#microlensing — Public Fediverse posts

Where Are All the Intermediate Mass Black Holes? Microlensing Fast Radio Bursts Might Reveal Them
https://atlas.whatip.xyz/post.php?slug=where-are-all-the-intermediate-mass-black-holes-microlensing-fast-radio-bursts-might-reveal-them
Quick take: <p>In the heirarchy of black holes
#intermediate #microlensing #bursts #black

Where Are All the Intermediate Mass Black Holes? Microlensing Fast Radio Bursts Might Reveal Them
https://atlas.whatip.xyz/post.php?slug=where-are-all-the-intermediate-mass-black-holes-microlensing-fast-radio-bursts-might-reveal-them
Quick take: <p>In the heirarchy of black holes
#intermediate #microlensing #bursts #black

Sterrenkundigen meten voor het eerst de massa van een dwaalplaneet
Uit onderzoek naar gravitationele microlensing is gebleken dat er een populatie van vrijzwevende planeten bestaat.
#dwaalplaneet #exoplaneet #gaia #microlensing #VrijzwevendePlaneet #ZwaartekrachtLensing
https://www.kuuke.nl/sterrenkundigen-meten-voor-het-eerst-de-massa-van-een-dwaalplaneet/

#Gravitational #microlensing has emerged as a transformative tool. It is an observational phenomenon predicted by General Relativity, wherein the gravitational field of a foreground object (the lens) bends and magnifies the light of a distant background star (the source).
#WhatIs #Astrophysics #Astronomy #sflorg
https://www.sflorg.com/2025/12/wi12142501.html

#Gravitational #microlensing has emerged as a transformative tool. It is an observational phenomenon predicted by General Relativity, wherein the gravitational field of a foreground object (the lens) bends and magnifies the light of a distant background star (the source).
#WhatIs #Astrophysics #Astronomy #sflorg
https://www.sflorg.com/2025/12/wi12142501.html

#Gravitational #microlensing has emerged as a transformative tool. It is an observational phenomenon predicted by General Relativity, wherein the gravitational field of a foreground object (the lens) bends and magnifies the light of a distant background star (the source).
#WhatIs #Astrophysics #Astronomy #sflorg
https://www.sflorg.com/2025/12/wi12142501.html

#Gravitational #microlensing has emerged as a transformative tool. It is an observational phenomenon predicted by General Relativity, wherein the gravitational field of a foreground object (the lens) bends and magnifies the light of a distant background star (the source).
#WhatIs #Astrophysics #Astronomy #sflorg
https://www.sflorg.com/2025/12/wi12142501.html

#Gravitational #microlensing has emerged as a transformative tool. It is an observational phenomenon predicted by General Relativity, wherein the gravitational field of a foreground object (the lens) bends and magnifies the light of a distant background star (the source).
#WhatIs #Astrophysics #Astronomy #sflorg
https://www.sflorg.com/2025/12/wi12142501.html

(25 Apr) New study: There are lots of icy super-Earths

&ldquo;Microlensing&rdquo; lets us find planets at much greater distances from their star.

https://s.faithcollapsing.com/i6bg6
Archive: ia: https://s.faithcollapsing.com/0ytdi

#astronomy #exoplanets #microlensing #science

25-Apr-2025
Astronomers find Earth-like #exoplanets common across the cosmos
New study debunks a single planet-formation scenario
Using the Korea #Microlensing Telescope Network (KMTNet), an international team of researchers has discovered that super-Earth exoplanets are more common across the universe than previously thought.
https://www.eurekalert.org/news-releases/1081723 #science #astrobiology

Exoplaneet ter grootte van de Aarde ontdekt in een baan om een ​​verre witte dwerg

Astronomen die de Keck II 10-meter telescoop gebruiken hebben bewijs gevonden voor een planeet met de massa van de aarde en een bruine dwerg die om een witte dwerg draaien.

https://www.kuuke.nl/exoplaneet-ter-grootte-van-de-aarde-ontdekt-in-een-baan-om-een-verre-witte-dwerg/

