SPEX X-ray Spectral Fitting Package
@spexxray.bsky.social
SPEX is a software package for high-resolution X-ray spectroscopy in astrophysics. It is optimized to analyse spectra from the XMM-Newton and Chandra gratings, and the XRISM resolve instrument.
We have a new SPEX newsletter! If you want to keep up-to-date with SPEX developments, then please subscribe. We intent to send the newsletter about 3 times a year. You can find the subscribe button on our SPEX page (website of @sronspace.bsky.social): www.sron.nl/en/pillars/s...
Astrophysics - SRON | Space Research Organisation Netherlands
Some objects and phenomena in the Universe can only be properly studied from space. For instance because they mainly emit radiation that is blocked by the Earth's atmosphere, such as X-rays or infrared light. Weak light sources such as exoplanets are also best observed with space telescopes, because those are unhindered by light pollution and vibrations in the air.
www.sron.nl
December 1, 2025 at 8:01 AM
We have a new SPEX newsletter! If you want to keep up-to-date with SPEX developments, then please subscribe. We intent to send the newsletter about 3 times a year. You can find the subscribe button on our SPEX page (website of @sronspace.bsky.social): www.sron.nl/en/pillars/s...
We have released SPEX 3.08.02! The new version, among other things, features a new table model that can use Xspec formatted table models, like APEC and Xillver. The new version is available here: spex-xray.github.io/spex-help/ge...
1.1. How to install SPEX — SPEX Help Center 3.08.02 documentation
spex-xray.github.io
October 10, 2025 at 6:44 PM
We have released SPEX 3.08.02! The new version, among other things, features a new table model that can use Xspec formatted table models, like APEC and Xillver. The new version is available here: spex-xray.github.io/spex-help/ge...
Are you a researcher in high-energy astrophysics and do you want to visit @sronspace.bsky.social? There is a new call for visits through the ACME project. See the ACME website for details: www.acme-astro.eu/tna-calls-ce...
TNA Calls: Centre of Expertise - ACME
www.acme-astro.eu
October 1, 2025 at 10:24 AM
Are you a researcher in high-energy astrophysics and do you want to visit @sronspace.bsky.social? There is a new call for visits through the ACME project. See the ACME website for details: www.acme-astro.eu/tna-calls-ce...
How do galaxies evolve? Sometimes elliptical galaxies do not evolve like the majority of their type. This paper studies some massive compact relic galaxies, who managed to avoid collisions with their neighbours for a long while. With help from SPEX for analysing the RGS data: doi.org/10.48550/arX...
X-ray properties of compact elliptical galaxies
We present the X-ray analysis of seven local compact elliptical galaxies (cEGs), selected for their morphological resemblance to high-redshift red nuggets. As likely descendants of the red nugget popu...
doi.org
May 22, 2025 at 9:42 AM
How do galaxies evolve? Sometimes elliptical galaxies do not evolve like the majority of their type. This paper studies some massive compact relic galaxies, who managed to avoid collisions with their neighbours for a long while. With help from SPEX for analysing the RGS data: doi.org/10.48550/arX...
How SPEX helps to find out what the winds around a supermassive black hole looks like: doi.org/10.1051/0004...
Investigating the complex absorbers of Mrk 766 with XMM-Newton | Astronomy & Astrophysics (A&A)Mendeley
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
doi.org
May 13, 2025 at 1:21 PM
How SPEX helps to find out what the winds around a supermassive black hole looks like: doi.org/10.1051/0004...
Looking for absorption from cosmic web filaments with the help of SPEX: "X-ray absorption lines in FUV-detected quasars: I. Sample and analysis of the XMM–Newton and Chandra data" doi.org/10.1093/mnra...
X-ray absorption lines in FUV-detected quasars: I. Sample and analysis of the XMM–Newton and Chandra data
ABSTRACT. This paper presents initial results of a systematic search for resonance X-ray absorption lines from H–like O VIII and $He$–like O vii caused by
doi.org
May 13, 2025 at 1:14 PM
Looking for absorption from cosmic web filaments with the help of SPEX: "X-ray absorption lines in FUV-detected quasars: I. Sample and analysis of the XMM–Newton and Chandra data" doi.org/10.1093/mnra...
The deadline for the ACME call for visits to @sronspace.bsky.social is April 6th! If you are a researcher and want to visit us to learn about X-ray spectroscopy, please apply through the link below.
There is a new opportunity for researchers to visit SRON and learn about X-ray spectroscopy. Your visit can be funded through the ACME Project. The deadline for submissions is April 6th 2025. More details about the program and other host institutes can be found here: acme.in2p3.fr/tna-calls-ce...
TNA Calls: Centre of Expertise - ACME
acme.in2p3.fr
April 2, 2025 at 9:15 AM
The deadline for the ACME call for visits to @sronspace.bsky.social is April 6th! If you are a researcher and want to visit us to learn about X-ray spectroscopy, please apply through the link below.
