Bernardita Ried Guachalla
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bernarditaried.bsky.social
Bernardita Ried Guachalla
@bernarditaried.bsky.social
200 followers 61 following 57 posts
🌲 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 🇨🇱
Posts Replies Media Videos
Reposted by Bernardita Ried Guachalla
wolteriquelme.bsky.social
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
June 2, 2025 at 4:05 PM
bernarditaried.bsky.social
My photographic work is now on display at Stanford University, in the Kavli Institute for Particle Astrophysics and Cosmology 😍
May 30, 2025 at 1:18 AM
bernarditaried.bsky.social
También se puede tener un evento en español y en Chile 😄! Solo revisar el link y cambiar a español :)
vrubinobs.bsky.social NSF–DOE Rubin Observatory @vrubinobs.bsky.social · Apr 24
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
April 24, 2025 at 7:38 PM
bernarditaried.bsky.social
En Chile, ahora la cámara del Observatorio Verá Rubin abrió sus ojos. Es un momento histórico
vrubinobs.bsky.social NSF–DOE Rubin Observatory @vrubinobs.bsky.social · Apr 17
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.
April 18, 2025 at 1:48 AM
Reposted by Bernardita Ried Guachalla
astrobites.bsky.social
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
April 4, 2025 at 4:32 AM
bernarditaried.bsky.social
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
April 9, 2025 at 4:57 PM
bernarditaried.bsky.social
¡La carta está siendo informada por los medios de comunicación chilenos!
April 4, 2025 at 10:29 PM
bernarditaried.bsky.social
Carta de miles de astrónomos de todo el mundo solicitándole a las autoridades chilenas que se protejan los cielos de Chile y su legado astronómico.
April 4, 2025 at 4:55 AM
bernarditaried.bsky.social
¡Orgullo Chileno! 🇨🇱

Grande Enrique Paillas 💪
March 19, 2025 at 10:30 PM
Reposted by Bernardita Ried Guachalla
act-simonsobs-es.bsky.social
¡La nueva página del Observatorio Simons ya está disponible! Por ahora solo en inglés, pronto viene la versión en castellano. ¿Qué les parece? ¡Déjennos sus comentarios!

simonsobservatory.org/institutions/
Institutions |
simonsobservatory.org
March 13, 2025 at 10:42 PM
bernarditaried.bsky.social
The current situation for international Fulbrighters right now. This is an amazing program that has enabled significant advancements in astronomy in both Chile and the US. I hope they don't end it 🙏
March 14, 2025 at 4:17 PM
Reposted by Bernardita Ried Guachalla
astroroyalscot.bsky.social
Eclipse preppers assemble! It's time to buy some solar eclipse glasses and set notifications in your diary.

🗓️13/14 Mar: Lunar Eclipse
🗓️29 Mar: Partial Solar Eclipse

Time/spectacle depends on your location 🔭🧪

↙️Lunar: www.timeanddate.com/eclipse/luna...
↘️Solar: www.timeanddate.com/eclipse/sola...
A map of the globe with bands indicating where the lunar eclipse will be visible. It's a total eclipse across North And South America and some of Western Europe. A map of the globe with bands marking where the solar eclipse will be visit. It's a partial eclipse everywhere, with the most of the Sun obscured in eastern Canada and Greenland. Scandinavia, the UK and Western Europe will see about a third of the Sun obscured.
March 9, 2025 at 11:38 AM
bernarditaried.bsky.social
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 🧵:
March 6, 2025 at 2:19 AM
Reposted by Bernardita Ried Guachalla
act-simonsobs-es.bsky.social
Hoy publicamos dos artículos en el repositorio #arXiv. En el primero de ellos (arxiv.org/abs/2503.00636) discutimos los principales objetivos científicos de nuestro LAT (recuerden: Large Aperture Telescope, Telescopio de Gran Apertura), que observará la mitad del cielo
Mapa del cielo mostrando el área que observará el Observatorio Simons en comparación a DES, DESI, Euclid y Rubin.
March 4, 2025 at 11:13 PM
Reposted by Bernardita Ried Guachalla
jwstfeed.bsky.social
New JWST image dropped: NGC 2283.
ESA chose this spiral galaxy to be Picture Of The Month (POTM) for February 2025.

ESA/Webb, NASA & CSA, A. Leroy
esawebb.org/images/potm2...
A spiral galaxy seen close up and almost face on. It is filled with puffy, patchy clouds of hot gas and dust. Red, orange and yellow colours indicate light emitted by different particles. The brightest colours are in the centre and along the two spiral arms, which wind out from the centre. Star clusters hide in the gas along the arms. A few large, bright white stars are prominent in the foreground, near to us.
February 28, 2025 at 4:29 PM
bernarditaried.bsky.social
Los amigos de @almaobservatory.bsky.social me enviaron este regalo, el que justo llegó unos días antes de mi cumpleaños 😍

Para los que no saben, ALMA es uno de los radiotelescopios más importantes del mundo, y ¡está en Chile! 🇨🇱🌟

Ojalá pronto pueda visitarlos 🌌
February 27, 2025 at 10:57 PM
bernarditaried.bsky.social
I was not expecting this paper today when I was reading the ArXiv 😮
February 26, 2025 at 7:02 PM
bernarditaried.bsky.social
💙🌌
February 26, 2025 at 3:53 AM
Reposted by Bernardita Ried Guachalla
csifon.bsky.social
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.
February 26, 2025 at 12:31 AM
Reposted by Bernardita Ried Guachalla
act-simonsobs-es.bsky.social
El Observatorio Simons está ubicado en el mismo lugar que estaba ACT antes: Cerro Toco, en pleno desierto de Atacama en el norte de Chile, 50 km al este de San Pedro de Atacama, a 5200 msnm. ¿Por qué específicamente ahí? 👀 1/4
Mapa de Sudamérica resaltando la ubicación del Observatorio Simons en el desierto de Atacama, norte de Chile. Crédito: Google.
February 24, 2025 at 12:04 AM
bernarditaried.bsky.social
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
February 23, 2025 at 3:41 AM
bernarditaried.bsky.social
Esto es lo que AES Andes responde a un medio internacional con respecto a los telescopios en Chile 😵‍💫
February 22, 2025 at 9:56 PM
bernarditaried.bsky.social
Comunicado de la Sociedad Chilena de Astronomía/Statement from the Chilean Astronomical Society:
sochias.cl/comunicado-s...
February 22, 2025 at 9:02 PM
bernarditaried.bsky.social
Maria Teresa Ruiz se manifiesta con respecto sobre las observaciones del Ministerio de Medio Ambiente que hicieron el proyecto INNA de AES Andes 🚫
February 22, 2025 at 6:12 PM
bernarditaried.bsky.social
Le solicito al Servicio de Evaluación Ambiental que rechace de manera temprana el proyecto INNA de AES Andes para que la empresa reubique el proyecto 🚫

Abro hilo (y segunda parte en los comentarios)
February 22, 2025 at 1:12 AM