2021ApJ...914..106A

Query : 2021ApJ...914..106A

2021ApJ...914..106A - Astrophys. J., 914, 106-106 (2021/June-3)

Probing the sea of cosmic rays by measuring gamma-ray emission from passive giant molecular clouds with HAWC.

ALBERT A., ALFARO R., ALVAREZ C., ANGELES CAMACHO J.R., ARTEAGA-VELAZQUEZ J.C., ARUNBABU K.P., AVILA ROJAS D., AYALA SOLARES H.A., BAGHMANYAN V., BELMONT-MORENO E., BENZVI S.Y., BRISBOIS C., CABALLERO-MORA K.S., CAPISTRAN T., CARRAMINANA A., CASANOVA S., COTTI U., COTZOMI J., COUTINO DE LEON S., DE LA FUENTE E., DIAZ HERNANDEZ R., DINGUS B.L., DUVERNOIS M.A., DUROCHER M., DIAZ-VELEZ J.C., ELLSWORTH R.W., ENGEL K., ESPINOZA C., FAN K.L., FERNANDEZ ALONSO M., FRAIJA N., GALVAN-GAMEZ A., GARCIA D., GARCIA-GONZALEZ J.A., GARFIAS F., GONZALEZ M.M., GOODMAN J.A., HARDING J.P., HERNANDEZ S., HONA B., HUANG D., HUEYOTL-ZAHUANTITLA F., HUNTEMEYER P., IRIARTE A., JOSHI V., KIEDA D., LARA A., LEE W.H., LEE J., LEON VARGAS H., LINNEMANN J.T., LONGINOTTI A.L., LUIS-RAYA G., LUNDEEN J., MALONE K., MARTINEZ O., MARTINEZ-CASTRO J., MATTHEWS J.A., MIRANDA-ROMAGNOLI P., MORALES-SOTO J.A., MORENO E., MOSTAFA M., NAYERHODA A., NELLEN L., NEWBOLD M., NISA M.U., NORIEGA-PAPAQUI R., OMODEI N., PEISKER A., PEREZ ARAUJO Y., PEREZ-PEREZ E.G., RHO C.D., ROSA-GONZALEZ D., RUIZ-VELASCO E., SALESA GREUS F., SANDOVAL A., SCHNEIDER M., SERNA-FRANCO J., SMITH A.J., SPRINGER R.W., SURAJBALI P., TANNER M., TOLLEFSON K., TORRES I., TORRES-ESCOBEDO R., TURNER R., URENA-MENA F., VILLASENOR L., WEISGARBER T., WILLOX E., ZHOU H. and DE LEON C.

Abstract (from CDS):

The study of high-energy gamma rays from passive giant molecular clouds (GMCs) in our Galaxy is an indirect way to characterize and probe the paradigm of the "sea" of cosmic rays in distant parts of the Galaxy. By using data from the High Altitude Water Cerenkov (HAWC) Observatory, we measure the gamma-ray flux above 1 TeV of a set of these clouds to test the paradigm. We selected high galactic latitude clouds that are in HAWC's field of view and that are within 1 kpc distance from the Sun. We find no significant excess emission in the cloud regions, nor when we perform a stacked log-likelihood analysis of GMCs. Using a Bayesian approach, we calculate 95% credible interval upper limits of the gamma-ray flux and estimate limits on the cosmic-ray energy density of these regions. These are the first limits to constrain gamma-ray emission in the multi-TeV energy range (>1 TeV) using passive high galactic latitude GMCs. Assuming that the main gamma-ray production mechanism is due to proton-proton interaction, the upper limits are consistent with a cosmic-ray flux and energy density similar to that measured at Earth.

Journal keyword(s): Galactic cosmic rays - Gamma-rays - High energy astrophysics

CDS comments: The Radcliffe Wave is not in SIMBAD.

Simbad objects: 16

Full paper

View the references in ADS

Number of rows : 16

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2026	#notes
1	NAME Polaris Cirrus Cloud	MoC	01 52 29.6	+87 40 31					~	80	0
2	NAME Perseus Cloud	SFR	03 35.0	+31 13					~	1553	0
3	NAME Taurus Complex	SFR	04 41.0	+25 52					~	4971	0
4	M 42	HII	05 35 16.8	-05 23 15					~	4411	0
5	NAME Mon R 2 GMC	MoC	06 07.6	-06 23					~	27	1
6	NAME Chamaeleon Region	SFR	11 55	-78.0					~	887	0
7	M 83	SBG	13 37 00.91920	-29 51 56.7400	8.85	8.11	7.52	7.21	~	2778	2
8	NAME Ophiuchus Molecular Cloud	SFR	16 28 06	-24 32.5					~	3969	1
9	NAME Her Region	reg	17 21	+50.0					~	42	0
10	NAME Aql Region	reg	18 31.1	-02 10					~	456	0
11	NAME Aql Rift	DNe	18 32	-01.0					~	355	1
12	NAME Hercules Cloud	MoC	18 40	+14.3					~	13	0
13	NAME Corona Australis Cloud	MoC	19 01 51	-36 58.9					~	554	0
14	NAME Cepheus Cloud	SFR	22 00.0	+76 30					~	165	0
15	NAME Local Arm	reg	~	~					~	649	0
16	NAME Gould Belt	PoG	~	~					~	956	1

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