the latest dataset from @act-pol.bsky.social 😍 arxiv.org/abs/2503.19870

Backlighting extended gas halos around luminous red galaxies: kinematic Sunyaev-Zel'dovich effect from DESI Y1 x ACT

The gas density profile around galaxies, shaped by feedback and affecting the galaxy lensing signal, is imprinted on the cosmic microwave background (CMB) by the kinematic Sunyaev-Zel'dovich effect (k...

arxiv.org

Bernardita Ried Guachalla@bernarditaried.bsky.social · last yr.

Regarding the cuts to the science budget in the US, I wanted to highlight Chilean universities that offer graduate studies in astronomy. Because Chile will host 60% of the world’s ground-based telescopes by the end of the decade, they are leading many important research projects. Starting a 🧵:

Cristóbal Sifón@csifon.bsky.social · last yr.

Ya van más de 5 horas del corte de energía eléctrica desde Arica a Chiloé y pareciera que no volverá hasta mañana. Son 2700 km de una noche única para la observación astronómica desde la casa.

Bernardita Ried Guachalla@bernarditaried.bsky.social · last yr.

The Chilean Astronomical Society is collecting signatures to request the premature cancellation of the INNA project, which would contaminate the skies of advanced telescopes in Chile such as VLT, ELT and CTAO: docs.google.com/forms/d/e/1F...

Colecta de firmas para apoyar el Término Anticipado del Proyecto INNA@AES Andes

Este jueves 20 de febrero de 2025 se conocieron las observaciones del Ministerio de Medio Ambiente (MMA) del Gobierno de Chile al proyecto INNA, presentado por la empresa AES Andes, y cuyo Estudio de ...

docs.google.com