Tessera

Physgal ⚛️@physgal.bsky.social · last yr.

The abstract submission deadline for the Women+ in Physics Canada conference is quickly approaching (April 22nd). Early career gender minorities are invited to share their research and network with other early career physicists at WiPC+ 2025. 🇨🇦 👩‍🔬 ⚛️ 🎢 🧪

This was super fun to work on! In particular, I deep-dived into the expansion of the arXiverse, which was a very meta exploration of the past few decades of astronomers “yeeting papers into the void”

From Astrobites: There is a tradition in Astronomy to post silly science papers to the arXiv on Aprils Fools day. We’ve collected them all for 2025 and provided some “peer review”. 🔭✨☄️ astrobites.org/2025/04/03/a...

My last official bite as a regular author 🥹 so grateful to have written for astrobites over the past few years & excited to see what the new generation of authors brings! 🧪 Another case of using gamma-rays to track down cosmic rays, but this time from starburst galaxy M 82, aka the cigar galaxy 🚬🌟

Ava Polzin @avapolzin.bsky.social · last yr.

From Samantha Wong @samanthawong.bsky.social : The latest results from the VERITAS gamma-ray telescopes hint that starburst galaxies like M 82 might help us understand where mysterious cosmic rays come from! 🔭✨ astrobites.org/2025/02/13/m...

Registration ends Feb. 15! 🔭🧪👩‍🔬 We encourage *all* professional astronomers/astrophysicists to attend (in person or remotely)! More at pictureanastronomer.github.io/symposium

Flyer advertising our Picture an Astronomer symposium, March 4 -6 in Chicago, IL and online.

Alexey Petrov @alexeypetrov.bsky.social · last yr.

From Huei Sears @starlights.bsky.social and Jessie Thwaites @jthwaites.bsky.social: Today we highlight the “Picture an Astronomer” Symposium at UChicago, created primarily by grad student Ava Polzin, with lectures and events in February/March! Registration ends 2/15.✨🔭 astrobites.org/2025/02/11/t...

Neutrino of the energy of 120 PeV (Petaelectron-volt)! That’s a lot. Got a theory for that? 🧪 www.nature.com/articles/s41...

Observation of an ultra-high-energy cosmic neutrino with KM3NeT - Nature

A very high-energy muon observed by the KM3NeT experiment in the Mediterranean Sea is evidence for the interaction of an exceptionally high-energy neutrino of cosmic origin.  

nature.com

arXiv bot (astro-ph)@krxiv-astro-ph.bsky.social · last yr.

This paper has been in the works since very early in my MSc (I’m now a second year PhD) — after like 18 months of reviews by a lot of large collaborations, we finally got this out into the world!! Summary below but tl;dr: do gammas and neitrinos come from the same place? Not this time! 🧪🔭

VERITAS and multiwavelength observations of the Blazar B3 2247+381 in response to an IceCube neutrino alert https://arxiv.org/pdf/2502.03853 Atreya Acharyya et al

Another astrobite in my series of “where are we making all these cosmic rays??” themed bites. This is a theory paper that looks at modelling a scenario where all the cosmic rays at really high energies are made in our nearest AGN, Centaurus A 🔭🧪

From Samantha Wong: Today’s authors try to answer a century-old mystery: where are all the cosmic rays coming from?? ✨🔭 astrobites.org/2025/02/06/c...

Eric Holthaus @ericholthaus.com · 2y ago

Just got a story approved to run on Monday on the crisis happening at the NSF. If you are an NSF-funded scientist and have been personally impacted by the funding pause this week, I'd love to hear from you. Reach me securely on Signal: 3162958947

Kevin Bird@stairwaytokevin.bsky.social · 2y ago

I'm begging a major news org to cover the fact NSF is defying the courts to enact Trump's unconstitutional executive order

Astronauts are currently on an EVA to repair NICER! 🔭✨ #AAS245 plus.nasa.gov/scheduled-vi...

U.S. Spacewalk 91 - NASA+

Coverage of International Space Station U.S. Spacewalk 91 (spacewalk is scheduled to begin at appx. 8 a.m. EST).

plus.nasa.gov

The Whimsical Muse@whimsicalmuse.bsky.social · 2y ago

+ highland cows ofc!!

