Title |
Date |
Dissecting Perseus |
![XRISM high-resolution X-ray spectrum of the Perseus Cluster and composite image of the cluster XRISM high-resolution X-ray spectrum of the Perseus Cluster and composite image of the cluster](/Images/objects/heapow/large_scale_structure/perseus_xrism_small.jpg) |
March 11, 2024 |
The Astounding X-ray Sky |
![A map of half the sky from the first ROSITA Data Release A map of half the sky from the first ROSITA Data Release](/Images/objects/heapow/large_scale_structure/edr1_small.jpg) |
February 5, 2024 |
Black Hole Tempest in a Petri Dish |
![Siulating the disturbed hot gas in the Perseus cluster of galaxies in a petri dish Siulating the disturbed hot gas in the Perseus cluster of galaxies in a petri dish](/Images/objects/heapow/large_scale_structure/perseus_water_small.jpg) |
October 16, 2023 |
Large-Scale Weight Gain |
![Chandra X-ray and JWST IR composite image of the El Gordo cluster Chandra X-ray and JWST IR composite image of the El Gordo cluster](/Images/objects/heapow/large_scale_structure/elgordo_cxcjwst_small.jpg) |
August 14, 2023 |
Spacetime, Shaken and Stirred |
![Artistic represenation of the thrumming of spacetime from the gravitational wave background as detected by pulsar timing arrays Artistic represenation of the thrumming of spacetime from the gravitational wave background as detected by pulsar timing arrays](/Images/objects/heapow/large_scale_structure/gwb_nanograv_small.jpg) |
July 3, 2023 |
Surfing Perseus |
![Enhanced image of X-ray emission in the Perseus cluster Enhanced image of X-ray emission in the Perseus cluster](/Images/objects/heapow/large_scale_structure//perseus_waves_small.jpg) |
May 29, 2023 |
The Song of a Supermassive Black Hole |
![A frame from the sonifcation of the X-ray emission around the supermassive black hole in the Perseus Cluster A frame from the sonifcation of the X-ray emission around the supermassive black hole in the Perseus Cluster](/Images/objects/heapow/large_scale_structure/perseuscluster_sonified_small.jpg) |
April 3, 2023 |
The Raving |
![The Chandra Deep Field South: Chandra's view of ancient, monstrous black holes feasting in a field of celestial gore The Chandra Deep Field South: Chandra's view of monstrous, ancient black holes feasting in a field of celestial gore](/Images/objects/heapow/large_scale_structure/dfs_chandra_small.jpg) |
October 31, 2022 |
Dark and Light |
![Composite JWST infrared and Chandra X-ray image of the galaxy cluster SMACS J0723 Composite JWST infrared and Chandra X-ray image of the galaxy cluster SMACS J0723](/Images/objects/heapow/large_scale_structure/smacs0723_composite_small.jpg) |
October 10, 2022 |
A Strangely Growing Universe? |
![Map of possible variations in the expansion of the Universe derived from X-ray observations of galaxy clusters Map of possible variations in the expansion of the Universe derived from X-ray observations of galaxy clusters](/Images/objects/heapow/large_scale_structure/expandingU_xray_small.jpg) |
July 18, 2022 |
Revealing a Shocking Merger |
![Composite X-ray (purple) and optical image of the merging cluseter Abell 2146 Composite X-ray (purple) and optical image of the merging cluseter Abell 2146](/Images/objects/heapow/large_scale_structure/a2146_chandra_small.jpg) |
June 27, 2022 |
Growing the Cosmic Web |
![X-ray and optical image of the Spiderweb proto-cluster X-ray and optical image of the Spiderweb proto-cluster](/Images/objects/heapow/large_scale_structure/spiderweb_chandra_small.jpg) |
April 18, 2022 |
One Sky |
![First complete all sky X-ray map by eROSITA First complete all sky X-ray map by eROSITA](/Images/objects/heapow/large_scale_structure/erosita_asm_small.jpg) |
