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Sabina Sagynbayeva

@sabinastro.bsky.social
1.2K followers 276 following 273 posts

(astro)Physics PhD. Astrobites alum. From Kazakhstan 🇰🇿. She/her. Musical theater nerd, so pretty much insufferable. Statistics, planets, and stellar cartography. ssagynbayeva.github.io

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Reposted by Sabina Sagynbayeva
Conaire Deagan @conairedeagan.bsky.social · 20/05/2026
Happy to say that my second paper “Astrometric exoplanet detection survives solar-like stellar contamination” has been accepted by MNRAS and is now up on the arxiv: arxiv.org/pdf/2605.18953 Takeaway: Missions like TOLIMAN and SHERA could find earth-twins assuming solar like noise.
arxiv.org
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Sabina Sagynbayeva @sabinastro.bsky.social · 17/04/2026
PhDone :)
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Johanna Vos @johannavos.bsky.social · 27/03/2026
TWO recently accepted papers on arxiv today from our group, led by PhD students @maddielam.bsky.social and @astrotoole.bsky.social. If you like brown dwarfs, variability, clouds, aurorae and/or magnetic spots there is something here for you! 👀 arxiv.org/abs/2603.24662 arxiv.org/abs/2603.24663
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Sabina Sagynbayeva @sabinastro.bsky.social · 26/03/2026
hey all, I am excited to share that I will have my defense on April 17th! Let me know if you’d like a zoom link for the open part! :)
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Sabina Sagynbayeva @sabinastro.bsky.social · 11/03/2026
i’m excited to share something that people already know: @philip-armitage.bsky.social ‘s 2011 and 2024 review papers are AWESOME.
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Sabina Sagynbayeva @sabinastro.bsky.social · 06/03/2026
it me
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Astrobites @astrobites.bsky.social · 01/03/2026
From Tori Bonidie and Magnus L’Argent: Giant mirrors in space to create sunlight at night and an AI data center made up of 1-million satellites are undergoing regulatory approval. How did we get here? ⚛️ 🔭 ☄️ 🧪 astrobites.org/2026/02/26/reflect-orbital-ai-data-center/
astrobites.org
Two satellite proposals threaten dark and quiet skies worldwide
Giant mirrors in space to create sunlight at night and an AI data center made up of 1-million satellites are undergoing regulatory approval. How did we get here?
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Stephen Kane @exocytherean.bsky.social · 04/02/2026
I know it's called the "Habitable Worlds Observatory", but what about uninhabitable worlds? Check out the below paper to learn what HWO can teach us about our sister planet and its analogs that are scattered among the stars! arxiv.org/abs/2602.02728
arxiv.org
Imaging Venus-like Worlds: Spectral, Polarimetric, and UV Diagnostics for the Habitable Worlds Observatory
Understanding planetary habitability requires a comparative approach that explores the divergent evolutionary outcomes of Earth and Venus. The Habitable Worlds Observatory (HWO) will be uniquely posit...
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Reposted by Sabina Sagynbayeva
Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social · 12/02/2026
Let me recommend grabbing a cup of tea & reading this really thoughtful piece from the inimitable @hogg.bsky.social on moderating AI/LLM use in astrophysics. 🔭 "the real question we face is not ... how we do astrophysics. It is the question of why we do astrophysics." 📖: arxiv.org/pdf/2602.10181
A screenshot of text from a paper that reads:

One idea or rule of thumb is perhaps that we should or could interact with an LLM only in the same ways that we would interact with a non-coauthor colleague. You might ask your colleague for help finding something in the literature, but you wouldn’t ask your non-coauthor colleague to write the introduction of the paper you are writing. You might ask your colleague to help speed up your code, but you wouldn’t
ask your colleague to write your code. Another idea is that, given our respect for our readers, we shouldn’t ask them to engage with something that took way less time to write than to read. I like these ideas; maybe they could evolve into conventions or community-supported best practices.
