A dataset provided by the European Space Agency

Proposal ID 015266
Title PG 1448+273: The hottest accretion disk among Active Galactic Nuclei
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0152660101

DOI https://doi.org/10.5270/esa-49lnb0e
Principal Investigator, PI Mr Toshihiro Kawaguchi
Abstract The switch from the standard accretion disk to the slim accretion diskhas long been a natural, theoretical consequence of high accretion rate.To test this paradigm, small black-hole mass and high accretion objects are desirable. We therefore propose a 20 ksec XMM-Newton observation of a Narrow-Line Seyfert 1 galaxy extremely suitable to thispurpose, PG 1448+273, to examine and derive constraints on the slim disk model, through detailed modeling of both spectral and temporal behaviors.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-02-08T13:11:03Z/2003-02-08T19:10:32Z
Version 21.51_20241115_1113
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2004-03-25T00:00:00Z
Last Update 2026-07-09
Keywords "pg 1448", "slim disk model", "XMM-Newton", "hottest accretion disk", "slim accretion disk", "accretion rate", "temporal behaviors", "XMM", "accretion objects", "blackhole mass", "xmm newton", "active galactic nuclei", "narrow line seyfert", "standard accretion disk"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Mr Toshihiro Kawaguchi, 2004, 'PG 1448+273: The hottest accretion disk among Active Galactic Nuclei', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-49lnb0e
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.