March 14, 2022 |
Reverberating Through History |
![Illustration of reflection from the accretion disc of material orbiting a supermassive black hole](/Images/objects/heapow/large_scale_structure/xrayreverb_nustar_small.jpg) |
November 22, 2021 |
The Death of the Red Mask, Redux |
![Happy Halloween - Stay Safe Happy Halloween - Stay Safe](/Images/objects/heapow/large_scale_structure/reddeath_chandra_small.jpg) |
October 25, 2021 |
Collision of Clusters |
![X-ray image of intracluster gas in the Abell 1775 cluster from Chandra X-ray image of intracluster gas in the Abell 1775 cluster from Chandra](/Images/objects/heapow/large_scale_structure/a1775_chandra_small.jpg) |
August 16, 2021 |
Digging for Darkness |
![The Wide Chandra Deep Field South, one of the XMM-SERVS fields The Wide Chandra Deep Field South, one of the XMM-SERVS fields](/Images/objects/heapow/large_scale_structure/xmm_servs_small.jpg) |
June 21, 2021 |
The Cause of Cosmic Depression |
![Swift, GMRT and optical image of the nearby cluster of galaxies CL 2015 Swift, GMRT and optical image of the nearby cluster of galaxies CL 2015](/Images/objects/heapow/large_scale_structure/cl2015_swift_small.jpg) |
February 8, 2021 |
The Death of the Red Mask |
![Happy Halloween - Stay Safe Happy Halloween - Stay Safe](/Images/objects/heapow/large_scale_structure/reddeath_chandra_small.jpg) |
October 31, 2020 |
Monads of the Universe |
![eRosita view of the Shapley Supercluster eRosita view of the Shapley Supercluster](/Images/objects/heapow/large_scale_structure/shapley_erosita_small.jpg) |
August 10, 2020 |
The Hot, Energetic Universe |
![First complete all sky X-ray map by eROSITA First complete all sky X-ray map by eROSITA](/Images/objects/heapow/large_scale_structure/erosita_asm_small.jpg) |
June 29, 2020 |
The Hidden Universe Revealed |
![The first X-ray all-sky survey from ART-XC The first X-ray all-sky survey from ART-XC](/Images/objects/heapow/large_scale_structure/art-xc_survey_small.jpg) |
June 22, 2020 |
Mapping the Universe |
![First results from the eRosita All-Sky Survey First results from the eRosita All-Sky Survey](/Images/objects/heapow/large_scale_structure/eRASS_2020_small.jpg) |
May 18, 2020 |
Pulling Some Strings |
![Chandra X-ray image of the Perseus cluster Chandra X-ray image of the Perseus cluster](/Images/objects/heapow/large_scale_structure/axion_chandra_small.jpg) |
March 23, 2020 |
The Big Blowout in Ophiuchus |
![X-ray and Radio image of an eruption from the black hole in the Ophiuchus galaxy cluster X-ray and Radio image of an eruption from the black hole in the Ophiuchus galaxy cluster](/Images/objects/heapow/large_scale_structure/blowout_xmm_chandra_small.jpg) |
March 2, 2020 |
The Beginning of the X-ray Sky |
![A patch of the sky from start of the eRosita all-sky survey A patch of the sky from start of the eRosita all-sky survey](/Images/objects/heapow/large_scale_structure/erosita_patch1_small.jpg) |
February 3, 2020 |
ChandraXX: Resolving Physics in Perseus |
![Enhanced image of X-ray emission in the Perseus cluster Enhanced image of X-ray emission in the Perseus cluster](/Images/objects/heapow/large_scale_structure/perseus_chandraXX_small.jpg) |
August 19, 2019 |
Inexorable |
![Chandra X-ray image of two galaxy clusters about to collide Chandra X-ray image of two galaxy clusters about to collide](/Images/objects/heapow/large_scale_structure/clustermerge_chandra_small.jpg) |
July 1, 2019 |
Atoms in Solitude |
![X-ray and optical image of the Coma cluster X-ray and optical image of the Coma cluster](/Images/objects/heapow/large_scale_structure/comacluster_chandra_small.jpg) |
June 24, 2019 |
The Body of the Universe, Size XXL |