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Daniel Apai @danielapai.bsky.social · 11/01/2026
Our NASA’s Pandora space telescope is on orbit!! Congrats to the team and NASA, LSP, SpaceX, and everyone who helped to get to this exciting point! What will Pandora do and why is it important for exoplanet science? Read my short article on this: theconversation.com/nasas-pandor...
theconversation.com
NASA’s Pandora telescope will study stars in detail to learn about the exoplanets orbiting them
The findings from Pandora will complement data from the James Webb Space Telescope to give astronomers more insight into stars and planets outside our solar system.
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AstroArxiv @astroarxiv.bsky.social · 09/01/2026
Surveying exogenous species in Saturn with ALMA I. Detecting and Mapping CO. Deborah Bardet et. al. arxiv.org/abs/2601.05090
Map of the CO (J=3-2) line area, as observed with ALMA on May 25$^ {th(Top) Example of the CO line fitting at 45$^{Observed CO line fitting at 0$^ $N-24$^ $W (eastern limb) for the  {retrievedContinuum-subtracted CO spectra extracted from the image presented in Fig.  {fig:CO_line_intensity_map
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Eric Agol @ericagol.bsky.social · 09/01/2026
Nice discovery of a Saturn-mass microlens using the different perspectives of Earth and the GAIA telescope @gaiamission.bsky.social, and a nice animation to boot! arxiv.org/src/2601.000... www.science.org/doi/epdf/10....
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James Davenport @jradavenport.com · 07/01/2026
We're trying to bring a really neat astro-themed art installation to UW from Mexico this spring, and we need your help! We can get the art here, but we're fundraising to bring the artists so they can present and collaborate with us here! Help us spread the word? together.uw.edu/i/uw/campaig...
together.uw.edu
Constellations and Supernovas
Support our Astronomy+Arts collaboration in bringing “Constelaciones y Supernovas” to Seattle in Spring 2026!
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Sabina Sagynbayeva @sabinastro.bsky.social · 05/01/2026
I forgot about AAS completely cause been too stressed! So did I miss the only opportunity to give my dissertation talk? 🥲
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ESA Space Science @science.esa.int · 18/12/2025
🐣 Found: newborn stars and planets #ESAGaia & ALMA joined forces to study 31 baby star systems, finding hints of planets 👉 www.esa.int/ESA_Multimed... The collage also shows our own Solar System for reference on the bottom right, as it is predicted to have looked at an age of 1 million years. 🔭 🧪
A collage of 32 glowing discs on a black background. Each disc shows concentric rings in vivid colours: purple, orange, and yellow, with bright cyan centres. The discs vary in size and orientation, creating a striking pattern of circular and elliptical shapes.
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AstroArxiv @astroarxiv.bsky.social · 11/12/2025
Probing stellar rotation in the Pleiades with gravity-mode pulsators. D. J. Fritzewski et. al. arxiv.org/abs/2512.09395
Figure 1Figure 2Figure 3Figure 4
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Stephen Kane @exocytherean.bsky.social · 10/12/2025
The Archean Earth textbook is now available! www.sciencedirect.com/book/edited-... You can directly access the solar system review chapter written by myself and my co-authors here: www.sciencedirect.com/science/chap...
sciencedirect.com
The Archean Earth
The Archean Earth: Tempos and Events, Second Edition is a process-based reference book that focuses on the most important events in early Earth,...
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Thayne Currie 🇺🇦 @astrothayne.bsky.social · 03/12/2025
... and HIP 71618 B the first and (currently) only companion demonstrably suitable for the Roman Coronagraph Technology Demonstration arxiv.org/abs/2512.02126 [El Morsy et al. 2025, ApJ Letters in press]
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Thayne Currie 🇺🇦 @astrothayne.bsky.social · 03/12/2025
(announcement 1 of 2) everyone, say hello to ... HIP 54515 b: the 3rd planet jointly discovered from direct imaging and astrometry arxiv.org/abs/2512.02159 [Currie & Li et al. 2025, AJ in press] Press releases to follow tomorrow
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Annalena Kofler @annalenakofler.bsky.social · 03/12/2025
1/ 🌀 New paper alert! We introduce Dingo-T1, a flexible transformer-based deep learning model for gravitational-wave (GW) data analysis. It adapts to different detector & frequency settings, improving inference efficiency and flexibility 🚀 #AI #MachineLearning #Physics #Astronomy #AcademicSky
Scientific poster with dark background and two black holes illustrated in the center. The paper visualizes gravitational waves, and explains how parameter estimation is performed with DINGO. The standard DINGO model and the DINGO-T1 architectures are illustrated and results are shown. For example, it is possible to reanalyze the same event with different detector configurations with DINGO-T1, illustrated bz a corner plot.
