The European Space Agency is shaping its science programme for the period 2035-2050
After the Horizon 2000 programme started in 1983, followed by its extension Horizon 2000 Plus, the European Space Agency (ESA) is committed until 2035 into the Cosmic Vision programme that includes the launches of Athena (2031) and LISA (2034).
The hot heart of the SN 1987A supernova
An international team, led by astronomers from Cardiff University, with the contribution of the Astrophysics Department of CEA-Irfu, may have spotted for the first time the compact remains of the last star explosion visible by eye that occurred on February 23, 1987 in a nearby galaxy, the Large Magellanic Cloud, only 160 000 light-years away.
Optical follow-up of gravitionnal waves
The first results of the space mission SVOM (for Space-based multi-band astronomical Variable Objects Monitor) have just fallen before the launch scheduled for the end of 2021.
The LISA experiment will be able to detect planets throughout the Galaxy
The recent detections of gravitational waves, tiny vibrations of space-time, have opened a new window in the observation of the Universe.
Two chimneys of hot gas found around the central back hole
Thanks to the X-ray satellites Chandra and XMM-Newton, an international team including the Department of Astrophysics of CEA-Irfu has just discovered the existence of two bubbles of hot gas escaping to distances of about 500 light-years, on both sides of the massive black hole environment, in the center of our galaxy.
Outstanding results from this Japanese X-rays observatory
Despite a short period of activity, the japanese space agency (Jaxa) Hitomi satellite has shown its full potential by delivering relevant information’s on several celestial objects.
THESEUS pre-selected for an ESA M5 mission
On May 7, 2018, the European Space Agency (ESA) announced the three selected space missions, out of the 25 proposed, for the fifth ESA middle class mission in its scientific program Cosmic Vision, whose launch date is planned in 2032.
The HESS international collaboration, to which CNRS and CEA contribute, has published the results of fifteen years of gamma ray observations of the Milky Way.
The very first moments of a star explosion
An unprecedented observation of a supernova, an explosion of a massive star, was captured in its early days by an amateur astronomer, at the exact moment when the supernova became visible in the sky.
The discovery of a new type of gravitational wave
Using a range of detectors developed with the participation of the CEA, physicists at CEA-Irfu have scrutinized the region from which the gravitational wave was detected on August 17, 2017 by LIGO-VIRGO facilities.
The Cherenkov Telescope Array (CTA) consortium brings together 1300 scientists from 32 countries. They have published their scientific aims in a document over 200 pages long.
A laboratory scale-model of accretion column onto a highly magnetized dense star
Scientists from a large international collaboration (Oxford, AWE, CEA, LULI, Observatoire de Paris, University of Michigan, University of York and STFC Rutherford Appleton Laboratory) have succeeded for the first time in generating a laboratory analogue of a strong shock that is produced when matter falls at very high speed on the surface of extremely dense stars called white dwarfs.
An exceptional flaring activity from a galactic black hole revealed by the INTEGRAL satellite
Analysis of the high-energy emission from the microquasar V404 Cygni has lead to the discovery of gusts of electron and positron (the electron anti-particle) plasma.
Launch of the Japanese X-ray Astronomy satellite Astro-H
The X-ray astronomy satellite Astro-H was successfully launched on 17 February 2016  at 17H 45 (UT 8H45) from the JAXA Tanegashima Space Center in Japan. The satellite was put into orbit 14 min later and the first tests started.
Recent change in the optical and gamma-ray polarization observed in the center of the Crab Nebula
The Crab Nebula, thought for decades to be a "standard candle", has recently seen this status challenged by the observation of intense high-energy gamma rays flares.
The enigma of the quasi-periodic oscillations
A team of researchers from CEA (Astrophysical Department and CEA-DAM) and the LUTH Laboratory (Paris Observatory) has just published a comprehensive study of an enigmatic phenomenon of quasi-periodic oscillations at the surface of strongly magnetic white dwarfs also called "Polars ".
Progress and involvement of the CEA into this chinese and french space mission
2014 has been a fruitful year for SVOM (Space-based multiband astronomical Variable Objects Monitor), a chinese and french space mission dedicated to the study of gamma-ray bursts.
Detection by XMM-Newton of a periodic absorption line close to the surface of a Magnetar
The intense and sporadic activity of Magnetars, rotating neutron stars, has its origin in the current model from their extreme magnetic field.
Computation of the X-ray emission of a supernova remnant
An international team of astrophysicists, including Samar Safi-Harb and Gilles Ferrand at the University of Manitoba (Canada) and Anne Decourchelle from the Astrophysical Department-AIM Laboratory (CEA Saclay - France), has produced the first 3D simulations of supernova remnants (SNRs) showing the effect of particle acceleration at the wave fronts generated by these powerful X-ray sources in our galaxy.
New type of cosmic ray discovered after 100 years
Using the European X-ray astronomy satellite XMM-Newton [1], researchers from CNRS [2] and CEA [3] have discovered a new source of cosmic rays.
Discovery of a transient radio jet from an intermediate-mass black hole
Sporadic ejections of matter are observed in the form of radio jets from supermassive black holes in active galaxies as well as from galactic binary systems hosting a black hole of several solar masses.
First experimental approach of the asymmetric explosion of a star
The explosive death of massive stars begins with the collapse of their iron core which gives birth to a neutron star. Despite spherical initial conditions, this explosion can kick the neutron star several hundred kilometers per second.
First gamma-ray polarisation measure around a galactic black hole
Prototype of the X-ray binary systems harboring a black hole, Cygnus X-1 is the subject of many studies since its discovery in the 1960s.
Discovery of a magnetar with a magnetic field similar to the one of common pulsars
Magnetars form a class of neutron stars with a much higher (100-1000 times) magnetic field with respect to common rotation powered pulsars. This extreme magnetic field is currently believed to be the cause of their unpredictable and intense activity.
News observations with the refurbished Hubble Space Telescope
An international team of astronomers/astrophysicists that includes a member of the Service d'Astrophysique  (CEA-Irfu,  Saclay) has obtained new data of the spectacular surroundings of the famous supernova SN 1987A using the recently refurbished Hubble Space Telescope.
Molecular clouds reveal a giant outburst of the supermassive black hole at the centre of the Galaxy
The central black hole of the Galaxy, today surprisingly quiet, has undergone, several hundred years ago, a violent phase of activity.
The influence of particle acceleration
For the first time, the events following the explosion of a star have now been simulated in three dimensions by a team from the Astrophysics Division of CEA-IRFU.
Microquaser gamma emission observed for the first time
For the first time, the high-energy gamma rays emitted by a microquasar have been spotted with certainty, thanks to NASA's Fermi telescope.
The FERMI observatory has discovered the most energetic gamma-ray burst ever detected
The Fermi gamma-ray space telescope  [1] has detected the most violent gamma-ray burst ever recorded; a gigantic explosion marking the death of a massive star.
Dense electron clouds around neutron stars.
Neutron stars are the most magnetized objects in our Universe.


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