![365 clusters in the XXL Survey of clusters of galaxies 365 clusters in the XXL Survey of clusters of galaxies](/Images/objects/heapow/large_scale_structure/xxls_xmm_small.jpg) |
June 17, 2019 |
The CNB |
![The energy content of the Universe, then and now The energy content of the Universe, then and now](/Images/objects/heapow/large_scale_structure/cnb_small.jpg) |
March 11, 2019 |
Once Lost, Now Found? |
![Absorption signature of the warm hot interstellar medium Absorption signature of the warm hot interstellar medium](/Images/objects/heapow/large_scale_structure/whim_chandra.jpg) |
March 4, 2019 |
Back to Work |
![Multiwavelength study of a cosmic fountain in the galaxy cluster Abell 2597 Multiwavelength study of a cosmic fountain in the galaxy cluster Abell 2597](/Images/objects/heapow/large_scale_structure/abell2597_chandra_small.jpg) |
January 28, 2019 |
Impulse Power |
![Radio, optical and X-ray composite of the galaxy cluster merger Abell Radio, optical and X-ray composite of the galaxy cluster merger Abell 1033](/Images/objects/heapow/large_scale_structure/abell1033_chandra_small.jpg) |
December 10, 2018 |
Measuring the Darkness of Night |
![Fermi LAT 9 year all-sky gamma-ray map Fermi LAT 9 year all-sky gamma-ray map](/Images/objects/heapow/large_scale_structure/starlight_fermi_small.jpg) |
December 3, 2018 |
Building the Universe |
![Group of galaxies falling toward the Abell 2142 galaxy cluster Group of galaxies falling toward the Abell 2142 galaxy cluster](/Images/objects/heapow/large_scale_structure/abell2142_chandra_small.jpg) |
October 15, 2018 |
A New Slant on the First Stars |
![Planck microwave background polarization map Planck microwave background polarization map](/Images/objects/heapow/large_scale_structure/planck_pol_small.jpg) |
May 21, 2018 |
A NICER View of the Whole Sky |
![NICER slew survey NICER slew survey](/Images/objects/heapow/large_scale_structure/nicer_slew_small.jpg) |
March 26, 2018 |
New Dark Matter Model on the Line? |
![Chandra X-ray image of the Perseus Cluster and the central supermassive black hole Chandra X-ray image of the Perseus Cluster and the central supermassive black hole](/Images/objects/heapow/large_scale_structure/dmline_chandra_small.jpg) |
January 8, 2018 |
Making Up Perseus |
![Hitomi spectra of the Perseus intracluster gas Hitomi spectra of the Perseus intracluster gas](/Images/objects/heapow/large_scale_structure/perseus_hitomi_small.jpg) |
December 11, 2017 |
Locating the Web |
![Simulation of the cosmic web Simulation of the cosmic web](/Images/objects/heapow/large_scale_structure/whim_found_small.jpg) |
November 13, 2017 |
Billows in Perseus |
![Enhanced image of X-ray emission in the Perseus cluster Enhanced image of X-ray emission in the Perseus cluster](/Images/objects/heapow/large_scale_structure/perseus_waves_small.jpg) |
May 29, 2017 |
Seen in Passing |
![Map of XMM-Newton slew survey sources in galactic coordinates Map of XMM-Newton slew survey sources in galactic coordinates](/Images/objects/heapow/large_scale_structure/xmmslew2014_small.jpg) |
May 22, 2017 |
Another Form of Dark Matter? |
![Chandra (purple) and optical observations tracing normal and dark matter distributions in galaxy clusters Chandra (purple) and optical observations tracing normal and dark matter distributions in galaxy clusters](/Images/objects/heapow/large_scale_structure/sfdm_chandra_small.jpg) |
May 8, 2017 |
Scientists Working Together |
![March of Progress: X-ray, radio and optical images of Centaurus galaxy cluster March of Progress: X-ray, radio and optical images of Centaurus galaxy cluster](/Images/objects/heapow/large_scale_structure/centaurus_multi_small.jpg) |