#BruineDwerg #exoplaneet #keck #microlensing #WitteDwerg

#Romanspacetelescope #microlensing survey will monitor 100 million #Stars over hundreds of days, likely detecting around 2,500 #exoplanets
https://indianf.com/nasa-nancy-grace-roman-space-telescope/#:~:text=Roman%E2%80%99s%20microlensing%20survey%20will%20monitor%20100%20million%20stars%20over%20hundreds%20of%20days%2C%20likely%20detecting%20around%202%2C500%20exoplanets

#Romanspacetelescope #microlensing survey will monitor 100 million #Stars over hundreds of days, likely detecting around 2,500 #exoplanets
https://indianf.com/nasa-nancy-grace-roman-space-telescope/#:~:text=Roman%E2%80%99s%20microlensing%20survey%20will%20monitor%20100%20million%20stars%20over%20hundreds%20of%20days%2C%20likely%20detecting%20around%202%2C500%20exoplanets

#Romanspacetelescope #microlensing survey will monitor 100 million #Stars over hundreds of days, likely detecting around 2,500 #exoplanets
https://indianf.com/nasa-nancy-grace-roman-space-telescope/#:~:text=Roman%E2%80%99s%20microlensing%20survey%20will%20monitor%20100%20million%20stars%20over%20hundreds%20of%20days%2C%20likely%20detecting%20around%202%2C500%20exoplanets

#Romanspacetelescope #microlensing survey will monitor 100 million #Stars over hundreds of days, likely detecting around 2,500 #exoplanets
https://indianf.com/nasa-nancy-grace-roman-space-telescope/#:~:text=Roman%E2%80%99s%20microlensing%20survey%20will%20monitor%20100%20million%20stars%20over%20hundreds%20of%20days%2C%20likely%20detecting%20around%202%2C500%20exoplanets

#Romanspacetelescope #microlensing survey will monitor 100 million #Stars over hundreds of days, likely detecting around 2,500 #exoplanets
https://indianf.com/nasa-nancy-grace-roman-space-telescope/#:~:text=Roman%E2%80%99s%20microlensing%20survey%20will%20monitor%20100%20million%20stars%20over%20hundreds%20of%20days%2C%20likely%20detecting%20around%202%2C500%20exoplanets

Detecting these microlensing events (planets passing in front of stars) is challenging.

"Over the previous decade, three independent sky-monitoring projects had found evidence of massive, Jupiter-like planets drifting alone through space. [..] Put these discoveries together, and you get not just a few oddities, but an entire, previously unknown class of celestial objects."

https://spectrum.ieee.org/rogue-planet

#Astronomy #Telescopes #ExoPlanets #Microlensing #Space

Predicting #astrometric #microlensing events from #Gaia Data Release 3: https://academic.oup.com/mnras/article/527/1/1177/7379784?login=false -> Gaia is so Accurate it Can Predict Microlensing Events: https://www.universetoday.com/164088/gaia-is-so-accurate-it-can-predict-microlensing-events/

Predicting #astrometric #microlensing events from #Gaia Data Release 3: https://academic.oup.com/mnras/article/527/1/1177/7379784?login=false -> Gaia is so Accurate it Can Predict Microlensing Events: https://www.universetoday.com/164088/gaia-is-so-accurate-it-can-predict-microlensing-events/

Predicting #astrometric #microlensing events from #Gaia Data Release 3: https://academic.oup.com/mnras/article/527/1/1177/7379784?login=false -> Gaia is so Accurate it Can Predict Microlensing Events: https://www.universetoday.com/164088/gaia-is-so-accurate-it-can-predict-microlensing-events/

Predicting #astrometric #microlensing events from #Gaia Data Release 3: https://academic.oup.com/mnras/article/527/1/1177/7379784?login=false -> Gaia is so Accurate it Can Predict Microlensing Events: https://www.universetoday.com/164088/gaia-is-so-accurate-it-can-predict-microlensing-events/

Predicting #astrometric #microlensing events from #Gaia Data Release 3: https://academic.oup.com/mnras/article/527/1/1177/7379784?login=false -> Gaia is so Accurate it Can Predict Microlensing Events: https://www.universetoday.com/164088/gaia-is-so-accurate-it-can-predict-microlensing-events/

Nature Journal astronomy covers: 1993

The footprint of dark matter?

