K. Iwasawa

1. GOALS-JWST: Gas Dynamics and Excitation in NGC7469 revealed by NIRSpec
   2023/08/01 by Marina Bianchin, U Vivian, Vivian U +96 · 1 voice · 4 citations
   Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Galaxies: Formation, Evolution, Phenomena #astro-ph.GA
2. A Post-Starburst Pathway for the Formation of Massive Galaxies and Black Holes at z>6
   2024/09/11 by Masafusa Onoue, Onoue, Masafusa, Xuheng Ding +93 · 13 citations
   Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences
3. A very deep Chandra observation of the Perseus cluster: shocks, ripples and conduction
   2005/10/31 by A. C. Fabian, J. S. Sanders, G. B. Taylor +4 · 2 citations
   Physics and Astronomy · #astro-ph
4. Variation of the broad X-ray iron line in MCG-6-30-15 during a flare
   1999/04/07 by K. Iwasawa, A. C. Fabian, A. J. Young +2 · 4 citations
   Engineering · Physics and Astronomy · #Astrophysical Phenomena and Observations #Mechanics and Biomechanics Studies #Pulsars and Gravitational Waves Research #astro-ph
5. ASCA and ROSAT observations of NGC 5548: discrepant spectral indices
   1999/04/06 by K. Iwasawa, A. C. Fabian, K. Nandra · 3 citations
   Engineering · Mathematics · Physics and Astronomy · #Calibration and Measurement Techniques #Statistical and numerical algorithms #X-ray Spectroscopy and Fluorescence Analysis #astro-ph
6. Heavy and Complex X‐Ray Absorption toward the Nucleus of Markarian 6
   1998/07/27 by John J. Feldmeier, John Feldmeier, W. N. Brandt +5 · 2 citations
   Physics and Astronomy · #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae #astro-ph
7. On the X-ray, optical emission line and black hole mass properties of local Seyfert galaxies
   2006/05/09 by F. Panessa, L. Bassani, M. Cappi +5 · 1 citation
   Physics and Astronomy · #astro-ph
8. Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). XVIII. The Dark Matter Halo Mass of Quasars at z∼6
   2023/07/05 by Junya Arita, Arita, Junya, Nobunari Kashikawa +23 · 3 citations
   Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Scientific Research and Discoveries
9. Revealing the Dusty Warm Absorber in MCG −6-30-15 with the [ITAL]Chandra[/ITAL] High-Energy Transmission Grating
   2001/01/31 by J. C. Lee, Julia C. Lee, P. M. Ogle +10 · 1 citation
   Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph
10. Do nuclear starbursts obscure the X-ray background?
    1998/03/25 by A. C. Fabian, X. Barcons, O. Almaini +1 · 1 citation
    Physics and Astronomy · #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #astro-ph
11. A big red dot at cosmic noon
    2025/06/13 by Federica Loiacono, F. Loiacono, Loiacono, Federica +62 · 1 voice · 5 citations
    Engineering · Physics and Astronomy · #Photocathodes and Microchannel Plates #GaN-based semiconductor devices and materials
12. The Hot and Energetic Universe: The formation and growth of the earliest supermassive black holes
    2013/06/10 by James Aird, Andrea Comastri, A. Comastri +55 · 1 citation
    Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Relativity and Gravitational Theory #astro-ph.CO #astro-ph.HE
13. TheASCAspectrum of thez = 4.72 blazar GB 1428+4217
    1998/01/28 by A. C. Fabian, K. Iwasawa, A. Celotti +4 · 1 citation
    Engineering · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Particle Accelerators and Free-Electron Lasers #Radio Astronomy Observations and Technology #astro-ph
14. A Chandra observation of the H2O megamaser IC 2560
    2002/09/12 by K. Iwasawa, P. R. Maloney, Philip R. Maloney +1 · 1 citation
    Physics and Astronomy · #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae #astro-ph
15. Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). XVII. Black Hole Mass Distribution at z ∼ 6 Estimated via Spectral Comparison with Low-z Quasars
    2023/10/18 by Ayumi Takahashi, Takahashi, Ayumi, Yoshiki Matsuoka +21 · 3 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
16. SHELLQs. Bridging the Gap: JWST Unveils Obscured Quasars in the Most Luminous Galaxies at z > 6
    2025/05/07 by Yoshiki Matsuoka, Matsuoka, Yoshiki, Masafusa Onoue +37 · 5 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
17. Probing the Disk-jet Connection of the Radio Galaxy 3C120 Observed with Suzaku
    2006/12/28 by Jun Kataoka, J. Kataoka, J. N. Reeves +23 · 1 citation
    Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #astro-ph
18. SHELLQs-JWST Unveils the Host Galaxies of 12 Quasars at z>6
    2025/05/06 by Xuheng Ding, Ding, Xuheng, Masafusa Onoue +71 · 6 citations
    Physics and Astronomy · Engineering · #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research #Space Technology and Applications
19. XMM-Newtonobservations of GB B1428+4217: confirmation of intrinsic soft X-ray absorption
    2004/03/31 by M. A. Worsley, A. C. Fabian, A. Celotti +1 · 1 citation
    Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Earth Systems and Cosmic Evolution #astro-ph
20. Merging gas-rich galaxies that harbor low-luminosity twin quasars at z = 6.05: a promising progenitor of the most luminous quasars
    2024/05/03 by Takuma Izumi, Yoshiki Matsuoka, Izumi, Takuma +33 · 1 citation
    Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Photocathodes and Microchannel Plates