April 24, 2017 |
Light from Dark Matter? |
![Mysterious feature seen in X-ray spectrum may arise from dark matter annihilation Mysterious feature seen in X-ray spectrum may arise from dark matter annihilation](/Images/objects/heapow/large_scale_structure/3.5kev_chandra_small.jpg) |
February 13, 2017 |
Crash on the Cosmic Superhighway |
![X-ray, optical and radio composite of the collision of 2 galaxy clusters X-ray, optical and radio composite of the collision of 2 galaxy clusters](/Images/objects/heapow/large_scale_structure/abell3411comp_small.jpg) |
January 16, 2017 |
The Visibility of Darkness |
![Fermi study of the extragalactic Gamma-ray background Fermi study of the extragalactic Gamma-ray background](/Images/objects/heapow/large_scale_structure/fermi_7yr_small.jpg) |
November 14, 2016 |
Relic |
![Composite X-ray, radio, optical and a mass map of the galaxy cluster RX J0603.3+4214 Composite X-ray, radio, optical and a mass map of the galaxy cluster RX J0603.3+4214](/Images/objects/heapow/large_scale_structure/toothbrush_chandra_small.jpg) |
November 7, 2016 |
The Raving |
![Chandra Deep Field South Chandra Deep Field South](/Images/objects/heapow/large_scale_structure/dfs_chandra_small.jpg) |
October 31, 2016 |
The Water Telescope |
![HAWC skymap HAWC skymap](/Images/objects/heapow/large_scale_structure/hawc_skymap_small.jpg) |
September 26, 2016 |
Far and Away |
![Most distant galaxy cluster identified Most distant galaxy cluster identified](/Images/objects/heapow/large_scale_structure/coscluster_chandra_small.jpg) |
September 5, 2016 |
A Map of Motion in Perseus |
![Hitomi observation of the Perseus cluster Hitomi observation of the Perseus cluster](/Images/objects/heapow/large_scale_structure/hitomi_perseus_small.jpg) |
July 11, 2016 |
The Wild Frontier |
![A multi-wavelength false-color view of MACS J0717, one of the galaxy clusters in the Frontier Fields Project A multi-wavelength false-color view of MACS J0717, one of the galaxy clusters in the Frontier Fields Project](/Images/objects/heapow/large_scale_structure/frontierfields_chandra_small.jpg) |
March 21, 2016 |
Schizoid Phoenix |
![Composite X-ray and optical image of the Phoenix cluster of galaxies Composite X-ray and optical image of the Phoenix cluster of galaxies](/Images/objects/heapow/large_scale_structure/phoenix_composite_small.jpg) |
November 2, 2015 |
Mystery Spot |
![Planck's mysterious cold spot Planck's mysterious cold spot](/Images/objects/heapow/large_scale_structure/cold_spot_planck_small.jpg) |
May 4, 2015 |
The Cosmic Web |
![Map of large scale distribution of dark matter Map of large scale distribution of dark matter](/Images/objects/heapow/large_scale_structure/dark_matter_map_small.jpg) |
April 20, 2015 |
Super Colliders |
![Dark and normal matter distributions in colliding galaxies Dark and normal matter distributions in colliding galaxies](/Images/objects/heapow/large_scale_structure/dm_chandra_small.jpg) |
April 6, 2015 |
The Earliest Jewel |
![Chandra X-ray, Subaru and ESO/VLT optical and Herschel IR image of the Gioiello cluster Chandra X-ray, Subaru and ESO/VLT optical and Herschel IR image of the Gioiello cluster](/Images/objects/heapow/large_scale_structure/gioiello_chandra_small.jpg) |
December 22, 2014 |
Keeping Things Hot |
![Chandra observations of turbulence in the Perseus and Virgo galaxy clusters Chandra observations of turbulence in the Perseus and Virgo galaxy clusters](/Images/objects/heapow/large_scale_structure/clusterturbulence_chandra_small.jpg) |
November 3, 2014 |
Dark Matter Bump in the Night? |
![Chandra image and spectrum of the Perseus Cluster Chandra image and spectrum of the Perseus Cluster](/Images/objects/heapow/large_scale_structure/perseus_bump_small.jpg) |