Feature articles on gravitational microlensing by dark objects by two collaborations: MACHO and EROS + News & Views paper "In search of the halo grail" by Craig J. Hogan

https://nature.com/nature/volumes/365/issues/6447

#darkmatter #machos #macho #eros #galaxy #milkyway #galaxies #lmc #star #stars #lensing #microlensing #universe #cosmology #astronomy #astrophysics #astrodon #space #science #research #nature #cover #naturecover

Nature Journal astronomy covers: 1993

The footprint of dark matter?

Feature articles on gravitational microlensing by dark objects by two collaborations: MACHO and EROS + News & Views paper "In search of the halo grail" by Craig J. Hogan

https://nature.com/nature/volumes/365/issues/6447

#darkmatter #machos #macho #eros #galaxy #milkyway #galaxies #lmc #star #stars #lensing #microlensing #universe #cosmology #astronomy #astrophysics #astrodon #space #science #research #nature #cover #naturecover

Nature Journal astronomy covers: 1993

The footprint of dark matter?

Feature articles on gravitational microlensing by dark objects by two collaborations: MACHO and EROS + News & Views paper "In search of the halo grail" by Craig J. Hogan

https://nature.com/nature/volumes/365/issues/6447

#darkmatter #machos #macho #eros #galaxy #milkyway #galaxies #lmc #star #stars #lensing #microlensing #universe #cosmology #astronomy #astrophysics #astrodon #space #science #research #nature #cover #naturecover

Nature Journal astronomy covers: 1993

The footprint of dark matter?

Feature articles on gravitational microlensing by dark objects by two collaborations: MACHO and EROS + News & Views paper "In search of the halo grail" by Craig J. Hogan

https://nature.com/nature/volumes/365/issues/6447

#darkmatter #machos #macho #eros #galaxy #milkyway #galaxies #lmc #star #stars #lensing #microlensing #universe #cosmology #astronomy #astrophysics #astrodon #space #science #research #nature #cover #naturecover

Nature Journal astronomy covers: 1993

The footprint of dark matter?

Feature articles on gravitational microlensing by dark objects by two collaborations: MACHO and EROS + News & Views paper "In search of the halo grail" by Craig J. Hogan

https://nature.com/nature/volumes/365/issues/6447

#darkmatter #machos #macho #eros #galaxy #milkyway #galaxies #lmc #star #stars #lensing #microlensing #universe #cosmology #astronomy #astrophysics #astrodon #space #science #research #nature #cover #naturecover

KMT-2021-BLG-1122 - the first #microlensing #triple #stellar system: https://arxiv.org/abs/2302.05613

"Astronomers using the NASA/ESA #Hubble Space Telescope have for the first time directly measured the mass of a single, isolated white dwarf #star – the surviving core of a burned-out sunlike star."

Using gravitational #microlensing data, researchers determined the mass of the isolated white dwarf LAWD 37 is 0.56 times the mass of the Sun.

📷: NASA, ESA, P. McGill (Univ. of California, Santa Cruz and University of Cambridge), K. Sahu (STScI), J. Depasquale (STScI)

First semi-empirical test of the #whitedwarf mass-radius relationship using a single white dwarf via #astrometric #microlensing: https://arxiv.org/abs/2206.01814 -> Astronomers using NASA's #Hubble Space Telescope have for the first time directly measured the #mass of a single, isolated white dwarf: https://hubblesite.org/contents/news-releases/2023/news-2023-004

