Astrophysicist @OSUAstro. @LawrenceUni and @uarizona alumnus. Working on supernovae, galaxies, black holes & neutron stars, nucleosynthesis.
Ohio
Joined February 2009
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Todd Thompson retweeted
Todd Thompson, a professor in @OSUAstro, has been appointed chair of the department. Thompson is a theoretical astrophysicist whose research focuses on the evolution and impacts of massive stars and what happens at the end of their lives. artsandsciences.osu.edu/news…
Todd Thompson retweeted
i’m excited to announce that i am hiring!
i am looking for a postdoc in computational astrophysics that’s excited about massive stars, stellar transients, and multi-messenger astronomy to join my group at @StewardAstro.
Todd Thompson retweeted
It is very cool to see some of our earlier discoveries still being studied almost 10 years later!
"Eight Years of Light from ASASSN-15oi: Towards Understanding the Late-time Evolution of TDEs"
arxiv.org/abs/2407.19019
#VariableUniverse
Todd Thompson retweeted
Io, satellite of Jupiter, seen in visible band with an adaptive optics system on the Large Binocular Telescope located in Arizona. We can now say than AO on ground-based telescope is now better than space telescopes even in optical. buff.ly/3KlRzvE
Todd Thompson retweeted
According to information obtained Friday, university spokesperson Ben Johnson said once the troopers began using force on the students around 10 p.m., the state troopers on the roof switched to long-range firearms as part of their protocol.
Read more:
thelantern.com/2024/04/unive…
Todd Thompson retweeted
#GaiaBH3 is the new record holder in our Milky Way with its 33 solar masses. Most black holes with stellar origin have a mass of about 10 solar masses. The mass of this new Gaia #BlackHole is pinned down with unparalleled accuracy, putting it firmly in the 30 solar mass range!
Todd Thompson retweeted
While verifying preliminary #GaiaDR4 data, this source popped out! #GaiaDPAC initially thought the solution to be spurious & started to check the data! What a surprise to see this detection of #GaiaBH3! A finding worth publishing in advance of #GaiaDR4. cosmos.esa.int/web/gaia/iow_…
Todd Thompson retweeted
Gaia spots Milky Way's most massive black hole of stellar origin! It's 33 solar masses, dormant, 2nd closest to Earth at ~2000 light years away, part of a wide binary with an old giant star, with estimated age of 11 Gyr: youtu.be/cU00B-6DeSQ #GaiaBH3 cosmos.esa.int/web/gaia/iow_…
Todd Thompson retweeted
Something happened to my solar energy production today, I need to investigate.
Todd Thompson retweeted
Breaking news!🎉 Today we announce the most precise measurements of our expanding Universe using the BAO signal in 6.1 Million galaxies and quasars from Year 1, tracing dark energy through cosmic time. See @BerkeleyLab PR at newscenter.lbl.gov/2024/04/0… 1/10
📸 Credit: @ClaireLamman
ALT DESI has made the largest 3D map of our universe to date. Earth is at the center of this thin slice of the full map. In the magnified section, it shows the underlying structure of galaxies in our universe. Credit: Claire Lamman/DESI collaboration; custom colormap package by cmastro
Todd Thompson retweeted
Interested in #threebodyproblem?
Here is a cool plot from a paper by @chargedcurrent:
"Accelerating Compact Object Mergers in Triple Systems with the Kozai Resonance: A Mechanism for "Prompt" Type Ia Supernovae, Gamma-Ray Bursts, and Other Exotica"
ui.adsabs.harvard.edu/abs/20…
Todd Thompson retweeted
Our new paper is on arXiv today. Hydrodynamic shielding can operate in supersonic regimes and aid cloud survival in radiative galactic winds when the cooling length is much shorter than the cloud radius. Work led by my student @Iandrew81 at @fisicaynanoYT arxiv.org/abs/2402.08745
Todd Thompson retweeted
@PlotAstro can I nominate a plot from 5 years ago? Figure 1 of science.org/doi/10.1126/scie… by @JAJohnson51 shows the nucleosynthetic origins of each chemical element.
Agree. And it's not that astronomy is useless in any literal sense. The conversation was more about the intrinsic worth of astronomy and the other arts :) (in the sense you mean it here).
Astronomy was not be claimed to be *completely* useless, but only useless in the same sense people say "Well, you're not curing cancer" or "I won't ever use algebra." The conversation was more about the intrinsic *worth* of astronomy itself, in the same sense as art or poetry or
Hills then gives e ~ 0.11 or so (dM/Mtot0 ~ 0.3/3.0; e0=0), close to observed (your Fig 9, top). So, this would require ~0.0(0?) Msun of actual mass loss if Vkick =0. Otherwise, requires "kick cancellation," as you discuss.
Interesting! Note that for a NS of M = 1.9 Msun, we expect ~0.3 Msun in nearly-instantaneous irreducible mass loss in the form of neutrinos: e.g., eq. 35: ui.adsabs.harvard.edu/abs/20…
So M_He = 2.2Msun is the minimum possible value.