June 30, 2014 |
La Batalla de El Gordo |
![Chandra and Hubble image of El Gordo galaxy cluster Chandra and Hubble image of El Gordo galaxy cluster](/Images/objects/heapow/large_scale_structure/elgordo_chandra_small.jpg) |
May 5, 2014 |
Our Paradoxical Universe |
![A simulated 30 degree diameter map of the CMB polarization superimposed on the CMB temperature anisotropy centered on the South Celestial Pole. The top panel shows the total polarization field due to the sum of the scalar and tensor modes, with T/S - 0.28 A simulated 30 degree diameter map of the CMB polarization superimposed on the CMB temperature anisotropy centered on the South Celestial Pole. The top panel shows the total polarization field due to the sum of the scalar and tensor modes, with T/S - 0.28](/Images/objects/heapow/large_scale_structure/bicep_sim_small.jpg) |
March 17, 2014 |
The Anomalous Universe? | ![Planck all sky cosmic microwave background map highlighting the spatial anomalies Planck all sky cosmic microwave background map highlighting the spatial anomalies](/Images/objects/heapow/large_scale_structure/planck_anomalies_small.jpg) | February 17, 2014 |
New Sources for a New Year | ![new Swift X-ray sources new Swift X-ray sources](/Images/objects/heapow/large_scale_structure/swift_1sxps_small.jpg) | January 6, 2014 |
Iron Chef | ![Suzaku X-ray study of the Perseus Cluster Suzaku X-ray study of the Perseus Cluster](/Images/objects/heapow/large_scale_structure/iron_suzaku_small.jpg) | November 4, 2013 |
Ironing | ![Multiwavelength+X-ray view of NGC 5044 galaxy group Multiwavelength+X-ray view of NGC 5044 galaxy group](/Images/objects/heapow/large_scale_structure/ngc5044_xmm_small.jpg) | October 21, 2013 |
Tresses of Coma | ![Chandra+optical image of the Coma Cluster Chandra+optical image of the Coma Cluster](/Images/objects/heapow/large_scale_structure/coma_chandra_small.jpg) | September 23, 2013 |
Relic | ![Planck's first 15.5 months of all-sky observations](/Images/objects/heapow/large_scale_structure/planck_map_small.jpg) | March 25, 2013 |
A Bridge Too Far | ![Planck Intercluster Bridge](/Images/objects/heapow/large_scale_structure/planck_bridge_small.jpg) | November 26, 2012 |
The Fog of Stellar History | ![Fermi observes the fog of cosmic history](/Images/objects/heapow/large_scale_structure/cosmicfog_fermi_small.jpg) | November 5, 2012 |
The Star Factory | ![Planck (blue) and Fermi (red) all sky images superimposed](/Images/objects/heapow/large_scale_structure/phoenix_chandra_small.jpg) | August 20, 2012 |
Planck meets Fermi | ![Planck (blue) and Fermi (red) all sky images superimposed](/Images/objects/heapow/large_scale_structure/planck_fermi_small.jpg) | February 20, 2012 |
A Deeper Universe | ![LAT 2-year all sky gamma-ray map](/Images/objects/heapow/large_scale_structure/fermi_2yr_small.jpg) | September 12, 2011 |
Searching for the Next Universe | ![The signatures of a bubble collision at various stages in the analysis pipeline.](/Images/objects/heapow/large_scale_structure/multiverse_test_small.jpg) | August 22, 2011 |
Four Way Stop Sign | ![Chandra + optical image of Abell 2744](/Images/objects/heapow/large_scale_structure/abell2744_chandra_small.jpg) | June 27, 2011 |
Dance of the Double Cluster | ![XMM-Newton false color image of cluster Abell 2028](/Images/objects/heapow/large_scale_structure/a2028_xmm_small.jpg) | April 25, 2011 |
The Fringes of Perseus | ![Suzaku study of the Perseus Cluster](/Images/objects/heapow/large_scale_structure/perseus_suzaku_small.jpg) | March 28, 2011 |