First semi-empirical test of the #whitedwarf mass-radius relationship using a single white dwarf via #astrometric #microlensing: https://arxiv.org/abs/2206.01814 -> Astronomers using NASA's #Hubble Space Telescope have for the first time directly measured the #mass of a single, isolated white dwarf: https://hubblesite.org/contents/news-releases/2023/news-2023-004

First semi-empirical test of the #whitedwarf mass-radius relationship using a single white dwarf via #astrometric #microlensing: https://arxiv.org/abs/2206.01814 -> Astronomers using NASA's #Hubble Space Telescope have for the first time directly measured the #mass of a single, isolated white dwarf: https://hubblesite.org/contents/news-releases/2023/news-2023-004

First semi-empirical test of the #whitedwarf mass-radius relationship using a single white dwarf via #astrometric #microlensing: https://arxiv.org/abs/2206.01814 -> Astronomers using NASA's #Hubble Space Telescope have for the first time directly measured the #mass of a single, isolated white dwarf: https://hubblesite.org/contents/news-releases/2023/news-2023-004

First semi-empirical test of the #whitedwarf mass-radius relationship using a single white dwarf via #astrometric #microlensing: https://arxiv.org/abs/2206.01814 -> Astronomers using NASA's #Hubble Space Telescope have for the first time directly measured the #mass of a single, isolated white dwarf: https://hubblesite.org/contents/news-releases/2023/news-2023-004

#Congratulations to my student, David Specht, now Dr David Specht, following his #PhDViva today. David's #thesis included the development of the most accurate and best tested model of #gravitational #microlensing in our #Galaxy, as well as modelling of the first #discovery from #space of an #exoplanet detected by the microlensing effect. I'm one proud #supervisor.

I'm very privileged in my job to go to amazing #astronomical observatories. This one is the #DanishTelescope at the #ESO #LaSilla #Observatory at the edge of the #Atacama desert in #Chile. I was inside the dome observing #microlensing events during the course of this #timelapse. Look out for the glorious view of the #Galactic Centre near the end.

If you like this, feel free to boost it so that others can enjoy it too.

https://youtu.be/JSXnMcy4Cj8

Great to see interest in my thread yesterday on #exoplanet detection using #microlensing.

https://astrodon.social/@eamonn_kerins/109308901344825202

I promised threads on 2 other topics: detecting exoplanet #atmospheres using #TransmissionSpectroscopy, and also on #SETI - the Search for #ExtraterrestrialIntelligence.

I'll leave the thread on exoplanet atmospheres to next month to chime (hopefully) with some new work we're doing here at the #UniversityOfManchester.

So, later this week, we'll talk about hunting for #aliens! 👽

@nbatalha @ec_euclid #Microlensing can find #Earth mass #planets, though mostly around the most common stars (low mass). But maybe ~10% of them will involve FGK stars like the #Sun. Also, microlensing planets are typically found from just outside the outer #HabitableZone and beyond. By measuring their abundance we will get a constraint on abundances derived from transit+microlensing via interpolation across the HZ, so (hopefully) a more reliable overall measure of Earth analogues.

@nbatalha @ec_euclid I'm hoping so. But there are no guarantees yet since #euclid has to deliver on the #cosmology #science first and foremost. But I love the fact that one of #kepler's last acts (a mission that you were so deeply involved with of course!) was to find a #microlensing #planet. I feel like it's passing the baton on to #Roman to extend #census.

The last candidate we found was not an #FFP. Instead it was a bound #planet. In fact it is the most distant planet yet found by #Kepler and is twice as far away as the next most distant. It's the first bound planet to be discovered from #space using #microlensing. Remarkably it's of the closest analogues to Jupiter yet found, though it orbits a #star 60% the mass of the #Sun. Theory suggests it is almost too small to host a Jupiter. https://arxiv.org/abs/2203.16959 (8/n)

We recently tested out the idea of doing #microlensing from #space using the #NASA #Kepler #telescope. Kepler has so far found thousands of #exoplanets but using the #TransitMethod, not microlensing. But in 2016, before it stopped working, it did a mini microlensing survey. Kepler wasn't designed to do microlensing and colleagues spent years developing a #DataReduction pipeline that would work. Then, my #postdoc Iain McDonald and I built a sophisticated pipeline to find #planet candidates (6/n)