All I want is a cottage in the Scottish Highlands, a freshly-fallen snow, a crackling fire, a riveting mystery novel, a kettle on the stove, and a healthy supply of emotional support scones.

happy new years i made my cat a hat and she hates it

Cat begrudgingly wearing a crocheted hat

arXiv bot (astro-ph)@krxiv-astro-ph.bsky.social · 2y ago

can light travel faster than the speed of light? probably not but we can use all the times we saw light travelling at regular speed to constrain that new physics probably isn’t happening

Discriminating between different modified dispersion relations from gamma-ray observations https://arxiv.org/pdf/2412.16048 S. Caroff, C. Pfeifer, J. Bolmont, T. Terzić, A. Campoy-Ordaz, D. Kerszberg, M. Martinez, U. Pensec, C. Plard, J. Strišković, S. Wong

Jennifer Crawford@ournewhomecoach.bsky.social · 2y ago

yes I am a “100 tab across multiple browser” person but I don’t think I’ve ever closed a phone tab and now I’m scared

Just closed about 100 tabs on my phone. Winning at life.

Anna Hughes @annaghughes.bsky.social · 2y ago

Think twice before gifting someone an M dwarf this holiday season

An M dwarf star with the text: "I am not a toy. I am not a Christmas present. I am a 10 trillion year commitment"

Rosemary Mosco @rosemarymosco.com · 2y ago

i reallllly want a work/life balance so badly but like how do I do that if I have a conference the first week of january??!! my unfinished slides and buggy code are actively haunting me

Another thing I made this year. Pigeon history!

A comic called "What City Pigeons Talk About". Two city pigeons are standing on the sidewalk. One says "Hey, do you ever think about the past?" The other says "The past?"

A closeup of the first pigeon. They say "Yeah - do you ever think about where we came from? Sometimes I forget that city pigeons are domestic animals."

A hand reaches out to three wild pigeons. The narrator pigeon says "Humans domesticated us many millennia ago in the Middle East. We provided meat, feces used for fertilizer, and much more." There are two very fancy pigeon breeds. "Over time, people split us into hundreds of pure breeds - some quite elaborate! Kings and queens proudly kept pigeons, and colonists spread us worldwide."

A closeup again of the first pigeon, who says, "But we fell out of fashion. Now we peck at the dusty concrete, our past glory all but forgotten. Do you ever think about that?"

pls appreciate that I put a hat on the observatory (and pray for me that it is somehow not cloudy for my event :))

addressing some anti-DEI bs - here’s just some of the DEI work I’m fortunate to do: - making teaching resources that include underrep. physicists - establishing a food pantry for grad students w/ financial stress - bringing telescopes and physics labs to remote and underserved communities

Hi everyone! I’m Sam and I’m a PhD student at McGill university in Montreal, Canada! I study pulsars and their environments in very high energy gamma-rays. I’m a current @astrobites.bsky.social author and I’m also involved in DEI efforts and run a small outreach observatory 🔭

observing day 10/10(!) terrible weather, sat in the control room all night to follow up a gravitational wave through the clouds ☁️

Our sky cameras - you *should* be able to see like ~100 stars here

The single gamma we saw after 15 minutes of observations (gamma-ray fluxes are low but like not this low)

observing day 9/10: my American colleagues keep thanking me so much for being here to operate the telescopes on thanksgiving (I’m Canadian and literally had no idea today wasn’t just a normal day)

Observing day 5?/10 (losing track tbh) and finally spotted a coati (a desert raccoon)!!

Coati at the edge of the road in front of Mt. Wrightson in Arizona

Observing day 3/10! Venus sighting while looking for ringtails 🦝 before observations

VERITAS gamma-ray telescope at sunset with Venus

Just started day 1/10 of a yearly observing shift! gamma-ray observatories are different than others, so wanted to share a day in the life! Winter shifts are pretty brutal —we’re working 15h sunset to sunrise and drive back up the mountain to get to the dorms (the telescopes are at the bottom).

Me in the control room! Ultra wide monitors are too wide to fit in the picture!

One of the VERITAS telescopes pictured with electronics trailers

Coati sighting on the mountain road drive back to the dorms

Love astronomy, astrophysics, and science communication? Come join the Astrobites team! Applications due November 27th. ✨🔭 astrobites.org/2024/10/27/a...

Apply to Write for Astrobites 2024!

Love astronomy, astrophysics, and science communication? Come join the Astrobites team! Applications due November 27th.

astrobites.org

Interested in following our wonderful Astrobites authors? Check out the starter pack! 🔭 go.bsky.app/5Ab7NLu

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