Mature for Your Age | ![A Cluster at High Redshift](/Images/objects/heapow/large_scale_structure/hizcluster_xmm_small.jpg) | March 14, 2011 |
Keep Busy | ![XMM Slew survey](/Images/objects/heapow/large_scale_structure/xmm_slew_small.jpg) | December 27, 2010 |
Far Away Cooling | ![Chandra + optical image of the most distant cooling flow](/Images/objects/heapow/large_scale_structure/3c186_chandra_small.jpg) | November 1, 2010 |
The End of How it All Began | ![This image is the detailed, all-sky picture of the infant universe created from seven years of WMAP data. The image reveals 13.7 billion year old temperature fluctuations (shown as color differences) that correspond to the seeds that grew to become the galaxies.](/Images/objects/heapow/large_scale_structure/wmap_small.jpg) | October 11, 2010 |
Deconstructing the Universe | ![Planck and XMM images of a new found supercluster](/Images/objects/heapow/large_scale_structure/planck_xmm_small.jpg) | October 4, 2010 |
Switch on the Radio | ![composite X-ray and radio image of Abell 1758](/Images/objects/heapow/large_scale_structure/abell1758_chandra_small.jpg) | September 6, 2010 |
Missing No More? | ![A Test of the WHIM](/Images/objects/heapow/large_scale_structure/whim_x_small.jpg) | May 17, 2010 |
Passing the Cosmic Test | ![Fermi GR background](/Images/objects/heapow/large_scale_structure/abell3376_chandra_small.jpg) | May 10, 2010 |
Background Check | ![Fermi GR background](/Images/objects/heapow/large_scale_structure/background_fermi_small.jpg) | March 15, 2010 |
Web of Darkness | ![XMM and COSMOS lensing survey](/Images/objects/heapow/large_scale_structure/cosmos_xmm_small.jpg) | February 8, 2010 |
A Tale of Two Tails | ![X-ray and optical image of ESO 137-001](/Images/objects/heapow/large_scale_structure/eso137_chandra_small.jpg) | February 1, 2010 |
The Bones of the Universe | ![XMM-LSS survey image](/Images/objects/heapow/large_scale_structure/xmm_lss2_small.jpg) | January 18, 2010 |
Heavy Metal Mine | ![redshift histogram](/Images/objects/heapow/large_scale_structure/suzaku_elements_small.jpg) | December 7, 2009 |
Do Look Back | ![redshift histogram](/Images/objects/heapow/large_scale_structure/red_history2_small.jpg) | November 30, 2009 |
Light from the Dawn of Time | ![Planck sees the cosmic Microwave radiation](/Images/objects/heapow/large_scale_structure/planck_strip_small.jpg) | September 28, 2009 |
Outskirts | ![Suzaku image of PKS 0745-191 with HST image inset](/Images/objects/heapow/large_scale_structure/pks0745_suzaku_small.jpg) | August 31, 2009 |
Pileup on the Intergalactic Freeway | ![Chandra and HST image of collision of 4 clusters of galaxies](/Images/objects/heapow/large_scale_structure/macs_collision_chandra_small.jpg) | April 27, 2009 |
Our Erratic Universe | ![Fermi Scanning the Sky](/Images/objects/heapow/large_scale_structure/fermi_movie_small.jpg) | April 13, 2009 |
Bright Gamma Sky | ![Release of Fermi/LAT Bright source list](/Images/objects/heapow/large_scale_structure/fermi_bsl_small.jpg) | February 09, 2009 |
Darkness into Light | ![left: Chandra image of cluster of galaxies; right: Simulation of the evolution of the Universe](/Images/objects/heapow/large_scale_structure/darkenergy_chandra_small.jpg) | December 22, 2008 |
Just Passing By | ![XMM-Newton Slew survey](/Images/objects/heapow/large_scale_structure/xmmslew_small.jpg) | September 29, 2008 |
Fasten Your Seatbelts | ![Images of light and dark matter](/Images/objects/heapow/large_scale_structure/macs_chandra_small.jpg) | September 08, 2008 |
All Fermi | ![LAT 4-day all sky survey](/Images/objects/heapow/large_scale_structure/allsky_lat_small.jpg) | September 01, 2008 |