#ESA may also get in on the act. Whilst the main science goal of its @ec_euclid mission is #cosmology, #Euclid may conduct an #exoplanet #microlensing survey as an additional science project. Euclid even has an exoplanet #science #WorkingGroup. I'm current the deputy lead for that group and will be the co-lead next year. So I'm personally very excited about this possibility. As we've recently shown, Euclid and #Roman could even work together to improve the science: https://doi.org/10.1051/0004-6361/202140351 (5/n)

So far #microlensing surveys have been done mostly from the ground and it's hard work. We need to look at very crowded star fields close to the centre of our #Galaxy. But the #Earths #atmosphere blurs the stars, making it difficult to tell them apart. It would be easier to do this with a dedicated #space #telescope.

#NASA is currently building the #NancyGraceRomanSpaceTelescope. #Roman will conduct a dedicated microlensing survey capable of finding cool planets as small as #Mars. (4/n)

One method is #microlensing. #Einstein in his #Theory of #GeneralRelativity predicted that light can be deflected by #gravity. Microlensing is a great way to find cool #planets that orbit further out from their #HostStar than those that can be seen with the #TransitMethod. We can spot a number of these #signals each year by monitoring hundreds of millions of #stars every 15 minutes or so for several months per year. That's a lot of #data to process, but #computers are fast these days. (3/n)

Since I am new to #mastodon I'm going to do some threads about some #work I'm involved with. My areas or #research focus on #exoplanet #detection using the #microlensing technique, probing exoplanet #atmospheres using #TransmissionSpectroscopy, and also #GameTheory based approaches to #SETI - the Search for #ExtraTerrestialIntelligence.

Today I'll start with a 🧵 exoplanet detection with microlensing... (1/n)

Since I am new to #mastodon I'm going to do some threads about some #work I'm involved with. My areas or #research focus on #exoplanet #detection using the #microlensing technique, probing exoplanet #atmospheres using #TransmissionSpectroscopy, and also #GameTheory based approaches to #SETI - the Search for #ExtraTerrestialIntelligence.

Today I'll start with a 🧵 exoplanet detection with microlensing... (1/n)

Since I am new to #mastodon I'm going to do some threads about some #work I'm involved with. My areas or #research focus on #exoplanet #detection using the #microlensing technique, probing exoplanet #atmospheres using #TransmissionSpectroscopy, and also #GameTheory based approaches to #SETI - the Search for #ExtraTerrestialIntelligence.

Today I'll start with a 🧵 exoplanet detection with microlensing... (1/n)

Since I am new to #mastodon I'm going to do some threads about some #work I'm involved with. My areas or #research focus on #exoplanet #detection using the #microlensing technique, probing exoplanet #atmospheres using #TransmissionSpectroscopy, and also #GameTheory based approaches to #SETI - the Search for #ExtraTerrestialIntelligence.

Today I'll start with a 🧵 exoplanet detection with microlensing... (1/n)

Since I am new to #mastodon I'm going to do some threads about some #work I'm involved with. My areas or #research focus on #exoplanet #detection using the #microlensing technique, probing exoplanet #atmospheres using #TransmissionSpectroscopy, and also #GameTheory based approaches to #SETI - the Search for #ExtraTerrestialIntelligence.

Today I'll start with a 🧵 exoplanet detection with microlensing... (1/n)

A more technical #introduction for #Astrodon folk. I'm a senior lecturer in #physics and #astronomy at the #university of #Manchester, based at #jodrellbank. I work on the detection of cool #exoplanets using #microlensing. I also lead a #transmission #spectroscopy survey of exoplanet #atmospheres called SPEARNET. Additionally, I've used ideas from #gametheory to develop smart #SETI strategies. Currently deputy lead of #ESA @ec_euclid exoplanet science working group. Lead from next March.