Dr./Prof. Meredith MacGregor
@mmacgreg.bsky.social
Assistant Professor at Johns Hopkins in the Department of Physics and Astronomy | astronomer, educator, runner, mom | Pronouns: she/her
Never hurts to reach out! It helps you figure out whether you actually want to work with that person. And, it can help you make a better justification for the host institution.
October 14, 2025 at 1:17 PM
Never hurts to reach out! It helps you figure out whether you actually want to work with that person. And, it can help you make a better justification for the host institution.
Ugh that all sounds terrible! (The fact that I started my new biologic injections the same week is definitely not helping... So far, Mom is the hardest hit. Dad is fine. Dogs are fine. Little one had the sniffles and bounced back within a few days.)
September 17, 2025 at 4:20 PM
Ugh that all sounds terrible! (The fact that I started my new biologic injections the same week is definitely not helping... So far, Mom is the hardest hit. Dad is fine. Dogs are fine. Little one had the sniffles and bounced back within a few days.)
Our little one started daycare last week, and I have been sick ever since... My immune system is clearly no match to school germs!
September 17, 2025 at 4:08 PM
Our little one started daycare last week, and I have been sick ever since... My immune system is clearly no match to school germs!
Paper #2 led by Center for Astrophysics postdoctoral fellow Joshua Lovell: arxiv.org/abs/2509.02884
ALMA Reveals an Eccentricity Gradient in the Fomalhaut Debris Disk
We present evidence of a negative eccentricity gradient in the debris disk of the nearby A-type main sequence star, Fomalhaut. Fitting to the high-resolution, archival ALMA 1.32 mm continuum data for ...
arxiv.org
September 4, 2025 at 5:21 PM
Paper #2 led by Center for Astrophysics postdoctoral fellow Joshua Lovell: arxiv.org/abs/2509.02884
Paper #1 led by @jhuartssciences.bsky.social graduate student Jay Chittidi here: arxiv.org/abs/2509.02825
High Resolution ALMA Data of the Fomalhaut Debris Disk Confirms Apsidal Width Variation
We present long-baseline observations of the Fomalhaut outer debris disk at 223 GHz (1.3 mm) from ALMA Cycle 5, which we use along with archival short-baseline observations to produce a 0".57 resoluti...
arxiv.org
September 4, 2025 at 5:21 PM
Paper #1 led by @jhuartssciences.bsky.social graduate student Jay Chittidi here: arxiv.org/abs/2509.02825
Ugh that's annoying! (Typed as I wait for my insurance company to decide if they want to approve the new biologic my doctor prescribed for me...)
August 4, 2025 at 10:04 PM
Ugh that's annoying! (Typed as I wait for my insurance company to decide if they want to approve the new biologic my doctor prescribed for me...)
That’s such an encouraging story! The last flight I was on I felt like I was the only one on the flight wearing mask… (annoying since I’m also riding the autoimmune medication bus) Also, looking forward to seeing you this week!
July 28, 2025 at 12:17 AM
That’s such an encouraging story! The last flight I was on I felt like I was the only one on the flight wearing mask… (annoying since I’m also riding the autoimmune medication bus) Also, looking forward to seeing you this week!
Dogs are the most wonderful creatures and I'm so sorry you have to say goodbye to such a very good boy ❤️
June 17, 2025 at 1:32 PM
Dogs are the most wonderful creatures and I'm so sorry you have to say goodbye to such a very good boy ❤️
I don’t think that all of the ones selected in the last call have actually received full funding yet. POEMM has its CSR this fall.
June 1, 2025 at 2:56 PM
I don’t think that all of the ones selected in the last call have actually received full funding yet. POEMM has its CSR this fall.
I'm so sorry Jessie...
May 30, 2025 at 9:08 PM
I'm so sorry Jessie...
So far I've parsed that it eliminates AAPF and ASCEND. ALMA will still be support by Green Bank Observatory will start close out. Cuts to a bunch of other facilities as well.
May 30, 2025 at 9:07 PM
So far I've parsed that it eliminates AAPF and ASCEND. ALMA will still be support by Green Bank Observatory will start close out. Cuts to a bunch of other facilities as well.