Filigree | ![XMM image bridge between two galaxy clusters](/Images/objects/heapow/large_scale_structure/a2223_xmm_small.jpg) | May 12, 2008 |
XMM View of the COSMOS | ![XMM image of COSMOS field](/Images/objects/heapow/large_scale_structure/cosmos_xmm_small.jpg) | February 11, 2008 |
One Behind the Other | ![XMM image of Abell 3128 and background cluster](/Images/objects/heapow/large_scale_structure/abell3128_xmm_small.jpg) | February 4, 2008 |
The Mystery Machine | ![Happy Halloween from Chandra](/Images/objects/heapow/large_scale_structure/perseus_acis_small.jpg) | October 29, 2007 |
Rushing Downhill | ![Galaxy with Tail](/Images/objects/heapow/large_scale_structure/abell3627_chandra_opt_small.jpg) | September 24, 2007 |
Cataloguing A Piece of the Universe | ![Second XMM serendipitous source catalog](/Images/objects/heapow/large_scale_structure/xmm_ssc_small.jpg) | September 10, 2007 |
Light and Dark Matter | ![X-ray and Gravitational lensing maps of Abell 520 cluster](/Images/objects/heapow/large_scale_structure/abell520_chandra_small.jpg) | August 20, 2007 |
Where's the Matter? | ![INTEGRAL AGN volume density](/Images/objects/heapow/large_scale_structure/agndens_integral_small.jpg) | March 5, 2007 |
Cataloguing the GR Sky | ![INTEGRAL 3rd IBIS catalogue](/Images/objects/heapow/large_scale_structure/3rd_ibis_small.jpg) | February 5, 2007 |
Wondering in a Deep Field | ![XMM-Newton X-ray Deep Field](/Images/objects/heapow/large_scale_structure/sxdf_xmm_small.jpg) | January 29, 2007 |
Speeding Bullet | ![XMM-Newton image of Abell 3376](/Images/objects/heapow/large_scale_structure/a3376_xmm_small.jpg) | November 27, 2006 |
A History of Looking Backward | ![A History of redshift](/Images/objects/heapow/large_scale_structure/red_history_small.jpg) | September 18, 2006 |
Darkness into Light | ![Dark and Normal Matter split](/Images/objects/heapow/large_scale_structure/1e0657_chandra_small.jpg) | August 28, 2006 |
Pull of Gravity | ![XMM-Newton X-ray image of Abell 3266](/Images/objects/heapow/large_scale_structure/a3266_xmm_small.jpg) | August 21, 2006 |
Abundance | ![XMM-Newton X-ray data on cluster abundances](/Images/objects/heapow/large_scale_structure/cluster_z_xmm_small.jpg) | June 12, 2006 |
House of Mirrors | ![Subaru and XMM images of gravitation lens SDSS J1004+4112](/Images/objects/heapow/large_scale_structure/gravlens_subaru_xmm_small.jpg) | May 8, 2006 |
Binary Black Hole Contrails | ![Chandra X-ray and VLA radio image of Abell 400](/Images/objects/heapow/large_scale_structure/abell400_chandra_small.jpg) | April 10, 2006 |
The Medium is a Message | ![XMM-Newton and R-band images of Stephan's Quintet](/Images/objects/heapow/large_scale_structure/sq_xmm_small.jpg) | March 13, 2006 |
Getting Together While Young | ![XMM-Newton and VLT images of XMMU J2235.3-2557](/Images/objects/heapow/large_scale_structure/xmmuj2235_composite_small.jpg) | February 20, 2006 |
Taking Perseus' Temperature | ![Chandra Temperature Map of the Perseus Cluster](/Images/objects/heapow/large_scale_structure/perseus_temp_chandra_small.jpg) | February 6, 2006 |
Peacock's Plumage | ![XMM Newton image of the Pavo group](/Images/objects/heapow/large_scale_structure/pavo_group_xmm_small.jpg) | December 5, 2005 |
The Devil Made Me Do It | ![Chandra Image of the Perseus Cluster](/Images/objects/heapow/large_scale_structure/perseus_acis_small.jpg) | October 31, 2005 |
Dark Matter Map | ![XMM-Newton temperature map of Abell 85](/Images/objects/heapow/large_scale_structure/abell85_xmm_small.jpg) | August 29, 2005 |
Iron Dating | ![Chandra spectra of iron around black holes](/Images/objects/heapow/large_scale_structure/felines_chandra_small.jpg) | August 22, 2005 |
