GISMO: Many years of observations at the IRAM 30m...

GISMO:

Many years of observations at the

IRAM 30m telescope, and lessons

learned for the design of GISMO-2

Johannes Staguhn Johns Hopkins University & NASA's GSFC

LTD-16, Grenoble, July 23, 2015

Rick Arendt1, Dominic Benford1, Eli Dwek1, Dale Fixsen1, Gene Hilton2, Kent Irwin2,Christine Jhabvala1, Alexander Karim5,

Attila Kovacs3, Samuel Leclercq4, Stephen Maher1, Tim Miller1, S. Harvey Moseley1, Eva Schinnerer6, Elmer Sharp1,

Ting Su7, Fabian Walter6, Edward Wollack1

1NASA's GSFC, 2NIST/Boulder,

3University of Minnesota/Caltech, 4IRAM, Grenoble

5Cardiff & University of U . of Bonn6MPIA Heidelberg

7JHU

GISMO Team


The Goddard-IRAM Superconducting 2-Millimeter Observer (GISMO)

Backshort

under Grid

(BUG)

TES detector

array

GISMO Deep Field

(GDF)

Staguhn et al. 2014, ApJ,

790,77

PI J. Staguhn


Galactic Center: red: GISMO 2mm, green: SCUBA 850mm, blue: SCUBA 450 mm

A few Scientific Highlights

SFB Colloquium, Köln, July 13, 2015

Observations of Dust Emission in nearbyGalaxies: NGC4631

PI: Marcus Albrecht

SFB Colloquium, Köln, July 13, 2015

Galactic Center @ 2mm

t_int (including pointing measurments): 6.5 hours

NEFD ~ 9 mJy rt(s)

noise in map: 2 - 2.5 mJy

dynamic range >1000 LTD-16, Grenoble, July 23, 2015

red: VLA 20cm, green: GISMO 2mm, blue: Laboca 850 mm

(F.Yusef-Zadeh) (F. Schuller)

Galactic Center Composite

Sgr B Sgr A Sgr C


red: VLA 20cm, green: GISMO 2mm, blue: Laboca 850 mm

(F.Yusef-Zadeh) (F. Schuller)

Galactic Center Composite


GISMO detection of z = 6.3 sub-mm galaxy HFLS3

Riechers et al., 2013, Nature, 496, 329LTD-16, Grenoble, July 23, 2015

GISMO Deep Field: Going Even Deeper

•tint : 69 hrs

•Signal map:

~ 110 mJy rms

Jackknifed map:

~ 75 mJy rms (!)

Confusion noise:

~ 80 mJy rms

7’ 7’GDF GDF - jackknifed


GISMO Deep Field

(GDF) with 39 hours:

Staguhn et al. 2014, ApJ,

790,77

COSMOS

tint ~ 100 hrs

210 mJy rms

Karim+ in prep. LTD-16, Grenoble, July 23, 2015

First SZ Results from GISMO: Planck G147.3-16.6 (z = 0.645)

Upper Left: GISMO deconvolved map

(16.9 ksec; 4.7 hours).

Upper Right: XMM observations (58

ksec total), with radio halo from van

Weeren et al. 2014 overlaid.

Lower Left: Noise in the GISMO map;

central RMS < 0.4 mJy/bm.

Lower Right: S/N map with XMM

contours overlaid.

Mroczkowski et al. 2015, ApJ, 808L, 6

Also see the press release:

http://www.iram-

institute.org/EN/news/2015/105.html


http://www.iram-institute.org/EN/news/2015/105.html

Goddard-Iram Superconducting Millimeter Observer (GISMO)


Goddard-Iram Superconducting Millimeter Observer (GISMO)

• Telescope: IRAM 30m

• 128 pixels, 0.9 l/D, 4’x 2’ FOV

•Angular resolution ~ 17”

• Blind flux calibration ~ 7%

•NEFD ~ 15-20 mJy rt(s)LTD-16, Grenoble, July 23, 2015

Improvement # 1: Straylight Suppression


GISMO: Many years of observations at the IRAM 30m...

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