Dust scattered radiation in the galactic poles

被引：1

作者：

Murthy, Jayant ^{[1
]}

Henry, R. C. ^{[2
]}

Overduin, James ^{[3
]}

机构：

[1] Indian Inst Astrophys, Bengaluru 560034, India

[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[3] Towson Univ, Dept Phys Astron & Geosci, Towson, MD 21252 USA

来源：

JOURNAL OF ASTROPHYSICS AND ASTRONOMY | 2023年 / 44卷 / 02期

关键词：

Ultraviolet: ISM; diffuse radiation; FAR-ULTRAVIOLET; BACKGROUND-RADIATION; INTERSTELLAR DUST; DIFFUSE-RADIATION; PHASE FUNCTION; NUMBER COUNTS; UV; EXTINCTION; EMISSION; POLARIZATION;

D O I：

10.1007/s12036-023-09973-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have modeled the diffuse background at the Galactic Poles in the far-ultraviolet (FUV: 1536 & Aring;) and the near-ultraviolet (NUV: 2316 & Aring;). The background is well-fit using a single-scattering dust model with an offset representing the extragalactic light plus any other contribution to the diffuse background. We have found a dust albedo of 0.35-0.40 (FUV) and 0.11-0.19 in the NGP (b > 70 degrees) and 0.46-0.56 (FUV) and 0.31-0.33 (NUV) in the SGP (b < 70<degrees>). The differences in the albedo may reflect changes in the dust-to-gas ratio over the sky or in the dust distribution. We find offsets at zero-reddening of 273-286 and 553-581 photons cm(-2 )s(-1) sr(-1) & Aring;(-1) in the FUV and NUV, respectively, in the NGP with similar values in the SGP.

引用

页数：5

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