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AstroArxiv @astroarxiv.bsky.social · 01/12/2025
The EBLM Project XVIII. 3D Obliquities of Five Low-Mass Eclipsing Binaries. Becca Spejcher et. al. arxiv.org/abs/2511.23430
Figure 1Figure 2Figure 3Figure 4
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Sabina Sagynbayeva @sabinastro.bsky.social · 24/11/2025
I received a comment to my paper that basically goes: “why did you call the parameters you introduced in your 2025 paper ‘traditional’?” and…yeah…you’re right 🤣
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Ryan White @astroryan.bsky.social · 19/11/2025
Very excited to share the NASA/ESA/STScI press release of our team's work on Apep! It's a terrific writeup, complete with a brand new beautiful visualisation of the nebula geometry. 1/? ⚛️🔭🧪 science.nasa.gov/missions/web...
science.nasa.gov
Webb First to Show 4 Dust Shells 'Spiraling' Apep, Limits Long Orbit - NASA Science
NASA’s James Webb Space Telescope has delivered a first of its kind: a crisp mid-infrared image of a system of four serpentine spirals of dust, one expanding
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Prof. Carl E. Fields 💥 @carlnotsagan.github.io · 10/11/2025
i’m excited to announce that i am hiring (again)! i am looking for a postdoc in computational astrophysics that’s excited about models of stellar transients and multi-messenger astronomy to join my group (star stuff @ steward) at @uarizona.bsky.social! apply here ✨💥: aas.org/jobregister/...
aas.org
Postdoctoral Research Associate I Computational Stellar Astrophysics (Steward Observatory) | American Astronomical Society
The University of Arizona (U of A) Department of Astronomy and Steward Observatory (SO) invites applications for a Postdoctoral Research Associate. The successful candidate will work with Professor Ca...
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Jason Wright @astrowright.bsky.social · 03/11/2025
I wrote a textbook! I hope you like it. store.ioppublishing.org/page/detail/...
Textbook cover for The Search for Extraterrestrial Intelligence: Theory and Practice by Jason T. Wright published by an American Astronomical Society and IOP Publishing Partnership (ebooks)
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Benjamin Pope @benjaminpope.bsky.social · 14/10/2025
Thrilled to have two years' of work out, in a pair of papers led by @gradientrider.bsky.social and @maxecharles.bsky.social. We've built a data-driven calibration of the James Webb Interferometer to near its fundamental limits for high-res imaging - explainer at @aunz.theconversation.com!
theconversation.com
How we sharpened the James Webb telescope’s vision from a million kilometres away
The only Australian hardware on board the legendary telescope is starting to fulfil its duties.
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AstroMonnier @astromonnier.bsky.social · 14/10/2025
Amazing work solving a tricky calibration problem with JWST aperture masking data! Any hope to improve ground-based systematics with this general approach? @benjaminpope.bsky.social arxiv.org/abs/2510.09806
arxiv.org
AMIGO: a Data-Driven Calibration of the JWST Interferometer
The James Webb Space Telescope (JWST) hosts a non-redundant Aperture Masking Interferometer (AMI) in its Near Infrared Imager and Slitless Spectrograph (NIRISS) instrument, providing the only dedicate...
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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 14/10/2025
So excited that our paper is finally out! We analyzed archival TESS observations of RZ Psc and detected 24 transiting exocomets. And, Adalyn is an amazing undergrad applying for grad school this year!
