Ori Fox
Astronomer | @STScI Scientist | HST | JWST | And now Deputy Project Scientist for Roman Space Telescope
- Reposted by Ori Fox🚨 Community Forum Reminder🚨 Join Roman Community Forum #22 for an overview of the Roman Research Nexus—connecting the community to tools, data & collaboration! ⭐ Jan 21, 2026 • 4–5 PM ET 🔗 bit.ly/49GUtXW
- I'm excited to announce my newest paper out on arxiv: Expanding the High-z Supernova Frontier with JWST 🚀 We just used JWST to push transient astronomy to z ~ 5, discovering 68 supernovae...all without a dedicated time-domain survey. Here’s what we found 👇🧵 1/n
- High-z transients are notoriously hard: rest-frame optical shifts to IR and ground-based surveys hit sensitivity limits. JWST changes the game, but time-domain surveys are expensive and few have been TAC approved with the necessary sensitivity/wavelength coverage/cadence. 2/n
- So we asked: what can we already do with existing JWST data? The trick: difference imaging between two massive JWST surveys ➡️ COSMOS-Web + PRIMER ➡️ ~1 year separation ➡️ 133 arcmin² overlap Neither was designed for transients—but together, they are 👀💀 3/n
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View full threadThis pathfinder shows what’s possible right now with archival JWST data. The early Universe is exploding—we’re finally watching. 💥 Paper link ⬇️ ui.adsabs.harvard.edu/abs/2026arXi... #JWST #NASARoman #Supernova #COSMOS n/n
- It's been an exciting 2025. I haven't done a great job promoting my work on social media, so over the next couple weeks, I'll make an attempt to summarize three of my biggest papers. Stay tuned...we'll see if I actually get this done.
- Roman Time Domain Session at 10am! #AAS247
- Happy Thursday #AAS247! Today we have two Roman sessions: 9am - Roman iPosters, Exhibit Hall 10am - Preparing for Time Domain Science with Roman 226C
- As I have the past 3 years, I am organizing the a “Foodie Dinner” on Wednesday night, January 7th at 7pm. Location will be sent to those who sign up. At the current time, I have 3 spots left. PM if interested. #AAS247
- Check them out #AAS247
- 🚨Get Ready for #AAS247!🚨 Follow us daily for your dose of #NASARoman at AAS: talks, posters, booths, sessions (and stickers) —we’ve got it all. 🔭📡📸 Full schedule: outerspace.stsci.edu/spaces/RAA2/...
- Reposted by Ori Fox🚀The Roman Cycle 1 Call for Proposals is OPEN! Unlock new discoveries with the Wide Field Instrument—your science starts here! Apply for funding to analyze Roman data, perform theory/lab research, and propose new observations. 🔭☄️ 📅 Deadline: Mar 17, 2026 (5 PM PDT) 📝 bit.ly/4q3jbbL
- Got a look at @nasaromantelescope.bsky.social this morning. And it was looking right back.
- 🔭☄️
- The countdown is ON. ⏳ We’re one year from launch — and kicking off the Ready, Set, Roman! Training Series! First up: Tools for Exploring Roman’s Core Community Surveys Nov 4 (Tomorrow!) • 1 PM EST Get hands-on with the data that will shape a decade of discovery. bit.ly/4oP3c06
- Reposted by Ori Fox🚀The Roman Coronagraph Community Participation Program (CPP) is meeting this week at IPAC in Pasadena, CA! The team is gearing up for commissioning, observations with the Coronagraph, and preparing for the launch of Roman next year. Exciting times ahead! ✨🪐 www.romancoronagraph.space
- I don't post a lot, but I am particularly proud of this paper. It's the first observational sample of binary companions to stripped envelope supernovae. And places constraints on the binary evolution physics. It only took me 10 years to build with HST! arxiv.org/abs/2508.12677
- In these turbulent times for science, I can't resist putting out my "Case For Space". It's sometimes a little scary to speak up, but here I go. I hope this doesn't go viral. 😉
- Reposted by Ori Fox🚨Get Ready for #AAS246!🚨 Follow us daily for your dose of #NASARoman at AAS: talks, posters, booths, sessions (and stickers) —we’ve got it all. 🔭📡📸
- Reposted by Ori Fox🚀Want to get involved with #NASARoman before it launches? You can tune-in, interact, or actively contribute. It's a great way to gear up for the Cycle 1 Call for Proposals coming in late 2025! 👩🚀🛰️ Find out more: bit.ly/4kigJM9 #ExpandOurView
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- Reposted by Ori FoxJoin us for "Cosmic Cartography with Roman", a symposium on how our large survey maps will be used to explore the intersection of dark energy and dark matter, including galaxy formation/evolution. @stsci.edu - July 14-18! Speaker schedule now available. Register by June 9. #CCR25 bit.ly/4jYe3TH
- Representing @nancyromansci.bsky.social at the Congressional @planetarysociety.bsky.social Caucus event with Bill Nye and @stsci.edu! www.planetary.org/advocacy/the...