Reposted by SPEX X-ray Spectral Fitting Package
Proudly launching our new brand identity!
This modern identity marks the beginning of a new chapter for SRON as we continue our mission to advance space research and technology.
A new brand identity also means a brand-new website! Check it out: www.sron.nl
#newidentity #launchevent #sron
This modern identity marks the beginning of a new chapter for SRON as we continue our mission to advance space research and technology.
A new brand identity also means a brand-new website! Check it out: www.sron.nl
#newidentity #launchevent #sron
March 26, 2025 at 3:38 PM
Proudly launching our new brand identity!
This modern identity marks the beginning of a new chapter for SRON as we continue our mission to advance space research and technology.
A new brand identity also means a brand-new website! Check it out: www.sron.nl
#newidentity #launchevent #sron
This modern identity marks the beginning of a new chapter for SRON as we continue our mission to advance space research and technology.
A new brand identity also means a brand-new website! Check it out: www.sron.nl
#newidentity #launchevent #sron
Our institute @sronspace.bsky.social has a new logo and website. And they are active now on Bluesky! Check it out!
Proudly launching our new brand identity!
This modern identity marks the beginning of a new chapter for SRON as we continue our mission to advance space research and technology.
A new brand identity also means a brand-new website! Check it out: www.sron.nl
#newidentity #launchevent #sron
This modern identity marks the beginning of a new chapter for SRON as we continue our mission to advance space research and technology.
A new brand identity also means a brand-new website! Check it out: www.sron.nl
#newidentity #launchevent #sron
March 26, 2025 at 3:41 PM
Our institute @sronspace.bsky.social has a new logo and website. And they are active now on Bluesky! Check it out!
There is a new opportunity for researchers to visit SRON and learn about X-ray spectroscopy. Your visit can be funded through the ACME Project. The deadline for submissions is April 6th 2025. More details about the program and other host institutes can be found here: acme.in2p3.fr/tna-calls-ce...
TNA Calls: Centre of Expertise - ACME
acme.in2p3.fr
March 11, 2025 at 8:05 AM
There is a new opportunity for researchers to visit SRON and learn about X-ray spectroscopy. Your visit can be funded through the ACME Project. The deadline for submissions is April 6th 2025. More details about the program and other host institutes can be found here: acme.in2p3.fr/tna-calls-ce...
Reposted by SPEX X-ray Spectral Fitting Package
Hi all! We are the HEACIT working group, a collaboration between scientists and software engineers in the field of high-energy astrophysics. We aim to coordinate various aspects of data analysis and software development together to improve the use of our data analysis tools.
December 16, 2024 at 3:20 PM
Hi all! We are the HEACIT working group, a collaboration between scientists and software engineers in the field of high-energy astrophysics. We aim to coordinate various aspects of data analysis and software development together to improve the use of our data analysis tools.
Today, XMM-Newton celebrates it's 25 year launch day 🎂https://www.esa.int/Science_Exploration/Space_Science/XMM-Newton/XMM-Newton_celebrates_25_years_of_breakthroughs
XMM-Newton celebrates 25 years of breakthroughs
Today, ESA’s powerful X-ray observatory, XMM-Newton, celebrates 25 years in space. From planets to black holes, the space telescope has delivered many ground-breaking observations of a variety of cele...
www.esa.int
December 10, 2024 at 10:03 AM
Today, XMM-Newton celebrates it's 25 year launch day 🎂https://www.esa.int/Science_Exploration/Space_Science/XMM-Newton/XMM-Newton_celebrates_25_years_of_breakthroughs
Tomorrow, it is 25 years ago that the #XMM-Newton X-ray observatory was launched by ESA. Amazingly, the satellite is doing great! It still performs observations of the X-ray universe, from the hot gas swirling into black holes to the hot gas in the cosmic web. Stay tuned www.esa.int/Science_Expl...
December 9, 2024 at 11:12 AM
Tomorrow, it is 25 years ago that the #XMM-Newton X-ray observatory was launched by ESA. Amazingly, the satellite is doing great! It still performs observations of the X-ray universe, from the hot gas swirling into black holes to the hot gas in the cosmic web. Stay tuned www.esa.int/Science_Expl...
SPEX is moving away from X, but not from X-rays! Wishing everybody blue skies ☀️ and good space weather 🛰️ for X-ray observations. More about SPEX software: www.sron.nl/astrophysics...
SPEX X-ray spectral analysis software - SRON Netherlands Institute for Space Research
SPEX is an X-ray spectral analysis software package optimized for the interpretation of high-resolution astrophysical X-ray spectra.
www.sron.nl
November 19, 2024 at 1:53 PM
SPEX is moving away from X, but not from X-rays! Wishing everybody blue skies ☀️ and good space weather 🛰️ for X-ray observations. More about SPEX software: www.sron.nl/astrophysics...