An Isolated Case of Dark Matter | ![Chandra image of a halo around NGC 4555](/Images/objects/heapow/large_scale_structure/ngc4555_chandra_small.jpg) | February 7, 2005 |
Watch Your Cavities | ![Chandra and VLA image of MS 0735.6+7421](/Images/objects/heapow/large_scale_structure/ms0735_chandra_vla_small.jpg) | January 10, 2005 |
The Stripper | ![XMM-Newton image of Abell 1644](/Images/objects/heapow/large_scale_structure/a1644_xmm_small.jpg) | October 4, 2004 |
Free Falling | ![Chandra Image for the Fornax cluster](/Images/objects/heapow/large_scale_structure/fornax_chandra_small.jpg) | September 13, 2004 |
Darkness Visible | ![Chandra images 3 clusters of galaxies](/Images/objects/heapow/large_scale_structure/chandra_dark_small.jpg) | May 24, 2004 |
New Cosmic Survey | ![PCA All Sky Survey](/Images/objects/heapow/large_scale_structure/rxte_ss_small.jpg) | February 9, 2004 |
Ancient Structure | ![CHANDRA and VLT observations of an old, massive cluster](/Images/objects/heapow/large_scale_structure/rdcs1252_chandra_vlt_small.jpg) | January 26, 2004 |
X-ray Panorama | ![SPI Al 26 Map](/Images/objects/heapow/large_scale_structure/xmm_lss_small.jpg) | July 28, 2003 |
Forging Aluminum | ![SPI Al 26 Map](/Images/objects/heapow/large_scale_structure/al26_integral_small.jpg) | July 13, 2003 |
Getting the GOODS on the Universe | ![Chandra Temperature map of the galaxy cluster PKS0745-191](/Images/objects/heapow/large_scale_structure/goods_small.jpg) | June 23, 2003 |
Cool Cluster Core | ![Chandra Temperature map of the galaxy cluster PKS0745-191](/Images/objects/heapow/large_scale_structure/pks0745_chandra_small.jpg) | December 2, 2002 |
The Great Beyond | ![NGC891 X-ray & Optical images](/Images/objects/heapow/large_scale_structure/ngc891_chandra_small.jpg) | August 5, 2002 |
Shooting Star Cluster | ![1E0657-56/Chandra](/Images/objects/heapow/large_scale_structure/1E0657-56_small.jpg) | April 1, 2002 |
Mining Aluminum in the Universe | ![Comptel 1.8 MeV Map](/Images/objects/heapow/large_scale_structure/comptel_al26_small.jpg) | July 23, 2001 |
Youngest X-ray Galaxy Cluster | ![CHANDRA/3C294](/Images/objects/heapow/large_scale_structure/chandra_3c294_small.jpg) | June 25, 2001 |
Encircling the Pole | ![ROSAT/South Ecliptic Pole](/Images/objects/heapow/large_scale_structure/rosat_sep_small.jpg) | April 2, 2001 |
Black Holes in the Deep Field | ![chandra/deep field south](/Images/objects/heapow/large_scale_structure/chandra_dfs_small.jpg) | March 26, 2001 |
Cosmic Cluster Mosaic: Dark Matter Revealed | ![XMM-NEWTON COMA CLUSTER](/Images/objects/heapow/large_scale_structure/xmm_coma_small.jpg) | October 23,2000 |
The Growth of Sensitivity | ![X-ray All Sky Sources](/Images/objects/heapow/large_scale_structure/xray_src_cmp_small.jpg) | October 2, 2000 |
Compact Group Controversy | ![HCG16/XMM](/Images/objects/heapow/large_scale_structure/hcg16_xmm_small.jpg) | September 25, 2000 |
Mysterious Radiant Sources | ![EGRET/ALL SKY MAP](/Images/objects/heapow/large_scale_structure/egret_allsky_map_small.jpg) | August 14, 2000 |
A Hidden Cluster Revealed | ![XMM/New Cluster](/Images/objects/heapow/large_scale_structure/xmm_cluster_small.jpg) | July 3, 2000 |
Silhouettes on the X-ray Sky | ![Draco Shadow](/Images/objects/heapow/large_scale_structure/draco_small.jpg) | May 15, 2000 |
The Extreme Ultraviolet Universe | ![EUVE All sky map](/Images/objects/heapow/large_scale_structure/euve_jbis_map_small.jpg) | Apr 10, 2000 |
X-raying the Universe | ![ROSAT All Sky Survey](/Images/objects/heapow/large_scale_structure/rass_small.jpg) | Mar 27, 2000 |
The Universe at 100 MeV | ![EGRET all sky map](/Images/objects/heapow/large_scale_structure/egret_allsky2a_small.jpg) | Oct 4, 1999 |