- If you're looking to get involved in #NASARoman, *now is the time.* Cycle 1 Call for Proposals will be in Fall 2025. This workshop at #AAS246 is one of the best opportunities to get involved and early access to the cloud infrastructure. #LongLiveRoman
- Going to #AAS246? Start prepping for #NASARoman Cycle 1 Proposals. Register for our workshop on the Roman Research Nexus, the cloud-based science platform for working with and analyzing Roman's large data sets. Sun, Jun 8 from 9-5. You can add a workshop any time before May 29.
- Reposted by Ori FoxNext #NASARoman Virtual Lecture on May 15! "Chromatic Effects on the PSF and Shear Measurement for the Roman Space Telescope" - Federico Berlfein (Carnegie Mellon) For more information, visit roman.ipac.caltech.edu/Lectures.html #ExpandOurView
- Reposted by Ori Fox🚀We are ready for launch...of the official social media account for doing science with #NASARoman! This account will keep researchers informed about opportunities for preparing for and participating in Roman science. Follow us to stay involved. #ExpandOurView
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- Reposted by Ori FoxJust 3/4 of it! I’m hoping the other fourth will include an ultra-deep field 🤩
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- The 5 year mission plan for @nasaromantelescope.bsky.social summarized in an easy to read press release with some snazzy graphics. Which part are you most excited about? #NASARoman #LongLiveRoman www.nasa.gov/missions/rom...
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- Very proud to see @NASARoman ROTAC report on initial 5-year mission plan come out today...and have my name on it! This is the FUTURE of astronomy. #Roman #LongLiveRoman t.co/Co9qgBrKr6
- In case you missed it…. Special Announcement: Recommendations for the Roman Core Community Surveys to be Announced Thursday, April 24 at 12pm EDT. Details below. outerspace.stsci.edu/pages/viewpa...
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- Here’s how I know AI still has a ways to go. The automated voice conversation on United Airlines couldn’t make it past the first question where my answer was “No.”
- Abstract Deadline Reminder: "Cosmic Cartography with Roman" will be this year's official @NASARoman summer conference, focusing on the advances in Galaxy Structures, Distributions, Dark Matter, and Dark Energy. Abstracts due next Friday, March 28. www.stsci.edu/contents/eve....
- Reposted by Ori FoxRegistration is now open for the next JWebbinar – NIRCam and MIRI Coronagraphy: An Update 3 Years into #JWST Operations – to be held on April 3rd. Get the details: ow.ly/ewNq50VgoQW
- Reposted by Ori FoxOMG. Last night's lunar eclipse -- as seen from the Moon! The Blue Ghost lander got this shot. The Sun is overexposed, but in the reflection you can see it's almost fully eclipsed by the Earth. 🧪🔭 fireflyspace.com/news/blue-gh...
- Transients From Space 2025 group photo! #TFS25
- Incredible night for #TFS25 where Karrie Gilbert gives a @astroontapdc.bsky.social at Guilford Hall Brewery.
- Yvette Cendes: Ignore radio at your own peril. #TFS25
- Masterson: Incredible Mid-IR spectra of TDEs with JWST! The WISE-selected TDEs sit up with the AGN host-galaxy line strengths. #TFS25
- Megan Masterson: TDEs prefer post-starburst host galaxies. #TFS25
- Christos Panagiotou: Deep IR surveys from WISE discovered the closest TDE ever! #TFS25
- Yuhan Yao: Highly Variable X-Ray emission detected with Swift tells us this can't be a SN, but must be an offset TDE from a wandering black hole. #TFS25
- Anya Nugent: Host galaxies are key to distinguishing transient types and identifying their progenitors. #TFS25
- Fed Bianco: AI is used in every stage of survey science! #TFS25
- Kishalay De: IR Surveys stand to make a big impact in all astrophysics (BOOM!). #TFS25
- Haojing Yan: PEARLS is finding great transients, too. North Ecliptic Pole the best place because of the CVZ. #TFS25
- Wenlei Chen: Lensing measurements of SNe Ia can potentially put some important constraints on the Hubble tension, although the small sample and large error bars are not too constraining...yet. #TFS25
- Justin Pierel: High-z SNe Ia are WEIRD! Look at that red color of SN2023adsy at z=2.90! #TFS25
- Christa DeCoursey: Supernovae Supernovae everywhere you point with JWST. 1-2 SNe per square arcmin down to 30th mag. #TFS25
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- After party at Union Craft Brewing #TFS25
- Former postdoc advisor A Filippenko. #TFS25
- Kirsty Taggart: Incredible HST pre-explosion imaging of the Type Ibn SN 2023fyq. #TFS25
- Arka Sarangi: Dust condensation is when more molecules attach instead of disassociate. But the conditions of the CSM and the explosion make all the difference! #TFS25
- Melissa Shahbandeh: Supernovae may be able to be the source of dust in the high-z universe. #TFS25
