User Jim421616

1

14

votes

2

answers

1k

views

Quasar mass and accretion rates

quasars accretion-discs

Jul 6 '18 at 4:12 DeltaEnfieldWaid 3,037

11

votes

1

answer

2k

views

A “strange” unit radio astronomy

radio-astronomy units

Mar 5 '19 at 12:06 Mick 1,270

1

6

votes

1

answer

102

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3C273 jet mass estimate

quasars resource-request astronomical-jet estimate synchrotron-radiation

Apr 1 at 7:48 B--rian 4,482

4

votes

1

answer

121

views

Tuning radio telescopes

radio-astronomy redshift radio-telescope hydrogen

May 12 at 10:23 B--rian 4,482

3

votes

1

answer

64

views

An image for the unified model of AGN

active-galaxy resource-request

Apr 16 at 8:35 B--rian 4,482

3

votes

0

answers

86

views

Number of obscured AGN compared to unobscured AGN

galaxy quasars active-galaxy

Apr 15 at 14:17 B--rian 4,482

2

votes

0

answers

77

views

Luminosity of the Milky Way compared to Seyfert galaxies

galaxy milky-way luminosity seyfert-galaxy

Apr 15 at 10:53 B--rian 4,482

2

votes

0

answers

37

views

Cross-matching astronomical catalogs

observational-astronomy star-catalogues

Jan 20 at 0:53 uhoh 28.3k

2

votes

0

answers

69

views

Correction to inverse square law for cosmology

cosmology spectroscopy quasars

Feb 1 '19 at 2:04 Jim421616 1,196

2

votes

1

answer

98

views

Units of integrated flux density (irradiance) along longitudes

fundamental-astronomy units

Nov 10 '17 at 22:52 eshaya 2,658

2

votes

2

answers

843

views

Practicing image processing and analysis

data-analysis photography

Aug 11 '17 at 14:26 zephyr 12.9k

1

vote

1

answer

43

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Photometry systems

photometry

Jul 18 '19 at 2:31 Community♦ 1

1

vote

1

answer

27

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Comparing info for WISE and GALEX

telescope space-telescope magnitude wavelength

Jul 15 '19 at 9:02 Peter Erwin 11.1k

1

vote

1

answer

56

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Regions and size of an AGN

quasars active-galaxy

Jul 8 '19 at 2:31 astrosnapper 6,367

1

vote

1

answer

197

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Exposure time for spectroscopy compared to photometry

observational-astronomy spectroscopy photometry

Jun 13 '19 at 6:45 ProfRob 97.2k

1

vote

0

answers

40

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Causes of emission of accretion disk

black-hole quasars accretion-discs

Jun 12 '19 at 3:03 Jim421616 1,196

1

vote

0

answers

26

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Anisotropy of quasar distribution

quasars resource-request

Apr 8 '19 at 22:28 Jim421616 1,196

1

vote

0

answers

37

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Relationship between photometric colour and redshift, part two

redshift photometry

Mar 28 '19 at 0:04 Jim421616 1,196

1

vote

1

answer

71

views

Relationship between photometric colour and redshift

redshift photometry

Mar 27 '19 at 23:44 ProfRob 97.2k

1

vote

0

answers

58

views

Regression line in a colour-colour diagram

photometry magnitude

Sep 25 '18 at 22:30 Jim421616 1,196

1

vote

3

answers

139

views

Ratios of magnitudes instead of differences

star observational-astronomy magnitude

Aug 17 '18 at 11:14 ProfRob 97.2k

1

vote

2

answers

78

views

Can I take logarithms of magnitudes (which are already log) [closed]

redshift quasars magnitude

Aug 16 '18 at 13:28 Kornpob Bhirombhakdi 1,355

1

vote

2

answers

103

views

Wavelengths for observed objects — emitted or observed?

redshift wavelength

Aug 7 '18 at 8:25 Community♦ 1

1

vote

2

answers

260

views

Problems with FITS headers

data-analysis python fits-header

Sep 25 '17 at 9:38 Community♦ 1

0

votes

1

answer

52

views

Why is NEOWISE used for galactic observation?

space-telescope

Oct 25 '17 at 19:07 eshaya 2,658

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25 Questions

Quasar mass and accretion rates

A “strange” unit radio astronomy

3C273 jet mass estimate

Tuning radio telescopes

An image for the unified model of AGN

Number of obscured AGN compared to unobscured AGN

Luminosity of the Milky Way compared to Seyfert galaxies

Cross-matching astronomical catalogs

Correction to inverse square law for cosmology

Units of integrated flux density (irradiance) along longitudes

Practicing image processing and analysis

Photometry systems

Comparing info for WISE and GALEX

Regions and size of an AGN

Exposure time for spectroscopy compared to photometry

Causes of emission of accretion disk

Anisotropy of quasar distribution

Relationship between photometric colour and redshift, part two

Relationship between photometric colour and redshift

Regression line in a colour-colour diagram

Ratios of magnitudes instead of differences

Can I take logarithms of magnitudes (which are already log) [closed]

Wavelengths for observed objects — emitted or observed?

Problems with FITS headers

Why is NEOWISE used for galactic observation?