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AstroArxiv @astroarxiv.bsky.social · 09/10/2025
Polka-dotted Stars II: Starspots and obliquities of Kepler-17 and Kepler-63. Sabina Sagynbayeva et. al. arxiv.org/abs/2510.07130
Figure 1Figure 2Figure 3Figure 4
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Sabina Sagynbayeva @sabinastro.bsky.social · 09/10/2025
FYI: arxiv.org/abs/2510.07130
arxiv.org
Polka-dotted Stars II: Starspots and obliquities of Kepler-17 and Kepler-63
Starspots trace stellar magnetic activity and influence both stellar evolution and exoplanet characterization. While occultation-based spot analyses have been applied to individual systems, comparativ...
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Sabina Sagynbayeva @sabinastro.bsky.social · 07/10/2025
I love this little support group that we virtually created with @astroshashank.bsky.social and @benjaminpope.bsky.social 🫶🏻 haha
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Michael Zingale @michaelzingale.bsky.social · 06/10/2025
I like my plot of equipotentials a lot, but I can never shake the fact that @sabinastro.bsky.social calls it the Teenage Mutant Ninja Turtle plot... zingale.github.io/stars/notebo...
a plot of equipotentials in a binary star system, showing the Roche lobes and Lagrange points.  The green color scheme makes it look like a teenage mutant ninja turtle...
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Sabina Sagynbayeva @sabinastro.bsky.social · 03/10/2025
Wuick thread while I am on the train!
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Sabina Sagynbayeva @sabinastro.bsky.social · 03/10/2025
Okay people, welcome my new paper into the world!!! With Isabel Colman and @farrwill.bsky.social arxiv.org/abs/2510.02255
arxiv.org
Rotation Periods for Stars in Open Cluster NGC 6819 From Kepler IRIS Light Curves
We present an updated catalog of stellar rotation periods for the 2.5 Gyr open cluster NGC 6819 using the Kepler IRIS light curves from superstamp data. Our analysis uses Gaussian Process modeling to ...
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arXiv bot (astro-ph) @krxiv-astro-ph.bsky.social · 03/10/2025
Rotation Periods for Stars in Open Cluster NGC 6819 From Kepler IRIS Light Curves arxiv.org/pdf/2510.02255 Sabina Sagynbayeva, Isabel L. Colman, Will M. Farr.
arxiv.org
https://arxiv.org/abs/2510.02255
arXiv abstract link
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Sabina Sagynbayeva @sabinastro.bsky.social · 03/10/2025
Some proposals are so short, and my only hope is that all the exoplaneteers in Physics departments have emailed their colleagues a schematic of transits so now everyone is on the same page lmao
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Shashank Dholakia @astroshashank.bsky.social · 01/10/2025
New paper by me and @benjaminpope.bsky.social! How well can we map a star using optical interferometry? This is just a submitted preprint at the moment--comments and questions welcome! (1/N) arxiv.org/abs/2509.25433
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AAUP @aaup.org · 30/09/2025
BREAKING: WE WON!!! 💥 💥 💥 Federal Judge William G. Young ruled today in our lawsuit against the Trump administration that the policy of arresting, detaining, & deporting noncitizen students & faculty members for their pro-Palestinian advocacy violates the 1st Amendment. Full ruling here:
courtlistener.com
Findings of Fact & Conclusions of Law – #261 in American Association of University Professors v. Rubio (D. Mass., 1:25-cv-10685) – CourtListener.com
Judge William G. Young: ORDER entered. FINDINGS OF FACT AND RULINGS OF LAW, PURSUANT TO FED. R. CIV. P. 52(A)(Sonnenberg, Elizabeth) (Additional attachment(s) added on 9/30/2025: # 1 Main Document) (J...
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Sabina Sagynbayeva @sabinastro.bsky.social · 29/09/2025
Super excited about my new paper coming soon with Isabel Colman and @farrwill.bsky.social !! This project quickly became another statistics bootcamp for me. 😅
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Sabina Sagynbayeva @sabinastro.bsky.social · 24/09/2025
Hooray for amazing collaborators!!!
