Indian. Radio Astronomer. VLBI Spectral Line Astrometry. CERC Postdoctoral Fellow at @CSIRO_ATNF @CSIRO . PhD from Uni of Tasmania.
Sydney, Australia
- Tweets 318
- Following 344
- Followers 19
- Likes 3,008
Jayender Kumar retweeted
#BlackHoleWeek2025 🌀
Black hole Sagittarius A* from optical🔭 to radio wavelengths📡#EHT📡 @ehtelescope
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Jayender Kumar retweeted
Recent research led by our astronomer @jayender_singh has changed our understanding of the Milky Way's inner structure. This part of the galaxy is notoriously hard to study, but these new insights are redefining the shape of our home galaxy:
iopscience.iop.org/article/1…
ALT Our proposed model showing X1-orbits range about the Galactic bar (represented by the area enclosed by yellow ellipses tracing the orbits of stars about the Galactic Bar overplotted on a gas surface-density simulation of the Milky Way. The Sun (white circle) is at the top. The colour bar on the right indicates surface density.
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🚀 Turns out, the so-called "Expanding 3 kpc arms" of Milky Way are:
❌ Neither expanding
❌ Nor at 3 kpc
❌ Nor spiral arms
Our new paper reshapes our understanding of the Milky Way’s inner structure—watch as @SimonEllingsen breaks it down! 🌌 linkedin.com/posts/internati…
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Traveling to @naoj Mitaka and Mizusawa VLBI observatories from Kagoshima via Shinkansen. Pretty awesome actually 🗾📡🚄
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Jayender Kumar retweeted
Graduations are always special events🎇 Even more so when you get to celebrate with people you have worked closely with for many years. Congratulations Dr Kumar aka @jayender_singh
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Jayender Kumar retweeted
And the four #Gaganyaan #astronauts are: Gp Capts Prashanth Nair, Ajit Krishnan, Angad Prathap and Wing Co Shubhanshu Shukla. I'd got three of the four names out in today's TOI, correctly indicated by sources outside of @isro. One name (Chauhan) was off. All four are test pilots
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Jayender Kumar retweeted
BREAKING: India announces the 4 Indian astronauts for the #Gaganyaan mission to space. The four chosen IAF pilots are:
Gp Capt Prashanth Nair
Gp Capt Ajit Krishnan
Gp Capt Angad Pratap
Wg Cdr Shubhanshu Shukla
Big congratulations to the 4 and their families!
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Jayender Kumar retweeted
Congratulations @jayender_singh on formal acceptance of your PhD thesis. So you're now officially Dr Kumar! A nice note on which to finish the working year
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RT @isro: Chandrayaan-3 Mission:
Smile, please📸!
Pragyan Rover clicked an image of Vikram Lander this morning.
The image was taken by…
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Jayender Kumar retweeted
Congratulations to @isro for the successful landing of the #Chandrayaan3 mission at the lunar south pole and deploying a lunar rover. It's starting to get really busy on the Moon. Did you know that radio communication to the moon needs antennas of around 20m or bigger?
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Jayender Kumar retweeted
Chandrayaan-3 Mission:
'India🇮🇳,
I reached my destination
and you too!'
: Chandrayaan-3
Chandrayaan-3 has successfully
soft-landed on the moon 🌖!.
Congratulations, India🇮🇳!
#Chandrayaan_3
#Ch3
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Jayender Kumar retweeted
Chandrayaan-3 Mission:
The mission is on schedule.
Systems are undergoing regular checks.
Smooth sailing is continuing.
The Mission Operations Complex (MOX) is buzzed with energy & excitement!
The live telecast of the landing operations at MOX/ISTRAC begins at 17:20 Hrs. IST on August 23, 2023.
Here are the images of the moon captured by the Lander Position Detection Camera (LPDC) from an altitude of about 70 km, on August 19, 2023.
LPDC images assist the Lander Module in determining its position (latitude and longitude) by matching them against an onboard moon reference map.
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Jayender Kumar retweeted
Final PhD presentations are always a proud supervisor moment - excellent work @jayender_singh! They are also bitter-sweet when valued team members move on to the next stage of their careers - all the best @CSIRO_ATNF 📡
Today Jayender Kumar presented his final PhD talk "The Dynamics and 3D Kinematic Structure within the 4 kpc Region of the Milky Way". Jay's impressive results include the first direct measurement of the dynamics of the Milky Way Bar. Jay is now a CERC Postdoctoral Fellow at CSIRO
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Jayender Kumar retweeted
Very nice talks today from @jayender_singh on direct measurements of the Milky Way bar and Lucas on new southern parallax results. Friday morning, first talk after the conference dinner is when I get my turn 🤔
Another busy week! On Monday Guifré attended the @AusSpaceAgency industry event with senior NASA officials. While @Jayender_singh, Lucas Hyland and @SimonEllingsen are at #IAUS380 in Japan presenting the ultra-precise astrometry results from the @UTas_ @AuScopeVLBI array.
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Jayender Kumar retweeted
Another busy week! On Monday Guifré attended the @AusSpaceAgency industry event with senior NASA officials. While @Jayender_singh, Lucas Hyland and @SimonEllingsen are at #IAUS380 in Japan presenting the ultra-precise astrometry results from the @UTas_ @AuScopeVLBI array.
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Jayender Kumar retweeted
Radio astronomers have used Very Long Baseline Interferometry and parallax. Parallax is a way to calculate distance by looking at an object from two different positions. (2/🧵)
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Jayender Kumar retweeted
Radio #ImageoftheWeek 📡 The Pleiades is an open cluster of stars about 435 light years away. We can't travel there, so how do we know its distance? (1/🧵)
📸 Credit: Alexandra Angelich (NRAO/AUI/NSF)
@DiscoverAUI | @NSF
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