A science-oriented feed about high-energy astronomy and astroparticle physics! Part of the Astronomy feeds network. Astronomers can sign up to post here via @bot.astronomy.blue Contains posts from signed up users with #highenergyastro. Posts here are also included in the main Astronomy feed.
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arxiv.org
Multidisciplinary Science in the Multimessenger Era
Astrophysical observations of the cosmos allow us to probe extreme physics and answer foundational questions on our universe. Modern astronomy is increasingly operating under a holistic approach, prob...
Huei Sears, PhD 🌟@starlights.bsky.social
v excited about this new HST program on the Iax SN 2012Z led by Rutgers post-bacc, Michaela Schwab! Recent work in McCully+ 2022 showed a remarkable late-time flux excess, and we're hoping to use HST/ACS ~ one last time ~ to see if it's still there. v exciting ! 🔭 www.stsci.edu/hst-program-...
www.stsci.edu
tinyurl.com
Astrophysics Data System
A powerful, streamlined new Astrophysics Data System
Milena Crnogorčević@astronomilena.bsky.social
📜 HOT OFF THE PRESS: Carlos Blanco, @trlinden.bsky.social, and yours truly searched for gamma-ray counterpart to the *most* energetic neutrino ever seen! #KM3NeT what we found (and didn't find) helps us understand the high-energy universe a bit better! let's dig in. 🧵
arxiv.org
Prompt Periodicity in the GRB 211211A Precursor: Black-hole or magnetar engine?
The merger origin long GRB 211211A was a class (re-)defining event. A precursor was identified with a $\sim 1$ s separation from the main burst, as well as a claimed candidate quasi-periodic oscillati...
www.esa.int
XRISM factsheet
Overview of the XRISM mission
arxiv.org
Joint Radiative and Kinematic Modelling of X-ray Binary Ejecta: Energy Estimate and Reverse Shock Detection
Black hole X-ray binaries in outburst launch discrete, large-scale jet ejections which can propagate to parsec scales. The kinematics of these ejecta appear to be well described by relativistic blast ...
www.esa.int
Mission accomplished for Integral, ESA’s gamma-ray telescope
science.nasa.gov
Hubble Spies a Spiral That May Be Hiding an Imposter - NASA Science
The sparkling spiral galaxy gracing this NASA/ESA Hubble Space Telescope image is UGC 5460, which sits about 60 million light-years away in the constellation
![Detection of [C\,{\sc i}] Emission in Nebular Spectra of a Peculiar Type Ia Supernova 2022pul](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:euam3olefatfyjtsbkvpo4ul/bafkreibovsdjjx5nwirhfqsx3c5njuv4rsxz3d37amiwubqoo7eiht7hke@jpeg)
arxiv.org
Detection of [C\,{\sc i}] Emission in Nebular Spectra of a Peculiar Type Ia Supernova 2022pul
SN~2022pul gains special attention due to its possible origin of a super-Chandarsekhar-mass white dwarf explosion (or called a 03fg-like type Ia supernova), which shows prominent [O\,{\sc i}], [Ne\,{\...
arxiv.org
Cross-Comparison of Sampling Algorithms for Pulse Profile Modeling of PSR J0740+6620
In the last few years, NICER data has enabled mass and radius inferences for various pulsars, and thus shed light on the equation of state for dense nuclear matter. This is achieved through a techniqu...
www.esa.int
Einstein Probe catches X-ray odd couple
Lobster-eye satellite Einstein Probe captured the X-ray flash from a very elusive celestial pair. The discovery opens a new way to explore how massive stars interact and evolve, confirming the unique ...
arxiv.org
Scaling relations for the uncertainty in neutron star radius inferred from pulse profile modelling: the effect of spin rate
Pulse profile modelling using X-ray data from NICER permits the inference of mass and radius for rotation-powered millisecond pulsars. This in turn constrains the equation of state of cold dense matte...
www.allotsego.com
Citizen Science: New Physics Mystery Series: Developing Nancy Drew Grit
In 2023, this “Citizen Science” column focused on distinguishing science from pseudoscience; in 2024, we sought to demystify energy by studying the various flavors of real energy. This year, we’ll fur...
Gernot Münster@gernot-muenster.bsky.social
Finally, a story. When Pauli went to heaven, he demanded to speak to God, and asked him about the value of the fine structure constant. God pulled out a stack of notes and began calculating on the board. After three minutes, Pauli shouted "That's wrong!" 9/9
Emily Hunt 