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👻 Saavik ‘Spooky Season’ Ford 🎃 @saavikford.bsky.social · 22/09/2025
I learned a new word this weekend: Congratudolences! It’s what you say when someone wins a something that is arguably an honor… but will also lead to more work. Like the winner of the pie eating contest & the prize is more pie. Or being elected department chair. Hi! I’m the new CUNY Astro chair!
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Encephalophatass (Any pronouns) @encephalophatass.bsky.social · 21/09/2025
You know about Pavlov's bell. Pavlov grabbed some dogs, rang a bell before feeding them, and eventually the dogs started to salivate when the bell rang, regardless of whether they were given food or not. Now, let's say you studied the brain activity of those dogs. 🧵
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Dr. Jessie Christiansen @aussiastronomer.bsky.social · 17/09/2025
Some tidbits about the most recent 1,000 exoplanets: - Nearly half (~490) were discovered with NASA's TESS mission - As a result, their host stars are nearly *10 times brighter on average* than previous stars! - We have found a lot more cool giant planets (Jupiter analogs), with RV and imaging
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Stephen Kane @exocytherean.bsky.social · 17/09/2025
I have a fun new paper out that demonstrates the power of combining radial velocities (RVs), astrometry, and dynamical simulations in understanding planetary system demographics. You can access the paper here: arxiv.org/abs/2509.12334
arxiv.org
No Giant Planets in the Eta Cassiopeiae System: Dynamical Implications of a Wide Binary Companion
Given the vast number of stars that exist within binary systems, it remains important to explore the effect of binary star environments on the formation and evolution of exoplanetary systems. Nearby b...
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Sabina Sagynbayeva @sabinastro.bsky.social · 14/09/2025
One thing I am proud of in my PhD is creating collaborations with the nicest people. All my research meetings are just full of positive vibes*❤️. (You guys were kind of bad at saying no to me and I’m so glad you were 😂) *sometimes I complain about characters in TV shows but I assume people enjoy it😅
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Charles Margossian @charlesm993.bsky.social · 10/09/2025
My paper with Loucas Pillaud-Vivien and Lawrence Saul, “Variational Inference for Uncertainty Quantification: An Analysis of Trade-offs”, has been accepted for publication in the Journal of Machine Learning Research. 📃 arxiv.org/abs/2403.13748 🧵 1/
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Sabina Sagynbayeva @sabinastro.bsky.social · 05/09/2025
The real statistics I’d like to see is how many times I used “therefore” in this job season. 😅
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Space Telescope Science Institute @stsci.edu · 04/09/2025
STScI's Dr. Néstor Espinoza will explore some of the most exciting findings #NASAWebb is unveiling about the atmospheres of distant exoplanets. 🔭 🧪 DATE: Wednesday, September 17, 7 p.m. ET: youtube.com/live/i466qvWBQ1o?featur…
Promotional graphic for "Deep Space Dialogues" featuring a lecture titled "Alien Skies: Exploring Distant Exoplanet Atmospheres with Webb" by speaker Dr. Néstor Espinoza. The image includes a backdrop of a starry sky with a vibrant depiction of a distant exoplanet.
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Dr./Prof. Meredith MacGregor @mmacgreg.bsky.social · 04/09/2025
Super excited that these results are finally out! This is the highest resolution ALMA image of Fomalhaut ever, and we can learn new things about the structure of the disk and the planet that is likely shaping it. Press release here: public.nrao.edu/news/neighbo...
public.nrao.edu
Neighboring Star’s Warped Ring Shaped by Evolving Planets - National Radio Astronomy Observatory
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have made the highest resolution image to date, revealing new insights...
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Dr. Jessie Christiansen @aussiastronomer.bsky.social · 04/09/2025
Immensely enjoying the headline of this NASA press release from 15 years ago. www.nasa.gov/news-release...
nasa.gov
NASA's Kepler Mission Discovers Two Planets Transiting the Same Star - NASA
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